Signal modulation method, electronic device and readable storage medium

Abstract

The present invention relates to a signal modulation method, an electronic device and a readable storage medium, the method comprising the following steps: step 1: obtaining a uniformly distributed signal; step 2: converting the uniformly distributed signal into a non-uniformly distributed signal; step 3: modulating the obtained non-uniformly distributed signal onto each subcarrier of a discrete multi-carrier signal to obtain a discrete multi-carrier real signal carrying the non-uniform signal; step 4: processing the obtained discrete multi-carrier real signal by a Delta-Sigma modulator, and transmitting the processed signal through a transmission system. Compared with the prior art, the present invention has the advantages of strong anti-interference ability and wide application range.

Description

Technical Field

[0001] The present invention relates to the technical field of optical fiber communication and wireless communication, and in particular to a signal modulation method, electronic equipment and a readable storage medium. Background Art

[0002] With the increasing demand for high-speed applications, the amount of data used by end users is growing rapidly, which puts higher requirements on signal transmission speed and. At present, mobile front-end networks are mainly based on protocols, which have good resistance to transmission damage. However, due to the low spectrum efficiency of the public radio interface, it has become a bottleneck for digital mobile front-end networks to support large-scale mobile data transmission.

[0003] The existing technical solution has the problem of poor signal anti-interference ability and single or limited transmission mode in the process of transmitting after signal modulation. Summary of the invention

[0004] The purpose of the present invention is to provide a signal modulation method, an electronic device and a readable storage medium in order to overcome the defects of the above-mentioned prior art in that the signal has poor anti-interference ability and a limited or single transmission mode in the process of transmission after signal modulation.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A signal modulation method, an electronic device and a readable storage medium, the method comprising the following steps:

[0007] Step 1: Get a uniformly distributed signal;

[0008] Step 2: Convert the uniformly distributed signal into a non-uniformly distributed signal;

[0009] Step 3: Modulate the obtained non-uniformly distributed signal onto each subcarrier of the discrete multi-carrier signal.

[0010] A discrete multi-carrier real signal carrying a non-uniform signal is obtained;

[0011] Step 4: The obtained discrete multi-carrier real signal is processed by a Delta-Sigma modulator, and the processed signal is transmitted through a transmission system.

[0012] Furthermore, the uniformly distributed signal in step 1 is obtained by quadrature amplitude modulation or pulse amplitude modulation.

[0013] Furthermore, in step 2, the uniform signal is converted into a non-uniform signal by using a probability folding shaping technique.

[0014] Furthermore, in step 4, the processing of the discrete multi-carrier real signal by the Delta-Sigma modulator includes noise compression processing and signal quantization processing.

[0015] Furthermore, the transmission system in step 4 includes a direct adjustment and direct detection system, a coherent optical transmission system, a visible light transmission system or a wireless communication over fiber system.

[0016] Furthermore, in step 4, the quantization level of the discrete multi-carrier real number signal after quantization by the Delta-Sigma modulator is an unevenly distributed level.

[0017] Furthermore, the distribution of the quantized quantization levels conforms to the Gaussian distribution, that is, the number of small levels is larger, and as the level increases, the number of occurrences thereof decreases accordingly.

[0018] Furthermore, the quantization includes two-bit quantization or four-bit quantization.

[0019] The present solution also provides an electronic device, including a memory and a processor, wherein a computer program is stored in the memory, and the above method is implemented when the processor executes the program.

[0020] The present solution also provides a computer-readable storage medium, on which a computer program is stored, and the computer program is executed by a processor to execute the above method.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] (1) This scheme converts a uniformly distributed signal into a non-uniform signal, obtains a discrete multi-carrier real signal carrying the non-uniform signal through modulation, and finally processes the above signal through a Delta-Sigma modulator to obtain a final transmission signal, which is transmitted through a transmission system or network; In this scheme, the non-uniformized signal is quantized by a Delta-Sigma modulator, further increasing the number of small levels after quantization and increasing the Euclidean distance of the signal, thereby improving the signal's anti-noise ability and making the signal transmission more stable.

