Communication distance increasing method and system based on grouping correlation detection

Abstract

The invention provides a communication distance increasing method and system based on packet correlation detection. The method comprises the following steps: converting a received wireless radio frequency signal into an analog electric signal; amplifying the analog electric signal to a proper level; converting the amplified analog electric signal into a digital signal; performing signal synchronization on the digital signal and determining a symbol position; dividing the signals corresponding to each k-bit group into one group; for any group of k-bit groups, calculating the joint signal-to-noise ratio of each path of possible values of all possible 2k paths of information bits, comparing the joint signal-to-noise ratios of the 2k paths, and giving out judgment output of the k-bit groups; and receiving judgment output and outputting information in a format specified by a protocol, thereby completing system communication distance improvement under the condition that the state of the transmitting end is not changed. According to the technical scheme, the technical problem that in the prior art, for a communication system which is completely deployed and is difficult to improve the transmitting power or replace an antenna, it is difficult to find out other effective means to improve the operating distance is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication system, and particularly relates to a communication distance improving method and system based on packet correlation detection. BACKGROUND

[0002] For a communication system, its action distance is one of the key technical indexes. The conventional measures to improve the action distance include improving the transmitting power, increasing the transmitting / receiving antenna gain and the like, so as to improve the signal strength at the maximum distance of the receiving end to meet the demodulation threshold requirement. However, for a communication system which has been deployed perfectly and is difficult to improve the transmitting power or replace the antenna (such as deep space exploration information backhaul), it is difficult to find other effective measures to improve the action distance. SUMMARY

[0003] The present application provides a communication distance improving method and system based on packet correlation detection, which can solve the technical problem that it is difficult to find other effective measures to improve the action distance for a communication system which has been deployed perfectly and is difficult to improve the transmitting power or replace the antenna.

[0004] According to an aspect of the present application, a communication distance improving method based on packet correlation detection is provided, which comprises the following steps: converting a received wireless radio frequency signal into an analog electric signal; amplifying the analog electric signal to a suitable electric level to adapt to the processing of an analog-digital conversion module; performing fast sampling processing on the amplified analog electric signal, converting the analog signal into a digital signal; performing signal synchronization on the digital signal and determining the symbol position, so as to realize the accurate positioning of k-bit information packet; dividing the signal corresponding to each k-bit packet into a group; for any one group of k-bit packets, calculating the joint signal-to-noise ratio of all possible 2 k bit information bits, comparing the joint signal-to-noise ratios of the 2 k bit information bits, and giving the decision output of the k-bit packet; receiving the decision output and performing information output in the protocol specified format, to complete the system communication distance improvement without changing the state of the transmitting end.

[0005] Further, for any one group of k-bit packets, the joint signal-to-noise ratio of all possible 2 kThe calculation of the joint signal-to-noise ratio (SNR) for each k-bit information group includes the following steps: multiplying the signal corresponding to each bit of information by the first bit symbol conjugate, and then summing the results to obtain the joint SNR of the first k-bit information group; multiplying the signal corresponding to each bit of information by the second bit symbol conjugate, and then summing the results to obtain the joint SNR of the second k-bit information group; multiplying the signal corresponding to each bit of information by the third bit symbol conjugate, and then summing the results to obtain the joint SNR of the third k-bit information group; repeating the above process to obtain the joint SNR of the fourth k-bit information group, the fifth k-bit information group, ... and the kth k-bit information group in sequence.

[0006] Furthermore, comparing 2 k The joint signal-to-noise ratio (SNR) of the k-bit information packets is calculated, and the decision output for the k-bit packets is given. Specifically, the joint SNR of the first k-bit information packets, the joint SNR of the second k-bit information packets, ... and the joint SNR of the k-th k-bit information packets are compared, and the information bit value corresponding to the one with the largest joint SNR is taken as the decision output for the k-bit packets.

[0007] According to another aspect of the present invention, a communication distance enhancement system based on packet correlation detection is provided, wherein the communication distance enhancement system based on packet correlation detection uses the communication distance enhancement method based on packet correlation detection as described above for intelligent signal reception processing.

