Wireless communication to optical fiber communication conversion system and method supporting multiple communication protocols

Abstract

The invention belongs to the technical field of wireless communication networks, and discloses a wireless communication to optical fiber communication conversion system and method supporting multiple communication protocols. Comprising the following steps: receiving an original wireless communication signal sent by a sending end through a self-adaptive multi-band antenna array, and recording the original wireless communication signal as an initial wireless communication signal; performing noise suppression on the initial wireless communication signal through an adaptive filter to obtain a denoised wireless communication signal, and demodulating the denoised wireless communication signal through an intelligent demodulator to obtain a wireless communication baseband signal; encrypting the wireless communication baseband signal to obtain an encrypted wireless communication baseband signal; converting the encrypted wireless communication baseband signal into a wired communication optical signal through a photoelectric converter, modulating the wired communication optical signal to obtain a modulated communication optical signal, and transmitting the modulated communication optical signal through an optical fiber; and the security and the transmission rate in the transmission process are further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless communication networks, and more specifically, to a wireless communication to optical fiber communication system and method supporting multiple communication protocols. Background Art

[0002] The patent application with the publication number CN112260768A discloses an electro-optical hybrid underwater communication method, system and storage medium based on optical fiber extension, which integrates the functions of optical fiber communication module and radio communication module, realizes high-speed, networked and long-distance data transmission through optical fiber communication module, realizes radio communication by using radio communication module deployed in submarine optical cable communication node, and realizes long-distance communication between underwater mobile platform node and another platform whose distance exceeds the radio attenuation radius through electro-optical signal conversion. The present invention increases the transmission distance of underwater radio communication by optical fiber extension, expands the coverage of optical fiber communication by radio signal, and opens the electrical and optical communication link by flexible switching of multi-physical field signals, providing an important reference for constructing an underwater communication network with long transmission distance, wide coverage and cross-medium transmission.

[0003] However, in the process of receiving wireless communication signals, the traditional method receives through an antenna, which may cause the signal strength of the received wireless communication signal to be weak, thereby making the signal strength of the converted optical signal weak, and further causing the signal strength of the optical signal transmitted through the optical fiber to be weak, resulting in a decrease in the signal-to-noise ratio at the receiving end, an increase in the bit error rate and signal attenuation. The traditional method encrypts the wireless communication baseband signal through a specific encryption algorithm, making the encrypted wireless communication baseband signal easier to crack, thereby reducing the security of the signal during transmission and causing data leakage.

[0004] In view of this, the present invention proposes a wireless communication to optical fiber communication system and method supporting multiple communication protocols to solve the above problems. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art and to achieve the above-mentioned purpose, the present invention provides the following technical solution: a wireless communication to optical fiber communication system supporting multiple communication protocols, comprising: A wireless signal receiving module, used to receive the original wireless communication signal sent by the transmitting end through the adaptive multi-band antenna array, and record the original wireless communication signal received by the adaptive multi-band antenna array as the initial wireless communication signal; A wireless signal processing module is used to suppress noise on an initial wireless communication signal through an adaptive filter to obtain a denoised wireless communication signal, and to demodulate the denoised wireless communication signal through an intelligent demodulator to obtain a wireless communication baseband signal; Baseband signal encryption module, used to divide wireless communication baseband signals into wireless communication baseband sub-signals, obtaining a starting key by a random value generation formula, converting the starting key into a starting key matrix, processing the starting key matrix by an exclusive OR operation and an exclusive OR operation method according to the wireless communication baseband sub-signals, obtaining a wireless key matrix, encrypting the wireless communication baseband sub-signals by the wireless key matrix, obtaining an encrypted wireless communication baseband sub-signal, and merging the encrypted wireless communication baseband sub-signals to obtain an encrypted wireless communication baseband signal; The conversion and transmission module is used to convert the encrypted wireless communication baseband signal into a wired communication optical signal through an optoelectronic converter, modulate the wired communication optical signal to obtain a modulated communication optical signal, and transmit the modulated communication optical signal through an optical fiber.

[0006] Furthermore, the method for receiving an original wireless communication signal sent by a transmitter through an adaptive multi-band antenna array includes: The full frequency band of the original wireless communication signal is scanned by an ultra-wideband receiver to obtain the frequency response of the original wireless communication signal: ; in, is the number of subbands of the original wireless communication signal, is the index of the number of subbands, is the first The frequency response of each sub-band is is the base of natural logarithms, is the frequency, is an imaginary unit, is the first The time delay of each sub-band; The frequency domain form of the initial wireless communication signal is obtained according to the frequency domain form of the original wireless communication signal and the frequency response of the original wireless communication signal ; in, ; is the frequency domain form of the original wireless communication signal; Perform inverse Fourier transform on the frequency domain form of the initial wireless communication signal to obtain the initial wireless communication signal ; in, ; represents discrete time points, Express Perform an inverse Fourier transform, is the first The frequency response of each sub-band is obtained by inverse Fourier transform. ; Express Perform an inverse Fourier transform, represents the convolution operation, is the original wireless communication signal, Indicates that the original wireless communication signal is shifted to the right , is the translation amount; Calculate the power spectral density of the initial wireless communication signal ; in, ; is the number of discrete time points; Get the power spectrum density of the initial wireless communication signal Maximum The value of is recorded as the frequency of the initial wireless communication signal ; The adaptive multi-band antenna array comprises antenna elements, calculate the resonant frequency of each antenna element ; in, ; is the index of the antenna element, For the The resonant frequency of each antenna element, For the The inductance of each antenna element, For the The capacitance of each antenna element; The inductance of the antenna unit is adjusted so that ; The first The inductance of each antenna element is adjusted to ; in, ; The initial wireless communication signal is received by the antenna unit after inductance adjustment, the power of the initial wireless communication signal received by each antenna unit is obtained, and the initial wireless communication signal with the maximum power is used as the initial wireless communication signal received by the adaptive multi-band antenna array.