[0023] (2) The signal modulation of this scheme can be used in, but is not limited to, multiple communication transmission networks and systems, such as direct modulation and direct detection systems, coherent optical transmission systems, visible light transmission systems, optical wireless communication systems, mobile front-end networks and other communication systems, thus expanding the signal transmission channels. This scheme has a wider scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A flow chart of signal modulation provided by the present invention;

[0025] Figure 2The output signal distribution diagram of the Delta-Sigma modulator with 2-bit quantization processing provided by the present invention;

[0026] Figure 3 This is a distribution diagram of the Delta-Sigma modulator output signal after probability folding and shaping processing of 2-bit quantization provided by the present invention. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0030] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0031] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] Example 1

[0034] like Figure 1 As shown, a signal modulation method, an electronic device and a readable storage medium, the method comprising the following steps:

[0035] Step 1: Get a uniformly distributed signal;

[0036] Step 2: Convert the uniformly distributed signal into a non-uniformly distributed signal;

[0037] Step 3: The obtained non-uniformly distributed signal is modulated onto each subcarrier of the discrete multi-carrier signal to obtain a discrete multi-carrier real signal carrying the non-uniform signal;

[0038] Step 4: The obtained discrete multi-carrier real signal is processed by a Delta-Sigma modulator, and the processed signal is transmitted through a transmission system.

[0039] This scheme converts the uniformly distributed signal into a non-uniform signal, obtains a discrete multi-carrier real signal carrying the non-uniform signal through modulation, and finally processes the above signal through a Delta-Sigma modulator to obtain a final transmission signal, which is transmitted through a transmission system or network; in this scheme, the non-uniformized signal is quantized by a Delta-Sigma modulator, further increasing the number of small levels after quantization, increasing the Euclidean distance of the signal, thereby improving the signal's anti-noise ability, and the signal transmission has stronger stability.

[0040] The uniformly distributed signal in step 1 is obtained by quadrature amplitude modulation or pulse amplitude modulation.

[0041] In step 2, the uniform signal is converted into a non-uniform signal by the probability folding forming technology. In this scheme, the entropy of the signal after the probability folding forming process and the transmission baud rate of the signal can be adjusted according to the actual situation.

[0042] This scheme processes the signal inhomogeneously through probability folding and shaping. By changing the probability distribution of the constellation points and the entropy of the information, different data rates can be flexibly achieved, the system capacity can be increased, and the transmission capability of the system can be further improved for better signal transmission.

[0043] In step 4, the Delta-Sigma modulator processes the discrete multi-carrier real signal including noise compression processing and signal quantization processing. In this solution, the parameters of the Delta-Sigma modulator including the modulation order, oversampling rate, out-of-band noise gain coefficient, signal center frequency, modulator type, etc. can be adjusted without specific restrictions.

[0044] In step 4, the transmission system includes a direct modulation and direct detection system, a coherent optical transmission system, a visible light transmission system or a wireless communication over fiber system.

[0045] The signal modulation method of this scheme can be used for but not limited to multiple communication transmission networks and systems, such as direct modulation and direct detection systems, coherent optical transmission systems, visible light transmission systems, optical wireless communication systems, mobile front-end networks and other communication systems, which expands the signal transmission path and has a wider scope of application.

[0046] In step 4, the quantization level of the discrete multi-carrier real signal after quantization by the Delta-Sigma modulator is an unevenly distributed level.

[0047] The distribution of the quantization levels after quantization conforms to the Gaussian distribution, that is, the number of small levels is larger, and as the level increases, the number of occurrences decreases accordingly.