[0008] Furthermore, the communication distance enhancement system based on packet correlation detection includes a receiving antenna, a low-noise amplification module, an analog-to-digital conversion module, a pilot synchronization module, a k-bit symbol packet module, and a 2 k The circuit comprises a signal-to-noise ratio (SNR) calculation module, a symbol decision module, and an information processing module. The receiving antenna converts the received radio frequency signal into an analog electrical signal. A low-noise amplifier module amplifies the analog electrical signal to a suitable level for processing by the analog-to-digital converter (ADC). The ADC performs rapid sampling of the amplified analog electrical signal, converting it into a digital signal. A pilot synchronization module synchronizes the digital signal and determines the symbol position to achieve accurate positioning of k-bit information packets. A k-bit symbol grouping module groups the signal corresponding to each k-bit packet into a single group. k The combined signal-to-noise ratio (SNR) calculation module is used to calculate all possible 2^k bits for any given k-bit group. k The path information bits may take values ​​from the calculation of the joint signal-to-noise ratio for each path. The symbol decision module is used to compare 2. k The system calculates the joint signal-to-noise ratio of the path and provides a decision output for k-bit packets. The information processing module receives the decision output and outputs information in the format specified by the protocol, thereby increasing the system communication distance without changing the state of the transmitting end.

[0009] According to another aspect of the present application, a computer device is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the communication distance promotion method based on group correlation detection as described above.

[0010] According to still another aspect of the present application, a computer readable storage medium is provided, which stores a computer program, wherein the computer program is executable by a processor to implement the steps of the communication distance promotion method based on group correlation detection as described above.

[0011] The technical scheme of the present application provides a communication distance promotion method based on group correlation detection, which adopts an intelligent receiving and processing algorithm. Based on the use of pilots to achieve synchronization, the receiving end calculates the joint signal-to-noise ratio of multiple information bits and all possible information values, and obtains the information arrangement corresponding to the maximum value through the comparison of the traversal values under all possible information value conditions, as the processing result of these information bits. In this way, the transmitting end does not need to make any changes, and only needs to implement multi-path parallel calculation at the receiving end, using the calculation and processing time resources, to achieve the effect of the superposition of the signal-to-noise ratios of multiple information bits, to promote the receiving signal-to-noise ratio, and can be jointly implemented with the increase of the receiving antenna gain to further promote the system action distance. Therefore, compared with the prior art, the intelligent receiving and processing method provided by the present application implements the superposition of multiple information bit powers at the receiving end in multi-path parallel to promote the receiving signal-to-noise ratio, and can effectively solve the problem of avoiding large-scale modification or even reconstruction of the transmitting end of the existing communication system, and effectively reduce the design difficulty of the communication system action distance promotion modification. Through the parallel processing and comparison at the receiving end, the related arithmetic and the maximum value are selected as the processing result, the superposition and merging of multiple information bits are realized, and the receiving gain is obtained. BRIEF DESCRIPTION OF DRAWINGS

[0012] The accompanying drawings included to provide a further understanding of the embodiments of the present application and constitute a part of the specification, illustrate embodiments of the present application and together with the text description serve to explain the principles of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0013] Figure 1 A receiving end architecture composition schematic diagram of the communication distance promotion method and system based on group correlation detection provided according to the specific embodiments of the present application is shown;

[0014] Figure 2 A detailed design description schematic diagram of the joint signal-to-noise ratio calculation module provided according to the specific embodiments of the present application is shown; k A detailed design description schematic diagram of the joint signal-to-noise ratio calculation module provided according to the specific embodiments of the present application is shown;

[0015] Figure 3 Fig. 1 shows a schematic diagram illustrating a frame header pilot sequence according to an embodiment of the present application. DETAILED DESCRIPTION

[0016] It should be noted that the embodiments and features of the embodiments herein can be combined with each other as long as there is no conflict. In the following, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative and is by no means as any limitation to the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0017] It should be noted that the terms used herein are only intended to describe specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should be further understood that the terms "comprise" and / or "include" as used herein indicate the presence of the features, steps, operations, devices, components and / or combinations thereof.