[0007] Furthermore, the method of suppressing noise on the initial wireless communication signal by using an adaptive filter to obtain a denoised wireless communication signal includes: The structure of the adaptive filter is expressed as: ; in, is the output signal of the adaptive filter, is the order of the adaptive filter, is the index of the order of the adaptive filter, are different time delay terms of the initial wireless communication signal, Indicates the initial wireless communication signal Delay in time, for Adjustable weight coefficient of The adjustable weight coefficient is updated by the LMS algorithm, and the updated adjustable weight coefficient is input into the adaptive filter, and the adaptive filter is output to obtain a denoised wireless communication signal.

[0008] Furthermore, the method of demodulating the denoised wireless communication signal by an intelligent demodulator to obtain a wireless communication baseband signal includes: The intelligent demodulator is provided with demodulation methods corresponding to s_m modulation modes, the modulation mode corresponding to the denoised wireless communication signal is obtained, the denoised wireless communication signal and the modulation mode corresponding to the denoised wireless communication signal are input into the intelligent demodulator, and the intelligent demodulator uses the corresponding demodulation method according to the modulation mode corresponding to the denoised wireless communication signal to demodulate the denoised wireless communication signal, and obtains the wireless communication baseband signal ,The wireless communication baseband signal is represented in binary form; in, is the index of the channel, For the A wireless communication baseband signal of a channel.

[0009] Furthermore, the wireless communication baseband signal is divided into A method for wirelessly communicating a baseband sub-signal includes: Obtain the length of the wireless communication baseband signal, divide the length of the wireless communication baseband signal by the length of the wireless communication baseband sub-signal to obtain a division result, and determine whether to fill the wireless communication baseband signal according to the division result. If the division result is an integer, the wireless communication baseband signal is not filled; if the division result is not an integer, the wireless communication baseband signal is filled; Every The wireless communication baseband signal is divided once, and the A wireless communication baseband sub-signal, is the length of the wireless communication baseband sub-signal.

[0010] Furthermore, the method for filling a wireless communication baseband signal includes: Obtain the remainder of the length of the wireless communication baseband signal divided by the length of the wireless communication baseband sub-signal, and subtract the remainder of the length of the wireless communication baseband signal divided by the length of the wireless communication baseband sub-signal from the length of the wireless communication baseband sub-signal to obtain a subtraction result. ; Add at the end of the wireless communication baseband signal Binary .

[0011] Further, the method of obtaining a starting key by a random value generation formula, converting the starting key into a starting key matrix, processing the starting key matrix by an exclusive-OR operation and an exclusive-OR operation method according to the wireless communication baseband sub-signal, obtaining a wireless key matrix, encrypting the wireless communication baseband sub-signal by the wireless key matrix, and obtaining the encrypted wireless communication baseband sub-signal includes: Generated by random value generation formula Random values, the random value generation formula is: ; in, The random value generated by the random value generation formula, is a randomly changing value and ; Indicates a random generation of arrive Floating value between; Set the random value threshold. When the random value is greater than or equal to the random value threshold, replace the random value with , when the random value is less than the random value threshold, replace the random value with , collect all replaced random values ​​to obtain the starting key; Convert the starting key into a starting key matrix, including: Build The empty matrix, ;and , the beginning of the key The binary map of the starting key is mapped to the first row of the empty matrix. to The binary map of the starting key is mapped to the second row of the empty matrix. to The binary bit is mapped to the third row of the empty matrix, ..., the first to The binary mapping of the bit to the empty matrix In the row, obtain the starting key matrix; Convert the first three binary bits of the wireless communication baseband signal to decimal , convert the last three binary digits of the wireless communication baseband sub-signal into decimal ; The first Row and The rows are XORed and XORed, and the first The binary in the row is deleted and the result of the XOR operation is filled into the first The first row of the starting key matrix The binary in the row is deleted, and the result of the exclusive OR operation is filled into the first row, obtaining a wireless key matrix corresponding to the wireless communication baseband sub-signal; Converting a wireless communication baseband sub-signal into a wireless communication baseband sub-signal matrix based on a process of converting a starting key into a starting key matrix; Obtaining the time when the wireless communication baseband signal segmentation is completed, and performing an XOR operation on the binary in the corresponding wireless key matrix and the binary in the wireless communication baseband sub-signal matrix according to the time when the wireless communication baseband signal segmentation is completed, to obtain the encrypted wireless communication baseband sub-signal matrix; The binary in the first row of the encrypted wireless communication baseband sub-signal matrix is ​​used as the front of the encrypted wireless communication baseband sub-signal. The binary in the second row of the encrypted wireless communication baseband sub-signal matrix is ​​used as the first bit of the encrypted wireless communication baseband sub-signal. to bit binary, ..., and so on, the encrypted wireless communication baseband sub-signal matrix The binary in the row is used as the encrypted wireless communication baseband sub-signal. to Bit binary, to obtain the encrypted wireless communication baseband signal.

[0012] Furthermore, the method of converting the encrypted wireless communication baseband signal into a wired communication optical signal by means of an optical-to-electrical converter includes: The encrypted wireless communication baseband signal is input into the photoelectric converter, which converts the input encrypted wireless communication baseband signal to obtain a wired communication optical signal. ; in, ; is the conversion gain factor, which is determined by the characteristics of the photoelectric converter. For the Channels of wired communication optical signals, For the The encrypted wireless communication baseband signal of each channel.

