MFSK-OFDM waveform transmission acceleration method and storage medium

Abstract

The invention discloses an MFSK-OFDM waveform transmission acceleration method and a storage medium, and belongs to the technical field of carrier transmission, and the method comprises the following steps: S100, carrying out MFSK modulation on an information sequence of an information source, and then carrying out carrier compression; s200, performing subcarrier mapping on the compressed carrier, and then mapping and distributing the mapped carrier data to a subcarrier group, and performing IFFT (Inverse Fast Fourier Transform) operation; s300, carrier information is extracted through FFT operation, then threshold judgment is carried out on each carrier, the part exceeding the threshold is set as a carrying information group, and the part not exceeding the threshold is set as a non-carrying information group; and S400, carrying out carrier wave de-mapping operation and carrier wave decompression operation on the result groups in sequence, and outputting a final result. According to the method and the device, the compressed packet transmitted data is compressed, 0 and 1 mapping information transmission is carried out on the carriers, data integration is carried out on the subcarriers in the group, and the result is output, so that the overall spectrum utilization rate and the information transmission rate are effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of carrier transmission, and in particular to an MFSK-OFDM waveform transmission speed-up method and a storage medium. Background Art

[0002] When MFSK and OFDM are combined, a subcarrier grouping form is adopted. If the entire available bandwidth for frequency domain transmission is divided into N subcarriers, and the waveform of OFDM-MFSK group modulation is adopted, data is transmitted on only one carrier in the carrier group corresponding to M frequencies, and the overall spectrum utilization is 1 / M. The transmission rate of each group is log2M bit / group, and a single OFDM symbol contains N / M groups, and the transmission rate is log2M*N / M bit / symbol. This form of transmission reduces the transmission rate of the system. In order to eliminate the impact of the reduced transmission rate of communication services caused by MFSK, this paper proposes an OFDM-MFSK waveform that improves the transmission rate. On the basis of basically maintaining the anti-noise capability, it improves the correlation between carriers and improves the transmission rate. Summary of the invention

[0003] The present invention provides a MFSK-OFDM waveform transmission speed-up method and a storage medium, in order to solve the influence of the communication service transmission rate reduction caused by MFSK in the prior art.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] The present invention provides a MFSK-OFDM waveform transmission speed-up method, comprising:

[0006] S100, performing MFSK modulation on the information sequence of the information source, and then performing carrier compression to compress M carriers into log2M carriers;

[0007] S200, the compressed carrier subcarrier mapping, and then the mapped carrier data mapping is assigned to the subcarrier group, IFFT operation, to obtain an output signal;

[0008] S300, after receiving the output signal, the receiving end extracts the carrier information through FFT operation, and then performs threshold judgment on each carrier, setting the part exceeding the threshold as a carrying information group, and setting the part not exceeding the threshold as a non-carrying information group;

[0009] S400: Perform carrier demapping operations and carrier decompression operations on the result groups in sequence, and output a final result.

[0010] On this basis, the present invention can also be improved as follows: in the step S200, before performing subcarrier mapping, a serial-to-parallel conversion operation is also included, and after performing the IFFT operation, a parallel-to-serial conversion operation is also included.

[0011] On this basis, the present invention can also be improved as follows: in the step S300, before performing the FFT operation, a serial-to-parallel conversion operation is also included; in the step S400, before performing the carrier demapping operation, a parallel-to-serial conversion operation is also included.

[0012] On this basis, the present invention can also be improved as follows: in the step S200, after the carrier is compressed, a Gray mapping operation is also included; in the step S400, before the carrier is decompressed, a Gray demapping operation is also included.

[0013] The present invention also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps of the method described above are implemented.

[0014] The beneficial effects provided by the present invention are:

[0015] The present invention provides a MFSK-OFDM waveform transmission speed-up method and storage medium, which effectively improves the overall spectrum utilization and information transmission rate by compressing the data of compressed packet transmission, mapping the carriers to 0 and 1 to transmit information, and integrating the data of the subcarriers in the group to output the results.

[0016] Advantages of additional aspects of the present invention will be given in part in the following description, and in part will become obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structural framework of the transmission speed-up method provided by the present invention;

[0018] Figure 2 A schematic diagram of the simulation results of the anti-noise performance of the transmission speed-up method provided by the present invention;

[0019] Figure 3 A schematic diagram of carrier mapping of the MFSK-OFDM mode 1 grouping scheme of the transmission speed-up method provided by the present invention;

[0020] Figure 4 A schematic diagram of carrier mapping of the transmission speed-up method provided by the present invention;

[0021] Figure 5 The spectrum efficiency simulation result of the transmission speed-up method provided by the present invention;

[0022] Figure 6The transmission rate simulation result of the transmission speed-up method provided by the present invention; DETAILED DESCRIPTION

[0023] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings 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 belong to the protection scope of the present invention.