[0018] The relative arrangement of the components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application, unless otherwise specifically stated. It should be understood that the sizes of the various portions shown in the drawings are not drawn to scale for the purpose of convenience of description. The techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the authorized description, if appropriate. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary, and not as limiting. Therefore, other examples of the exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0019] As Figures 1 to 3As shown, the embodiment of the application provides a communication distance improving method based on packet correlation detection, which comprises: converting a received wireless radio frequency signal into an analog electric signal; amplifying the analog electric signal to a proper level to adapt to an analog-digital conversion module; performing fast sampling processing on the amplified analog electric signal to convert the analog signal into a digital signal; performing signal synchronization on the digital signal and determining a symbol position to realize accurate positioning of k-bit information packets; dividing the signal corresponding to each k-bit packet into a group; for any one group of k-bit packets, completing all possible 2 k calculating joint signal-to-noise ratios of each path information bit, comparing 2 k joint signal-to-noise ratios of each path, and giving a decision output of the k-bit packet; receiving the decision output and performing information output in a protocol specified format to complete system communication distance improvement without changing the state of the transmitting end.

[0020] By using this configuration, the application provides a communication distance improving method based on packet correlation detection, which calculates joint signal-to-noise ratios of multiple information bits and all possible information values on the basis of synchronization achieved by using a pilot, and obtains an information arrangement corresponding to a maximum value through comparison of all possible information values, as a processing result of the information bits. In this way, the transmitting end does not need to be changed, and only the receiving end needs to perform multi-path parallel calculation, uses calculation and processing time resources, and achieves the effect of superposition of multiple information bit signal-to-noise ratios, realizes improvement of the receiving signal-to-noise ratio, and can be used together with increasing of the receiving antenna gain to further improve the system effective distance. Therefore, compared with the prior art, the intelligent receiving and processing method provided by the application realizes superposition of multiple information bit powers in the receiving end to improve the receiving signal-to-noise ratio, effectively solves the problem of avoiding large-scale modification or even reconstruction of the transmitting end of the existing communication system, and effectively reduces the design difficulty of communication system effective distance improvement modification. Through parallel processing and comparison in the receiving end, a related arithmetic and a maximum value are selected as a processing result, multiple information bits are superposed and combined, and receiving gain is obtained.

[0021] Specifically, in the application, as Figure 1The diagram shows the communication distance enhancement method based on packet correlation detection and the receiver architecture of the system. The receiving antenna converts the received radio frequency signal into an analog electrical signal; the low-noise amplification module amplifies the signal to a suitable level for processing by the analog-to-digital conversion module, minimizing additional noise; the analog-to-digital conversion module performs rapid sampling of the received signal, converting the analog signal into a digital signal to achieve distortion-free signal representation; the pilot synchronization module synchronizes the signal and determines the symbol position to achieve accurate positioning of k-bit information packets; the k-bit symbol grouping module groups the signal corresponding to each k-bit packet into a group, which serves as the input to the joint signal-to-noise ratio calculation module; 2 k The combined signal-to-noise ratio calculation module completes all possible 2 k The calculation of the joint signal-to-noise ratio (SNR) for each path information bit is as follows: the SNR of each k-bit information group is calculated by multiplying the signal corresponding to each bit information bit by the product of the conjugate of the corresponding bit symbol, and then summing them up. This involves performing k-bit symbol group correlation. The symbol decision module compares 2... k The joint signal-to-noise ratio of the paths is used to determine the information bit value corresponding to the path with the largest joint signal-to-noise ratio, which is then used as the k-bit group decision output. The information processing module is used to receive the decision output and output information in the format specified by the protocol.

[0022] Among them, complete all possible 2 k The calculation of the joint signal-to-noise ratio (SNR) for each k-bit information group includes the following steps: multiplying the signal corresponding to each bit of information by the first bit symbol conjugate, and then summing the results to obtain the joint SNR of the first k-bit information group; multiplying the signal corresponding to each bit of information by the second bit symbol conjugate, and then summing the results to obtain the joint SNR of the second k-bit information group; multiplying the signal corresponding to each bit of information by the third bit symbol conjugate, and then summing the results to obtain the joint SNR of the third k-bit information group; repeating the above process to obtain the joint SNR of the fourth k-bit information group, the fifth k-bit information group, ... and the kth k-bit information group in sequence.

[0023] In a specific embodiment of the present invention, the k-bit symbol grouping module divides the signal corresponding to each k-bit group into a group, which serves as the input to the joint signal-to-noise ratio calculation module. In this embodiment, a total of ten groups are formed, each group containing k bits of information. A 2x2x2 calculation is performed on each group. k The joint signal-to-noise ratio (SNR) of each path is calculated and the symbol is determined. The information bit value corresponding to the path with the largest joint SNR is taken as the k-bit block decision output.