[0013] Furthermore, the method of modulating the wired communication optical signal to obtain a modulated communication optical signal and transmitting the modulated communication optical signal through an optical fiber includes: Each channel is provided with a corresponding modulated optical carrier signal, and the wired communication optical signal is modulated according to the modulated optical carrier signal to obtain a modulated communication optical signal ; in, ; For the The amplitude of the modulated optical carrier signal of each channel, For the The modulated communication optical signal of each channel is For the The frequency of the modulated optical carrier signal of each channel; The modulated communication optical signal of each channel is transmitted simultaneously through the optical fiber.

[0014] A wireless communication to optical fiber communication method supporting multiple communication protocols, comprising: Step S1: receiving an original wireless communication signal sent by a transmitting end through an adaptive multi-band antenna array, and recording the original wireless communication signal received by the adaptive multi-band antenna array as an initial wireless communication signal; Step S2: performing noise suppression on the initial wireless communication signal through an adaptive filter to obtain a denoised wireless communication signal, and demodulating the denoised wireless communication signal through an intelligent demodulator to obtain a wireless communication baseband signal; Step S3: dividing the wireless communication baseband signal into wireless communication baseband sub-signals, encrypting the wireless communication baseband sub-signals by using a wireless key matrix to obtain encrypted wireless communication baseband sub-signals, and merging the encrypted wireless communication baseband sub-signals to obtain an encrypted wireless communication baseband signal; Step S4: convert the encrypted wireless communication baseband signal into a wired communication optical signal through an optoelectronic converter, modulate the wired communication optical signal to obtain a modulated communication optical signal, and transmit the modulated communication optical signal through an optical fiber.

[0015] The technical effects and advantages of a wireless communication to optical fiber communication system and method supporting multiple communication protocols of the present invention are as follows: 1. The original wireless communication signal sent by the transmitter is received by the adaptive multi-band antenna array. The original wireless communication signal sent by the transmitter is received by multiple antennas together. Each antenna has different characteristics and different receiving effects. The initial wireless communication signal with the largest power is selected as the initial wireless communication signal received by the adaptive multi-band antenna array, so that the signal strength of the received initial wireless communication signal is stronger, so that the signal strength of the optical signal transmitted through the optical fiber is stronger, so that the signal-to-noise ratio of the receiving end is increased, the bit error rate is reduced, and the quality of the signal received by the receiving end is improved; 2. The wireless communication baseband sub-signal is encrypted through the wireless key matrix. The acquisition of the wireless key matrix is ​​related to the wireless communication baseband sub-signal itself, and the wireless communication baseband sub-signal is encrypted through the wireless key matrix according to the time when the wireless communication baseband signal segmentation ends, breaking the specificity of the encryption algorithm. The acquisition process of the wireless key matrix has a basis, and the encryption process also has a basis, thereby improving the security of the signal transmission process and ensuring that the data will not be leaked during the transmission process; 3. Modulate the wired communication optical signal to obtain a modulated communication optical signal, transmit the modulated communication optical signal through the optical fiber, and transmit multiple optical signals simultaneously on the same optical fiber, thereby increasing the transmission speed and improving the transmission efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of a wireless communication to optical fiber communication system supporting multiple communication protocols according to the present invention; Figure 2 A schematic diagram of a wireless communication to optical fiber communication method supporting multiple communication protocols according to the present invention; Figure 3 It is a schematic diagram of a method for dividing wireless communication baseband sub-signals according to the present invention. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Example 1 See also Figure 1 and Figure 3 As shown, the wireless communication to optical fiber communication system supporting multiple communication protocols described in this embodiment includes: A wireless signal receiving module, used to receive the original wireless communication signal sent by the transmitting end through the adaptive multi-band antenna array, and record the original wireless communication signal received by the adaptive multi-band antenna array as the initial wireless communication signal; A wireless signal processing module is used to suppress noise on an initial wireless communication signal through an adaptive filter to obtain a denoised wireless communication signal, and to demodulate the denoised wireless communication signal through an intelligent demodulator to obtain a wireless communication baseband signal; Baseband signal encryption module, used to divide wireless communication baseband signals into wireless communication baseband sub-signals, obtaining a starting key by a random value generation formula, converting the starting key into a starting key matrix, processing the starting key matrix by an exclusive OR operation and an exclusive OR operation method according to the wireless communication baseband sub-signals, obtaining a wireless key matrix, encrypting the wireless communication baseband sub-signals by the wireless key matrix, obtaining an encrypted wireless communication baseband sub-signal, and merging the encrypted wireless communication baseband sub-signals to obtain an encrypted wireless communication baseband signal; The conversion and transmission module is used to convert the encrypted wireless communication baseband signal into a wired communication optical signal through an optoelectronic converter, modulate the wired communication optical signal to obtain a modulated communication optical signal, and transmit the modulated communication optical signal through an optical fiber.