[0048] Quantization includes two-bit quantization or four-bit quantization. In this solution, there is no restriction on the quantization processing of discrete multi-carrier real-number signals. In this embodiment, a signal distribution diagram output by a Delta-Sigma modulator alone after 2-bit quantization processing is provided, such as Figure 2 As shown; and the signal distribution diagram of the probability folding shaping technology and the Delta-Sigma modulator output, as shown Figure 3 As shown in the figure, CLANS is a specific method of Delta-Sigma modulation, and PS refers to the probability folding shaping technology. It is not difficult to find that the combination of probability folding shaping technology and Delta-Sigma modulator further increases the number of small levels, thereby increasing the Euclidean distance of the signal, improving the signal's anti-noise ability, and optimizing the signal's transmission quality.

[0049] In the present invention, the electronic device includes a central processing unit (CPU), which can perform various appropriate actions and processes according to computer program instructions stored in a read-only memory (ROM) or loaded from a storage unit into a random access memory (RAM). In the RAM, various programs and data required for the operation of the device can also be stored. The CPU, ROM and RAM are connected to each other via a bus. An input / output (I / O) interface is also connected to the bus.

[0050] Multiple components in the device are connected to the I / O interface, including: input units, such as keyboards, mice, etc.; output units, such as various types of displays, speakers, etc.; storage units, such as disks, optical disks, etc.; and communication units, such as network cards, modems, wireless communication transceivers, etc. The communication unit allows the device to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunication networks.

[0051] The processing unit performs the various methods and processes described above, such as steps 1 to 4 of the method of the present invention. For example, in some embodiments, steps 1 to 4 of the method of the present invention may be implemented as a computer software program, which is tangibly contained in a machine-readable medium, such as a storage unit. In some embodiments, part or all of the computer program may be loaded and / or installed on the device via a ROM and / or a communication unit. When the computer program is loaded into the RAM and executed by the CPU, one or more of steps 1 to 4 of the method of the present invention described above may be executed. Alternatively, in other embodiments, the CPU may be configured to execute steps 1 to 4 of the method of the present invention by any other appropriate means (e.g., by means of firmware).

[0052] In the context of the present invention, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or equipment, or any suitable combination of the foregoing. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0053] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A signal modulation method, characterized in that: The method comprises the following steps: Step 1: Get a uniformly distributed signal; Step 2: Convert the uniformly distributed signal into a non-uniformly distributed signal; Step 3: modulate the obtained non-uniformly distributed signal onto each subcarrier of the discrete multi-carrier signal to obtain a discrete multi-carrier real signal carrying the non-uniform signal; Step 4: Processing the obtained discrete multi-carrier real signal through a Delta-Sigma modulator, and transmitting the processed signal through a transmission system; In step 2, the uniform signal is converted into a non-uniform signal by using a probability folding forming technique; In step 4, the processing of discrete multi-carrier real-number signals by the Delta-Sigma modulator includes noise compression processing and signal quantization processing.

2. A signal modulation method according to claim 1, characterized in that: The uniformly distributed signal in step 1 is obtained by quadrature amplitude modulation or pulse amplitude modulation.

3. A signal modulation method according to claim 1, characterized in that: The transmission system in step 4 includes a direct adjustment and direct detection system, a coherent optical transmission system, a visible light transmission system or a wireless communication over fiber system.

4. A signal modulation method according to claim 1, characterized in that: In step 4, the quantization level of the discrete multi-carrier real signal after quantization by the Delta-Sigma modulator is an unevenly distributed level.

5. A signal modulation method according to claim 4, characterized in that: The distribution of the quantization levels after quantization conforms to the Gaussian distribution, that is, the number of small levels is larger, and as the level increases, the number of occurrences thereof decreases accordingly.

6. A signal modulation method according to claim 4, characterized in that: The quantization includes two-bit quantization or four-bit quantization.

7. An electronic device comprising a memory and a processor, wherein a computer program is stored in the memory, wherein: When the processor executes the program, the method according to any one of claims 1 to 6 is implemented.

8. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and the computer program is executed by a processor to perform the method according to any one of claims 1 to 6.

Images