[0024] Specifically, 2... kThe k-path joint signal-to-noise ratio calculation and symbol decision specifically includes: k-path possible values corresponding to each k-bit packet, which are 0000…00, 0000…01, 0000…10, 0000…11, …, 1111…11 in total 2 k A kind of, the signal (i.e. 0000…00, 0000…01, 0000…10, 0000…11, …, 1111…11) corresponding to each bit information bit is sequentially multiplied by the first bit symbol conjugate of the first group of k-bit information bits, then is accumulated to obtain the joint signal-to-noise ratio of the first k-bit information packet of first path;The signal (i.e. 0000…00, 0000…01, 0000…10, 0000…11, …, 1111…11) corresponding to each bit information bit is sequentially multiplied by the second bit symbol conjugate of the second group of k-bit information bits, then is accumulated to obtain the joint signal-to-noise ratio of the second k-bit information packet of second path;The signal (i.e. 0000…00, 0000…01, 0000…10, 0000…11, …, 1111…11) corresponding to each bit information bit is multiplied by the third bit symbol conjugate of the third group of k-bit information bits, then is accumulated to obtain the joint signal-to-noise ratio of the third k-bit information packet of third path;Repeat the above process, sequentially obtain the joint signal-to-noise ratio of the fourth k-bit information packet of fourth path, the joint signal-to-noise ratio of the fifth k-bit information packet of fifth path, … and the joint signal-to-noise ratio of the k-bit information packet of kth path. Then, the joint signal-to-noise ratio of the first k-bit information packet of first path, the joint signal-to-noise ratio of the second k-bit information packet of second path, … and the joint signal-to-noise ratio of the k-bit information packet of kth path are compared, and the information bit value corresponding to the path with the maximum joint signal-to-noise ratio is taken as the decision output of the k-bit packet of the first group of k-bit information bits.

[0025] After obtaining the decision output of the k-bit packet of the first group of k-bit information bits, the decision outputs of the k-bit packets of the second group of k-bit information bits, the third group of k-bit information bits, …, and the tenth group of k-bit information bits are sequentially calculated, wherein the calculation method of the decision outputs of the k-bit packets of the second group of k-bit information bits, the third group of k-bit information bits, …, and the tenth group of k-bit information bits is the same as that of the decision output of the k-bit packet of the first group of k-bit information bits.

[0026] According to another aspect of the present application, a communication distance improvement system based on packet correlation detection is provided, which uses the communication distance improvement method based on packet correlation detection as described above for intelligent receiving and processing of signals.

[0027] By using the configuration mode, a communication distance improving system based on grouped correlation detection is provided, and the receiving end of the system calculates joint signal-to-noise ratios of multiple information bits and all possible information values based on synchronization achieved by using a pilot, and obtains the information arrangement corresponding to the maximum value by comparing the traversal values under all possible information value conditions, as the processing result of the information bits. In this way, the transmitting end does not need to be changed, and only the receiving end needs to implement multiple parallel calculations, and the calculation and processing time resources are used to achieve the effect of superposition of the signal-to-noise ratios of multiple information bits, so that the receiving signal-to-noise ratio is improved, and the system effective distance can be further improved by increasing the receiving antenna gain. Therefore, compared with the prior art, the intelligent receiving and processing method provided by the present application implements the superposition of multiple information bit powers in the receiving end to improve the receiving signal-to-noise ratio, and the present application can effectively solve the problem of avoiding large-scale modification or even reconstruction of the transmitting end of the existing communication system, and effectively reduce the design difficulty of the communication system effective distance improvement. Through parallel processing and comparison of the receiving end, the correlation arithmetic and the maximum value are selected as the processing result, the multiple information bits are superposed and combined, and the receiving gain is obtained.