[0019] Since different wireless protocols operate in different frequency ranges (e.g. Wi-Fi: 2.4GHz / 5GHz, 5G: 700MHz-52GHz, LoRa: 433MHz / 868MHz / 915MHz, etc.), in order to receive initial wireless communication signals in different frequency ranges, multiple different antennas are required to receive initial wireless communication signals in different frequency ranges. Multiple different antennas form an adaptive multi-band antenna array. The process of receiving the original wireless communication signal sent by the transmitter through the adaptive multi-band antenna array includes: The full frequency band of the original wireless communication signal is scanned by an ultra-wideband receiver to obtain the frequency response of the original wireless communication signal: ; in, is the number of subbands of the original wireless communication signal, is the index of the number of subbands, is the first The frequency response of each sub-band is is the base of natural logarithms, is the frequency, is an imaginary unit, is the first The time delay of each sub-band; It should be explained that the sub-band of the original wireless communication signal refers to dividing the original wireless communication signal into several frequency bands in the frequency domain, each frequency band is called a sub-band. Since the propagation speed of the original wireless communication signal in different frequency sub-bands is different, the propagation time of each sub-band is different, and the propagation time of the sub-band is the time delay of the sub-band; It should be noted that the original wireless communication signal sent by the transmitter will change (such as gain, phase shift, etc.) during the propagation process. The frequency response of the original wireless communication signal represents the change of the original wireless communication signal during the propagation process. Therefore, the original wireless communication signal received by the adaptive multi-band antenna array is different from the original wireless communication signal sent by the transmitter. Therefore, the original wireless communication signal received by the adaptive multi-band antenna array is recorded as the initial wireless communication signal. The initial wireless communication signal is obtained according to the original wireless communication signal and the frequency response of the original wireless communication signal, specifically including: The frequency domain form of the initial wireless communication signal is obtained according to the frequency domain form of the original wireless communication signal and the frequency response of the original wireless communication signal ; in, ; is the frequency domain form of the original wireless communication signal, obtained by performing Fourier transform on the original wireless communication signal; Perform inverse Fourier transform on the frequency domain form of the initial wireless communication signal to obtain the initial wireless communication signal ; in, ; represents discrete time points, Express Perform an inverse Fourier transform, Express Perform an inverse Fourier transform, is the first The frequency response of each sub-band is obtained by inverse Fourier transform. ; Express Perform an inverse Fourier transform, represents the convolution operation, is the original wireless communication signal, Indicates that the original wireless communication signal is shifted to the right , is the translation amount; Calculate the power spectral density of the initial wireless communication signal ; in, ; is the number of discrete time points, representing the discrete time range of the initial wireless communication signal; The frequency of the initial wireless communication signal is obtained according to the power spectrum density of the initial wireless communication signal. , including: Get the power spectrum density of the initial wireless communication signal Maximum The value of the initial wireless communication signal power spectrum density Maximum The value of is recorded as the frequency of the initial wireless communication signal ; The adaptive multi-band antenna array comprises antenna elements, calculate the resonant frequency of each antenna element ; in, ; is the index of the antenna element, For the The resonant frequency of each antenna element, For the The inductance of each antenna element, For the The capacitance of each antenna element; In order to ensure that the antenna unit can effectively receive the initial wireless communication signal, the inductance of the antenna unit is adjusted so that ; The first The inductance of each antenna unit is adjusted to ; in, ; receiving the initial wireless communication signal through the antenna unit after inductance adjustment, obtaining the power of the initial wireless communication signal received by each antenna unit, and using the initial wireless communication signal with the largest power as the initial wireless communication signal received by the adaptive multi-band antenna array; It needs to be explained that the prior art receives wireless communication signals through one antenna, and different antennas have different characteristics, and different antennas have different receiving effects. Receiving wireless communication signals through only one antenna will cause the signal strength of the received wireless communication signal to be weak, thereby making the signal strength of the converted optical signal weak, and further causing the signal strength of the optical signal transmitted through the optical fiber to be weak, resulting in a decrease in the signal-to-noise ratio at the receiving end, an increase in the bit error rate, and signal attenuation. Therefore, the present invention receives wireless communication signals through an adaptive multi-band antenna array (including multiple antennas), and selects the initial wireless communication signal with the largest power as the initial wireless communication signal received by the adaptive multi-band antenna array, thereby making the signal strength of the received initial wireless communication signal stronger, thereby making the signal strength of the optical signal transmitted through the optical fiber stronger, thereby increasing the signal-to-noise ratio at the receiving end, reducing the bit error rate, and improving the quality of the signal received by the receiving end.

[0020] The process of suppressing the noise of the initial wireless communication signal by an adaptive filter to obtain a denoised wireless communication signal includes: The structure of the adaptive filter is expressed as: ; in, is the output signal of the adaptive filter. In the time domain, the output signal is calculated by weighted summation, which represents the signal after being processed by the filter. is the order of the adaptive filter, is the index of the order of the adaptive filter, are different time delay terms of the initial wireless communication signal, Indicates the initial wireless communication signal Delays in time, e.g. is the initial wireless communication signal at the current moment, is the initial wireless communication signal at the previous moment, and so on. for Adjustable weight coefficient of The adjustable weight coefficient is updated by LMS algorithm (least mean square algorithm), and the updated adjustable weight coefficient is input into the adaptive filter, and the adaptive filter is output to obtain a de-noised wireless communication signal; It should be explained that updating the adjustable weight coefficient by LMS algorithm (least mean square algorithm) is a prior art and will not be described in detail here; The process of demodulating the denoised wireless communication signal by the intelligent demodulator to obtain the wireless communication baseband signal includes: The intelligent demodulator is provided with demodulation methods corresponding to s_m modulation modes (such as OFDM, QAM, etc.), obtains the modulation mode corresponding to the denoised wireless communication signal, inputs the denoised wireless communication signal and the modulation mode corresponding to the denoised wireless communication signal into the intelligent demodulator, and the intelligent demodulator uses the corresponding demodulation method according to the modulation mode corresponding to the denoised wireless communication signal to demodulate the denoised wireless communication signal to obtain the wireless communication baseband signal ,The wireless communication baseband signal is represented in binary form; in, is the index of the channel, For the A wireless communication baseband signal of a channel.

