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Chaotic baseband wireless communication decoding method based on genetic optimization support vector machine

A support vector machine and wireless communication technology, applied in the direction of genetic rules, transmission modification based on link quality, kernel method, etc., can solve the problems of complex symbol decoding process and low work efficiency, and achieve simplified symbol decoding process and lower structure Risk, the effect of reducing bit error rate

Active Publication Date: 2021-04-09
XIAN UNIV OF TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of chaotic baseband wireless communication decoding method based on genetic optimization support vector machine, which solves the problem of complex symbol decoding process and low work efficiency in the chaotic baseband wireless communication system of the prior art

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  • Chaotic baseband wireless communication decoding method based on genetic optimization support vector machine
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  • Chaotic baseband wireless communication decoding method based on genetic optimization support vector machine

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Embodiment Construction

[0025] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] refer to figure 1 , in a chaotic baseband wireless communication system, the binary symbol information s n After the chaotic shaping filter, the chaotic signal x(t) is obtained as the baseband signal; after the upload frequency, the transmitted signal is transmitted through the wireless channel, and the impulse response of the channel is represented by h(t), and the receiving end obtains the received baseband signal through the download frequency is r(t), the received baseband signal r(t) is sent to the matched filter for filtering, and the output signal of the filter is y(t). Based on the above structure, the method of the present invention regards the symbol decoding process as a binary classification problem from the perspective of pattern recognition, trains a classification model, and will affect the sampling of the matched filte...

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Abstract

The invention discloses a chaotic baseband wireless communication decoding method based on a genetic optimization support vector machine. The method comprises the following steps: 1, carrying out communication setting and initialization; 2, after an initial population of the genetic algorithm is generated, initializing a population algebra k to be equal to 0; 3, solving a support vector machine classification model, evaluating individual fitness, storing an optimal individual and an optimal classifier, and judging whether the optimal individual fitness reaches a target value or not or whether the number k of iterations reaches the maximum algebra or not; 4, selecting, crossing and mutating a genetic algorithm to generate a new population, and turning to the step 3; step 5, carrying out symbol decoding by using an optimal classifier; 6, if n is smaller than LF-3, enabling n=n+1, and executing the step 5, or otherwise, turning to step 7; 7, enabling Fr = Fr+1, and turning to the step 2 if Fr is less than NF being the total frame number of transmission data, otherwise, ending the process, and finishing all decoding. According to the method, direct decoding can be carried out without channel information, and the decoding process is simplified.

Description

technical field [0001] The invention belongs to the technical field of machine learning and wireless communication, and relates to a chaotic baseband wireless communication decoding method based on a genetic optimization support vector machine. Background technique [0002] In recent years, since chaos has been successfully applied to optical fiber communication channels and achieved higher transmission bit rates, the research focus of chaotic communication has also shifted from channels with Gaussian noise to actual communication channels with complex constraints. Research results in recent years have shown that chaotic shaping filters replace traditional shaping filters to generate chaotic baseband signals for digital communication. Good application prospects, combined with the latest 5G communication technology such as OFDM, can obtain better communication effects. [0003] The chaotic baseband wireless communication system (CBWCS) can completely eliminate the intersymbo...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L27/00G06K9/62G06N3/12G06N20/10
CPCH04L1/0007H04L27/001G06N3/126G06N20/10G06F18/2411Y02D30/70
Inventor 任海鹏尹慧平李洁姚俊良
Owner XIAN UNIV OF TECH
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