[0028] Further, in the present application, the communication distance improving system based on grouped correlation detection includes a receiving antenna, a low-noise amplification module, an analog-to-digital conversion module, a pilot synchronization module, a k-bit symbol grouping module, a two k way joint signal-to-noise ratio calculation module, a symbol decision module and an information processing module, the receiving antenna is used to convert the received wireless radio frequency signal into an analog electrical signal, the low-noise amplification module is used to amplify the analog electrical signal to a suitable electrical level to adapt to the processing of the analog-to-digital conversion module, the analog-to-digital conversion module is used to perform fast sampling processing on the amplified analog electrical signal, and convert the analog signal into a digital signal, the pilot synchronization module is used to perform signal synchronization on the digital signal and determine the symbol position, so as to accurately position the k-bit information grouping, the k-bit symbol grouping module is used to group the signals corresponding to each k-bit into a group, the two k way joint signal-to-noise ratio calculation module is used to calculate the joint signal-to-noise ratio of each possible two k way information bit value for any one group of k-bit, the symbol decision module is used to compare the joint signal-to-noise ratios of two k ways and give the decision output of the k-bit grouping, and the information processing module is used to receive the decision output and output the information in the protocol specified format, to complete the system communication distance improvement without changing the state of the transmitting end.

[0029] According to another aspect of the present application, a computer device includes a memory, a processor and a computer program stored in the memory and executable on the processor, and the processor executes the computer program to implement the steps of the communication distance improving method based on grouped correlation detection.

[0030] According to another aspect of the present application, a computer readable storage medium is provided, and the computer readable storage medium stores a computer program, and the computer program is executed by a processor to implement the steps of the communication distance promotion method based on the grouping correlation detection.

[0031] In order to have a further understanding of the present application, the following Figures 1 to 3 The communication distance promotion method based on the grouping correlation detection provided by the present application is described in detail.

[0032] As Figures 1 to 3 shown, the embodiment of the present application provides a communication distance promotion method based on the grouping correlation detection, and the present application aims to provide a communication distance promotion method based on the grouping correlation detection, so as to avoid the update iteration of the hardware and software of the transmitting end on one hand, and to exchange the calculation and processing time resources for the superposition signal-to-noise ratio gain of multiple information bits on the receiving end on the other hand, so as to realize the promotion of the system action distance.

[0033] The present application adopts the multiple information bit product traversal on the receiving end, performs the joint signal-to-noise ratio decision, lists all possible values of the information bits, performs the product of the symbols corresponding to all possible values and the received signal and performs the energy superposition to obtain multiple joint signal-to-noise ratios, realizes the grouping correlation detection, takes the information bit value corresponding to the maximum joint signal-to-noise ratio of all traversed joint signal-to-noise ratios as the decision result, and the multiple information bit joint signal-to-noise ratio is the superposition of each signal-to-noise ratio, so as to reduce the information symbol demodulation threshold requirement of the receiving end and realize the system communication distance multiplication.

[0034] The solution provided by the present application is as follows:

[0035] 1. The present application is especially suitable for various types of long-distance communication systems, such as satellite-borne detection equipment, deep space detection systems, etc.

[0036] 2. The present application designs the receiving end of the communication system and provides the processing flow.

[0037] 3. The receiving end of the communication system of the present application comprises eight modules, which are respectively: a receiving antenna, a low-noise amplification module, an analog-to-digital conversion module, a pilot synchronization module, a k-bit symbol grouping module, a 2 k bit joint signal-to-noise ratio calculation module, a symbol decision module and an information processing module.

[0038] 4. The receiving antenna of the receiving end of this invention completes the conversion of the wireless received signal into an analog electrical signal; the low-noise amplification module amplifies the signal to a suitable level and minimizes additional noise; the analog-to-digital conversion module completes the sampling of the received signal and converts the analog signal into a digital signal; the pilot synchronization module completes signal synchronization and determines the symbol position; the k-bit symbol grouping module realizes the grouping of useful information symbols into k-bit groups; 2 k The combined signal-to-noise ratio calculation module completes all possible 2 k The possible values ​​of the path information bits correspond to the calculation of the joint signal-to-noise ratio for each path; the symbol decision module compares 2 k The module calculates the joint signal-to-noise ratio of the path and provides a decision output for k-bit packets; the information processing module receives the decision output and outputs information in the format specified by the protocol.