[0021] The wireless communication baseband signal is divided into The process of wireless communication baseband sub-signal includes: Obtain the length of the wireless communication baseband signal, divide the length of the wireless communication baseband signal by the length of the wireless communication baseband sub-signal to obtain a division result, and determine whether to fill the wireless communication baseband signal according to the division result. If the division result is an integer, the wireless communication baseband signal is not filled; if the division result is not an integer, the wireless communication baseband signal is filled; The process of filling the wireless communication baseband signal includes: Obtain the remainder of the length of the wireless communication baseband signal divided by the length of the wireless communication baseband sub-signal, and subtract the remainder of the length of the wireless communication baseband signal divided by the length of the wireless communication baseband sub-signal from the length of the wireless communication baseband sub-signal to obtain a subtraction result. ; Add at the end of the wireless communication baseband signal Binary ; Every The wireless communication baseband signal is divided once, and the A wireless communication baseband sub-signal, is the length of the wireless communication baseband sub-signal; The wireless communication baseband sub-signal is encrypted by the wireless key matrix, and the process of obtaining the encrypted wireless communication baseband sub-signal includes: Generated by random value generation formula Random values, the random value generation formula is: ; in, The random value generated by the random value generation formula, is a randomly changing value and ; Indicates a random generation of arrive Floating value between; It needs to be explained that in In this term, the exponential function Rapid growth, external application Function makes it different Complex fluctuations are formed under the value, generating a value with periodicity but losing its stable periodicity under the influence of high-order exponential growth, making the overall pattern more chaotic. In this term, cosine The frequency of fluctuations Growth and acceleration, In the denominator, ensure that the overall value does not increase infinitely, and at the same time make the fluctuation larger Gradually stabilized, In this term, the logarithmic function Slow growth, smooth control of the overall trend, sine function Makes the fluctuation more complex (than linear changes faster), divided by Let the overall amplitude be larger will not be too large, this item will increase with becomes larger, the overall amplitude decreases, but still retains a certain random fluctuation; Set the random value threshold. When the random value is greater than or equal to the random value threshold, replace the random value with , when the random value is less than the random value threshold, replace the random value with , collect all replaced random values ​​to obtain the starting key; Convert the starting key into a starting key matrix, including: Build The empty matrix, ;and , the beginning of the key The binary map of the starting key is mapped to the first row of the empty matrix. to The binary map of the starting key is mapped to the second row of the empty matrix. to The binary bit is mapped to the third row of the empty matrix, ..., the first to The binary mapping of the bit to the empty matrix In the row, obtain the starting key matrix; According to the wireless communication baseband sub-signal, the starting key matrix is ​​processed by using an exclusive OR operation and an exclusive OR operation method to obtain a wireless key matrix corresponding to the wireless communication baseband sub-signal, specifically including: Convert the first three binary bits of the wireless communication baseband signal to decimal , convert the last three binary digits of the wireless communication baseband sub-signal into decimal ; The first Row and The rows are XORed and the first Row and The rows are XORed and the first The binary in the row is deleted and the result of the XOR operation is filled into the first The first row of the starting key matrix The binary in the row is deleted, and the result of the exclusive OR operation is filled into the first row, obtaining a wireless key matrix corresponding to the wireless communication baseband sub-signal; It needs to be explained that Convert the first three binary digits of the wireless communication baseband sub-signal to the corresponding decimal value. Convert the last three binary digits of the wireless communication baseband sub-signal into a decimal value corresponding to the decimal system; Converting a wireless communication baseband sub-signal into a wireless communication baseband sub-signal matrix based on a process of converting a starting key into a starting key matrix; Obtaining the time when the wireless communication baseband signal segmentation is completed, and performing an XOR operation on the binary in the corresponding wireless key matrix and the binary in the wireless communication baseband sub-signal matrix according to the time when the wireless communication baseband signal segmentation is completed, to obtain the encrypted wireless communication baseband sub-signal matrix; For example, the time when the wireless communication baseband signal segmentation ends is 06:58:25 on February 28, 2024, and the corresponding number is 20240228065825. If 0 is replaced by 1, the corresponding number is 21241228165825. If the first two digits of the number corresponding to the time when the wireless communication baseband signal is segmented are 2 and 1, then the second row of the wireless key matrix is ​​XORed with the first row of the wireless communication baseband sub-signal matrix, and the first row of the wireless communication baseband sub-signal matrix is ​​replaced with the result of the XOR operation. If the third and fourth digits of the number corresponding to the time when the wireless communication baseband signal is segmented are 2 and 4, respectively, then the second row of the wireless key matrix is ​​XORed with the fourth row of the wireless communication baseband sub-signal matrix, and the fourth row of the wireless communication baseband sub-signal matrix is ​​replaced with the result of the XOR operation. ... If the second to last digit and the first to last digit of the number corresponding to the time when the wireless communication baseband signal is segmented are 2 and 5, then the second row of the wireless key matrix is ​​XORed with the fifth row of the wireless communication baseband sub-signal matrix, and the fifth row of the wireless communication baseband sub-signal matrix is ​​replaced with the result of the XOR operation, and the encrypted wireless communication baseband sub-signal matrix is ​​obtained. Obtaining an encrypted wireless communication baseband sub-signal according to the encrypted wireless communication baseband sub-signal matrix specifically includes: The binary in the first row of the encrypted wireless communication baseband sub-signal matrix is ​​used as the front of the encrypted wireless communication baseband sub-signal. The binary in the second row of the encrypted wireless communication baseband sub-signal matrix is ​​used as the first bit of the encrypted wireless communication baseband sub-signal. to The binary in the third row of the encrypted wireless communication baseband sub-signal matrix is ​​used as the first binary in the encrypted wireless communication baseband sub-signal matrix. to bit binary, ..., the encrypted wireless communication baseband sub-signal matrix The binary in the row is used as the encrypted wireless communication baseband sub-signal. to Bit binary; It should be explained that the encrypted wireless communication baseband sub-signals are combined to obtain the encrypted wireless communication baseband signal according to the division order. For example, if the wireless communication baseband signal is 011011, the wireless communication baseband signal is divided into The wireless communication baseband sub-signals are 01, 10 and 11 respectively, and the encrypted wireless communication baseband sub-signals are 11, 01 and 10 respectively. After the encrypted wireless communication baseband sub-signals are combined, the encrypted wireless communication baseband signal obtained is 110110; It needs to be explained that the traditional encryption algorithm encrypts the wireless communication baseband sub-signal in a specific way, and the encryption algorithm is specific and unchanged, which makes the encrypted wireless communication baseband sub-signal easier to crack, thereby reducing the security of the signal during transmission and causing data leakage. Therefore, the present invention encrypts the wireless communication baseband sub-signal through a wireless key matrix, and the acquisition of the wireless key matrix is ​​related to the wireless communication baseband sub-signal itself, and the wireless communication baseband sub-signal is encrypted through the wireless key matrix according to the time when the wireless communication baseband signal segmentation ends, breaking the specificity of the encryption algorithm, and the acquisition process of the wireless key matrix has a basis, and the encryption process also has a basis, thereby improving the security of the signal transmission process and ensuring that data will not be leaked during the transmission process.