[0024] like Figure 1 As shown, the present invention provides a method for compressing a carrier to improve the transmission rate of an MFSK-OFDM waveform, comprising:

[0025] S100, performing MFSK modulation on the information sequence of the information source, and then performing carrier compression, compressing M carriers into log2M carriers, reducing carrier occupancy, improving spectrum efficiency, and thus improving transmission rate;

[0026] S200, performing subcarrier mapping on the compressed carrier, and then mapping and distributing the mapped carrier data to the subcarrier group, performing IFFT operation to form an OFDM signal, and obtaining an output signal;

[0027] S300, after receiving the output signal, the receiving end extracts the carrier information through the FFT operation, and then performs a threshold judgment on each carrier. If it exceeds the threshold, it is considered that the carrier carries information 1 and is set as a carrying information group. If it does not exceed the threshold, it is considered that the carrier carries information 0 and is set as a non-carrying information group.

[0028] S400: Perform carrier demapping operations and carrier decompression operations on the result groups in sequence, and output a final result.

[0029] The solution provided by the present invention has the following effects:

[0030] The present invention provides a MFSK-OFDM waveform transmission speed-up method and storage medium, which effectively improves the overall spectrum utilization and information transmission rate by compressing the data transmitted by compressed packets, mapping the carriers to 0 and 1 to transmit information, and integrating the data of the subcarriers in the group to output the results; the simulation results are as follows: Figure 2-Figure 6 As shown, the simulation parameters are shown in Table 1, and the simulation configuration is shown in Table 2

[0031] Table 1

[0032] Parameter Type Parameter settings Channel Type AWGN Modulation MFSK-OFDM Modulation order M 2、4、8 Number of subcarriers 512 Number of simulation symbols 100000 Threshold 0.5 SNR 1：15

[0033] Table 2

[0034]

[0035] Optionally, in some possible implementations, in step S200, before performing subcarrier mapping, a serial-to-parallel conversion operation is also included, and after performing the IFFT operation, a parallel-to-serial conversion operation is also included. In step S300, before performing the FFT operation, a serial-to-parallel conversion operation is also included, and in step S400, before performing the carrier demapping operation, a parallel-to-serial conversion operation is also included. The parallel-to-serial conversion operation and the serial-to-parallel conversion operation are conversions between serial and parallel, which are completed by a serializer and a deserializer. The serial-to-parallel conversion operation can compress data to a smaller transmission bandwidth, thereby increasing the transmission speed and distance; the parallel-to-serial conversion operation can decompose a high-speed serial data stream into multiple parallel data streams to meet different computing requirements.

[0036] Optionally, in some possible implementations, in the step S200, after carrier compression, a Gray mapping operation is also included, and in the step S400, before carrier decompression, a Gray demapping operation is also included, and the Gray mapping operation is used to optimize the output result and improve the correlation between carriers.

[0037] The present invention also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps of the method described above are implemented.

[0038] Optionally, in some possible implementations, all or part of the above implementations may be included.

[0039] It should be understood that in the description of this specification, reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this description, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and some features of different embodiments or examples without contradicting each other.

[0040] Of course, without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these changes and modifications should all fall within the scope of protection of the claims of the present invention.

Claims

1. A method for increasing the transmission speed of MFSK-OFDM waveform, characterized in that: include: S100, performing MFSK modulation on the information sequence of the information source, and then performing carrier compression to compress M carriers into log2M carriers; S200, performing subcarrier mapping on the compressed carrier, and then mapping and distributing the mapped carrier data to the subcarrier group, performing IFFT operation, and obtaining an output signal; S300, after receiving the output signal, the receiving end extracts the carrier information through FFT operation, and then performs threshold judgment on each carrier, setting the part exceeding the threshold as a carrying information group, and setting the part not exceeding the threshold as a non-carrying information group; S400: Perform carrier demapping operations and carrier decompression operations on the result groups in sequence, and output a final result.

2. The MFSK-OFDM waveform transmission speed-up method according to claim 1, characterized in that: In the step S200, before performing subcarrier mapping, a serial-to-parallel conversion operation is also included, and after performing the IFFT operation, a parallel-to-serial conversion operation is also included.

3. The MFSK-OFDM waveform transmission speed-up method according to claim 1, characterized in that: In the step S300, before performing the FFT operation, a serial-to-parallel conversion operation is also included. In the step S400, before performing the carrier demapping operation, a parallel-to-serial conversion operation is also included.

4. The MFSK-OFDM waveform transmission speed-up method according to any one of claims 1 to 3, characterized in that: In the step S200, after the carrier is compressed, a Gray mapping operation is also included. In the step S400, before the carrier is decompressed, a Gray demapping operation is also included.

5. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to claims 1 to 4 are implemented.

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