[0039] As a specific embodiment of the present invention, see Figure 1 This invention employs a communication distance enhancement method based on packet correlation detection, enabling system upgrades without altering the transmitting end. The effective range is increased by superimposing the signal-to-noise ratio of multiple information bits. See also... Figure 2 This invention provides a method for calculating and deciding the signal-to-noise ratio (SNR) of multiple information bits. It utilizes the combined SNR of multiple possible information bit values ​​to traverse the spectrum and compares them to obtain the most probable transmitted signal decision. This achieves an equivalent increase in received SNR and a doubling of the effective range, at the cost of parallel computing and processing time. See also... Figure 3 This invention provides an explanation of the pilot sequence for the intelligent communication receiver frame header. The frame header sequence must ensure the accurate positioning of the information sequence in order to achieve an effective joint signal-to-noise ratio for subsequent communication.

[0040] Figure 1 The diagram shows the communication distance enhancement method based on packet correlation detection and the receiver architecture of the system. The receiving antenna converts the received radio frequency signal into an analog electrical signal; the low-noise amplification module amplifies the signal to a suitable level for processing by the analog-to-digital conversion module, minimizing additional noise; the analog-to-digital conversion module performs rapid sampling of the received signal, converting the analog signal into a digital signal to achieve distortion-free signal representation; the pilot synchronization module synchronizes the signal and determines the symbol position to achieve accurate positioning of k-bit information packets; the k-bit symbol grouping module groups the signal corresponding to each k-bit packet into a group, which serves as the input to the joint signal-to-noise ratio calculation module; 2 k The combined signal-to-noise ratio calculation module completes all possible 2 kThe joint signal-to-noise ratio of each path can be calculated, and the value of each k-bit information group is taken, and the value of the joint signal-to-noise ratio is the product of the signal corresponding to each bit of information and the conjugate of the bit symbol, and then the sum is obtained, that is, the correlation operation is performed; the symbol decision module compares the joint signal-to-noise ratio of 2k paths, and takes the value of the information bit corresponding to the path with the maximum joint signal-to-noise ratio as the detection decision output of the k-bit group; the information processing module is used to receive the decision output and output the information in the protocol specified format (such as pictures or videos).

[0041] Figure 2 As shown in 2 k The detailed design of the joint signal-to-noise ratio calculation module of each path is shown, wherein 2 k The joint signal-to-noise ratio calculation of each path means that the k possible values corresponding to each k-bit group are listed, which are 0000…00, 0000…01, 0000…10, 0000…11, …, 1111…11, a total of 2 k The joint signal-to-noise ratio calculation of the i-th path (i=1, 2, …2 k ) means that the baseband signal after analog-to-digital conversion is multiplied by the bit-wise conjugate of the k-bit information bit value, and the correlation value obtained is the joint signal-to-noise ratio; in an ideal case, the value of the joint signal-to-noise ratio of the i-th path reaches the maximum only when the k-bit group of the path is consistent with the transmitted symbol; the value of the joint signal-to-noise ratio of the i-th path is k 2 times that of the original single-bit decision, which is equivalent to reducing the demodulation threshold to 1 / k 2 , that is, the effective distance is increased to k times the original.

[0042] 3) Figure 3 As shown in the communication distance improvement method and system based on group correlation detection, the frame header pilot sequence is received; the k-bit group means that on the basis of the original physical layer protocol frame format, the frame header pilot sequence must be able to normally realize synchronization to determine the timing position of each information bit, and the accumulated signal-to-noise ratio gain of the data part is at least 6dB larger.

[0043] Compared with the prior art, the distributed coherent synthesis transceiver technology based on random chip delay and the system architecture design have the following technical advantages:

[0044] 1) No need to upgrade and iterate the hardware and software of the transmitting end. For a communication system (such as deep space exploration information backhaul) that has been deployed and improved and is difficult to improve the transmitting power or replace the antenna, the present scheme provides a feasible solution to improve the effective distance.

[0045] 2) The parameters can be flexibly adjusted. In the present scheme, the value of the multiple information bit k can be flexibly adjusted according to the actual use scene of the system, and depends on the current demand for effective distance improvement, so the present scheme has high engineering application value.

[0046] 3) Easy to implement in engineering. The scheme does not need complex algorithm and high-precision components, and has significant advantages in engineering implementation difficulty.

[0047] For the convenience of description, spatial relative terms such as "above", "upper", "on", "top", etc. can be used herein to describe the spatial positional relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "on" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0048] In addition, it should be noted that the use of "first", "second", etc. to define parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, and therefore cannot be understood as limiting the scope of protection of the present application.