[0022] The process of converting the encrypted wireless communication baseband signal into a wired communication optical signal through an optical-to-electrical converter includes: The encrypted wireless communication baseband signal is input into the photoelectric converter, which converts the input encrypted wireless communication baseband signal to obtain a wired communication optical signal. ; in, ; is the conversion gain factor, which is determined by the characteristics of the photoelectric converter. For the Channels of wired communication optical signals, For the An encrypted wireless communication baseband signal of a channel; The process of modulating the wired communication optical signal to obtain the modulated communication optical signal and transmitting the modulated communication optical signal through the optical fiber includes: Each channel is provided with a corresponding modulated optical carrier signal, and the wired communication optical signal is modulated according to the modulated optical carrier signal to obtain a modulated communication optical signal ; in, ; For the The amplitude of the modulated optical carrier signal of each channel, For the The modulated communication optical signal of each channel is For the The frequency of the modulated optical carrier signal of each channel; The modulated communication optical signal of each channel is transmitted simultaneously through the optical fiber.

[0023] In this embodiment, the original wireless communication signal sent by the transmitter is received by an adaptive multi-band antenna array, and the original wireless communication signal sent by the transmitter is received by multiple antennas together. Each antenna has different characteristics and different receiving effects. The initial wireless communication signal with the largest power is selected as the initial wireless communication signal received by the adaptive multi-band antenna array, so that the signal strength of the received initial wireless communication signal is stronger, so that the signal strength of the optical signal transmitted through the optical fiber is stronger, so that the signal-to-noise ratio of the receiving end is increased, the bit error rate is reduced, and the quality of the signal received by the receiving end is improved; the wireless communication baseband sub-signal is encrypted by a wireless key matrix, the acquisition of the wireless key matrix is ​​related to the wireless communication baseband sub-signal itself, and the wireless communication baseband sub-signal is encrypted by the wireless key matrix according to the time when the wireless communication baseband signal is segmented, breaking the specificity of the encryption algorithm, and the acquisition process of the wireless key matrix has a basis, and the encryption process also has a basis, thereby improving the security of the signal transmission process and ensuring that data will not be leaked during the transmission process; the wired communication optical signal is modulated to obtain a modulated communication optical signal, and the modulated communication optical signal is transmitted through the optical fiber, and multiple optical signals are transmitted simultaneously on the same optical fiber, thereby increasing the transmission speed and improving the transmission efficiency.

[0024] Example 2 See also Figure 2 As shown, the part not described in detail in this embodiment is described in Example 1, which provides a wireless communication to optical fiber communication method supporting multiple communication protocols, including: Step S1: receiving an original wireless communication signal sent by a transmitting end through an adaptive multi-band antenna array, and recording the original wireless communication signal received by the adaptive multi-band antenna array as an initial wireless communication signal; Step S2: performing noise suppression on the initial wireless communication signal through an adaptive filter to obtain a denoised wireless communication signal, and demodulating the denoised wireless communication signal through an intelligent demodulator to obtain a wireless communication baseband signal; Step S3: dividing the wireless communication baseband signal into wireless communication baseband sub-signals, encrypting the wireless communication baseband sub-signals by using a wireless key matrix to obtain encrypted wireless communication baseband sub-signals, and merging the encrypted wireless communication baseband sub-signals to obtain an encrypted wireless communication baseband signal; Step S4: convert the encrypted wireless communication baseband signal into a wired communication optical signal through an optoelectronic converter, modulate the wired communication optical signal to obtain a modulated communication optical signal, and transmit the modulated communication optical signal through an optical fiber.

[0025] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed in the present invention can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0026] In the several embodiments provided by the present invention, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of the units is only one, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0027] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0028] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wireless communication to optical fiber communication system supporting multiple communication protocols, characterized in that: The wireless communication to optical fiber communication system supporting multiple communication protocols comprises: A wireless signal receiving module, used to receive the original wireless communication signal sent by the transmitting end through the adaptive multi-band antenna array, and record the original wireless communication signal received by the adaptive multi-band antenna array as the initial wireless communication signal; A wireless signal processing module is used to suppress noise on an initial wireless communication signal through an adaptive filter to obtain a denoised wireless communication signal, and to demodulate the denoised wireless communication signal through an intelligent demodulator to obtain a wireless communication baseband signal; Baseband signal encryption module, used to divide wireless communication baseband signals into wireless communication baseband sub-signals, obtaining a starting key by a random value generation formula, converting the starting key into a starting key matrix, processing the starting key matrix by an exclusive OR operation and an exclusive OR operation method according to the wireless communication baseband sub-signals, obtaining a wireless key matrix, encrypting the wireless communication baseband sub-signals by the wireless key matrix, obtaining an encrypted wireless communication baseband sub-signal, and merging the encrypted wireless communication baseband sub-signals to obtain an encrypted wireless communication baseband signal; A conversion and transmission module, used to convert the encrypted wireless communication baseband signal into a wired communication optical signal through a photoelectric converter, modulate the wired communication optical signal to obtain a modulated communication optical signal, and transmit the modulated communication optical signal through an optical fiber; The modules are connected to each other via wired and / or wireless means.

2. A wireless communication to optical fiber communication system supporting multiple communication protocols according to claim 1, characterized in that: The method for receiving the original wireless communication signal sent by the transmitter through the adaptive multi-band antenna array includes: The full frequency band of the original wireless communication signal is scanned by an ultra-wideband receiver to obtain the frequency response of the original wireless communication signal: ; in, is the number of subbands of the original wireless communication signal, is the index of the number of subbands, is the first The frequency response of each sub-band is is the base of natural logarithms, is the frequency, is an imaginary unit, is the first The time delay of each sub-band; The frequency domain form of the initial wireless communication signal is obtained according to the frequency domain form of the original wireless communication signal and the frequency response of the original wireless communication signal ; in, ; is the frequency domain form of the original wireless communication signal; Perform inverse Fourier transform on the frequency domain form of the initial wireless communication signal to obtain the initial wireless communication signal ; in, ; represents discrete time points, Express Perform an inverse Fourier transform, is the first The frequency response of each sub-band is obtained by inverse Fourier transform. ; Express Perform an inverse Fourier transform, represents the convolution operation, is the original wireless communication signal, Indicates that the original wireless communication signal is shifted to the right , is the translation amount; Calculate the power spectral density of the initial wireless communication signal ; in, ; is the number of discrete time points; Get the power spectrum density of the initial wireless communication signal Maximum The value of is recorded as the frequency of the initial wireless communication signal ; The adaptive multi-band antenna array comprises antenna elements, calculate the resonant frequency of each antenna element ; in, ; is the index of the antenna element, For the The resonant frequency of each antenna element, For the The inductance of each antenna element, For the The capacitance of each antenna element; The inductance of the antenna unit is adjusted so that ; The first The inductance of each antenna unit is adjusted to ; in, ; The initial wireless communication signal is received by the antenna unit after inductance adjustment, the power of the initial wireless communication signal received by each antenna unit is obtained, and the initial wireless communication signal with the maximum power is used as the initial wireless communication signal received by the adaptive multi-band antenna array.

3. A wireless communication to optical fiber communication system supporting multiple communication protocols according to claim 2, characterized in that: The method of suppressing noise of an initial wireless communication signal by using an adaptive filter to obtain a denoised wireless communication signal comprises: The structure of the adaptive filter is expressed as: ; in, is the output signal of the adaptive filter, is the order of the adaptive filter, is the index of the order of the adaptive filter, are different time delay terms of the initial wireless communication signal, Indicates the initial wireless communication signal Delay in time, for Adjustable weight coefficient of The adjustable weight coefficient is updated by the LMS algorithm, and the updated adjustable weight coefficient is input into the adaptive filter, and the adaptive filter is output to obtain a denoised wireless communication signal.

4. A wireless communication to optical fiber communication system supporting multiple communication protocols according to claim 3, characterized in that: The method of demodulating the denoised wireless communication signal by an intelligent demodulator to obtain a wireless communication baseband signal comprises: The intelligent demodulator is provided with demodulation methods corresponding to s_m modulation modes, the modulation mode corresponding to the denoised wireless communication signal is obtained, the denoised wireless communication signal and the modulation mode corresponding to the denoised wireless communication signal are input into the intelligent demodulator, and the intelligent demodulator uses the corresponding demodulation method according to the modulation mode corresponding to the denoised wireless communication signal to demodulate the denoised wireless communication signal, and obtains the wireless communication baseband signal ,The wireless communication baseband signal is represented in binary form; in, is the index of the channel, For the A wireless communication baseband signal of a channel.

5. A wireless communication to optical fiber communication system supporting multiple communication protocols according to claim 4, characterized in that: The wireless communication baseband signal is divided into A method for wirelessly communicating a baseband sub-signal includes: Obtain the length of the wireless communication baseband signal, divide the length of the wireless communication baseband signal by the length of the wireless communication baseband sub-signal to obtain a division result, and determine whether to fill the wireless communication baseband signal according to the division result. If the division result is an integer, the wireless communication baseband signal is not filled; if the division result is not an integer, the wireless communication baseband signal is filled; Every The wireless communication baseband signal is divided once, and the A wireless communication baseband sub-signal, is the length of the wireless communication baseband sub-signal.