[0049] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Those skilled in the art can make various modifications and changes to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A method for improving communication distance based on packet correlation detection, characterized in that, The communication distance promotion method based on packet correlation detection comprises: Converting the received wireless radio frequency signal into an analog electrical signal; Amplifying the analog electrical signal to a suitable level to adapt to the processing of the analog-digital conversion module; Performing fast sampling processing on the amplified analog electrical signal to convert the analog signal into a digital signal; Performing signal synchronization and determining symbol position on the digital signal to achieve accurate positioning of k-bit information packets; Dividing the signal corresponding to each k-bit packet into a group; For any k-bit group, complete all possible 2^k bits. k The path information bits may take values ​​from the calculation of the joint signal-to-noise ratio for each path, compared to 2. k The joint signal-to-noise ratio of the path is calculated, and the decision output of the k-bit block is given; Receiving the decision output and performing information output in the protocol specified format to complete the system communication distance promotion without changing the state of the transmitting end.

2. The method of claim 1, wherein, All possible 2 k The calculation of the joint signal-to-noise ratio of each channel with possible values of the road information bits specifically includes: Multiplying the signal corresponding to each bit of information by the first bit symbol conjugate, and then performing accumulation to obtain the joint signal-to-noise ratio of the first k-bit information packet; Multiplying the signal corresponding to each bit of information by the second bit symbol conjugate, and then performing accumulation to obtain the joint signal-to-noise ratio of the second k-bit information packet; Multiplying the signal corresponding to each bit of information by the third bit symbol conjugate, and then performing accumulation to obtain the joint signal-to-noise ratio of the third k-bit information packet; Repeating the above process to sequentially obtain the joint signal-to-noise ratio of the fourth k-bit information packet, the joint signal-to-noise ratio of the fifth k-bit information packet, and the joint signal-to-noise ratio of the kth k-bit information packet.

3. The method of claim 2, wherein the method further comprises: Comparison 2 k The comparing the joint signal-to-noise ratios of the paths and giving the decision output of the k-bit packet specifically comprises: comparing the joint signal-to-noise ratio of the first path k-bit information packet, the joint signal-to-noise ratio of the second path k-bit information packet, … and the joint signal-to-noise ratio of the kth path k-bit information packet, and taking the information bit value corresponding to the path with the maximum joint signal-to-noise ratio as the decision output of the k-bit packet.

4. A communication distance enhancement system based on packet correlation detection, characterized by, The communication distance promotion system based on packet correlation detection uses the communication distance promotion method based on packet correlation detection according to any one of claims 1 to 3 to perform intelligent receiving processing of signals.

5. The packet correlation detection based communication range boosting system of claim 4, wherein, The communication distance promotion system based on packet correlation detection comprises a receiving antenna, a low-noise amplification module, an analog-digital conversion module, a pilot synchronization module, a k-bit symbol packet module, a 2 k way joint signal-to-noise ratio calculation module, a symbol decision module and an information processing module, the receiving antenna is used to convert a received wireless radio frequency signal into an analog electric signal, the low-noise amplification module is used to amplify the analog electric signal to a suitable electric level to adapt to the processing of the analog-digital conversion module, the analog-digital conversion module is used to perform fast sampling processing on the amplified analog electric signal, and convert the analog signal into a digital signal, the pilot synchronization module is used to perform signal synchronization on the digital signal and determine a symbol position, so as to realize accurate positioning of k-bit information packets, the k-bit symbol packet module is used to divide a signal corresponding to each k-bit packet into a group, the 2 k way joint signal-to-noise ratio calculation module is used to complete the calculation of all possible 2 k way joint signal-to-noise ratios for any one group of k-bit packets, the symbol decision module is used to compare the joint signal-to-noise ratios of 2 k ways and give a decision output of the k-bit packet, and the information processing module is used to receive the decision output and perform information output in a protocol specified format, so as to complete system communication distance promotion without changing the state of a transmitting end.

6. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, The processor executes the computer program to implement the steps of the communication distance promotion method based on packet correlation detection according to any one of claims 1 to 3.

7. A computer-readable storage medium storing a computer program, wherein the computer program comprises the following steps of: receiving a request for a resource from a client; determining whether the client is authorized to access the resource; and if the client is authorized to access the resource, providing the resource to the client. The computer program is executed by the processor to implement the steps of the communication distance promotion method based on packet correlation detection according to any one of claims 1 to 3.

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