6. A wireless communication to optical fiber communication system supporting multiple communication protocols according to claim 5, characterized in that: The method for filling a wireless communication baseband signal comprises: Obtain the remainder of the length of the wireless communication baseband signal divided by the length of the wireless communication baseband sub-signal, and subtract the remainder of the length of the wireless communication baseband signal divided by the length of the wireless communication baseband sub-signal from the length of the wireless communication baseband sub-signal to obtain a subtraction result. ; Add at the end of the wireless communication baseband signal Binary .

7. A wireless communication to optical fiber communication system supporting multiple communication protocols according to claim 6, characterized in that: The method of obtaining a starting key by a random value generation formula, converting the starting key into a starting key matrix, processing the starting key matrix by an XOR operation and an XOR operation method according to the wireless communication baseband sub-signal, obtaining a wireless key matrix, encrypting the wireless communication baseband sub-signal by the wireless key matrix, and obtaining the encrypted wireless communication baseband sub-signal comprises: Generated by random value generation formula Random values, the random value generation formula is: ; in, The random value generated by the random value generation formula, is a randomly changing value and ; Indicates a random generation of arrive Floating value between; Set the random value threshold. When the random value is greater than or equal to the random value threshold, replace the random value with , when the random value is less than the random value threshold, replace the random value with , collect all replaced random values ​​to obtain the starting key; Convert the starting key into a starting key matrix, including: Build The empty matrix, ;and , the beginning of the key The binary map of the starting key is mapped to the first row of the empty matrix. to The binary map of the starting key is mapped to the second row of the empty matrix. to The binary bit is mapped to the third row of the empty matrix, ..., the first to The binary bit is mapped to the empty matrix In the row, obtain the starting key matrix; Convert the first three binary bits of the wireless communication baseband signal to decimal , convert the last three binary digits of the wireless communication baseband signal into decimal ; The first Row and The rows are XORed and XORed, and the first The binary in the row is deleted and the result of the XOR operation is filled into the first The first row of the starting key matrix The binary in the row is deleted, and the result of the exclusive OR operation is filled into the first row, obtaining a wireless key matrix corresponding to the wireless communication baseband sub-signal; Converting a wireless communication baseband sub-signal into a wireless communication baseband sub-signal matrix based on a process of converting a starting key into a starting key matrix; Obtaining the time when the wireless communication baseband signal segmentation is completed, and performing an XOR operation on the binary in the corresponding wireless key matrix and the binary in the wireless communication baseband sub-signal matrix according to the time when the wireless communication baseband signal segmentation is completed, to obtain the encrypted wireless communication baseband sub-signal matrix; The binary in the first row of the encrypted wireless communication baseband sub-signal matrix is ​​used as the front of the encrypted wireless communication baseband sub-signal. The binary in the second row of the encrypted wireless communication baseband sub-signal matrix is ​​used as the first bit of the encrypted wireless communication baseband sub-signal. to bit binary, ..., and so on, the encrypted wireless communication baseband signal matrix The binary in the row is used as the encrypted wireless communication baseband sub-signal. to Bit binary, to obtain the encrypted wireless communication baseband sub-signal.

8. A wireless communication to optical fiber communication system supporting multiple communication protocols according to claim 7, characterized in that: The method of converting the encrypted wireless communication baseband signal into a wired communication optical signal by means of a photoelectric converter comprises: The encrypted wireless communication baseband signal is input into the photoelectric converter, which converts the input encrypted wireless communication baseband signal to obtain a wired communication optical signal. ; in, ; is the conversion gain factor, For the Channels of wired communication optical signals, For the The encrypted wireless communication baseband signal of each channel.

9. A wireless communication to optical fiber communication system supporting multiple communication protocols according to claim 8, characterized in that: The method of modulating the wired communication optical signal to obtain a modulated communication optical signal and transmitting the modulated communication optical signal through an optical fiber includes: Each channel is provided with a corresponding modulated optical carrier signal, and the wired communication optical signal is modulated according to the modulated optical carrier signal to obtain a modulated communication optical signal ; in, ; For the The amplitude of the modulated optical carrier signal of each channel, For the The modulated communication optical signal of each channel is For the The frequency of the modulated optical carrier signal of each channel; The modulated communication optical signal of each channel is transmitted simultaneously through the optical fiber.

10. A wireless communication to optical fiber communication method supporting multiple communication protocols, which is used to implement a wireless communication to optical fiber communication system supporting multiple communication protocols as claimed in any one of claims 1 to 9, characterized in that: include: Step S1: receiving an original wireless communication signal sent by a transmitting end through an adaptive multi-band antenna array, and recording the original wireless communication signal received by the adaptive multi-band antenna array as an initial wireless communication signal; Step S2: performing noise suppression on the initial wireless communication signal through an adaptive filter to obtain a denoised wireless communication signal, and demodulating the denoised wireless communication signal through an intelligent demodulator to obtain a wireless communication baseband signal; Step S3: dividing the wireless communication baseband signal into wireless communication baseband sub-signals, encrypting the wireless communication baseband sub-signals by using a wireless key matrix to obtain encrypted wireless communication baseband sub-signals, and merging the encrypted wireless communication baseband sub-signals to obtain an encrypted wireless communication baseband signal; Step S4: convert the encrypted wireless communication baseband signal into a wired communication optical signal through an optoelectronic converter, modulate the wired communication optical signal to obtain a modulated communication optical signal, and transmit the modulated communication optical signal through an optical fiber.

Images