微型电脑应用2025，Vol.41Issue(7)：260-263,4.
基于改进SISO算法的本地网络长距离信号传输损耗优化研究
Research on Local Network Long-distance Signal Transmission Loss Optimization Based on Improved SISO Algorithm
韩峰1
作者信息
- 1. 上海邮电设计咨询研究院有限公司,上海 100070
- 折叠
摘要
Abstract
In order to solve the problems of local network high loss and low efficiency in the long-distance communication of lo-cal network,the optimization method of long-distance signal transmission loss based on improved single input single output(SI-SO)algorithm is studied.The low-density parity-check code(LDPC)coding and Feher quadrature phase shift keying(FQPSK)demodulation system are used to create a coding and demodulation model that optimizes the transmission loss.The signal is encoded by the LDPC encoder in the input end of the model to obtain the signal coding sequence.Then the FQPSK de-modulator generates the demodulated signal and transmits it to the receiver through the optical channel.The receiver uses the FQPSK SISO demodulator to obtain the output probability of the demodulated signal using the SISO algorithm.According to the output probability,the effective codeword is output iteratively through the renote sencing(RS)network to reduce the de-modulation complexity and complete the optimization of the local network long-distance signal transmission loss.The experi-mental results show that when the proposed method iteratively demodulates long-distance signals,the number of iterations is 20,the complexity of the signal demodulation process is reduced,and the transmission loss optimization results of different types of signals are the best.关键词
本地网络/联合编码解调/长距离信号/传输损耗/LDPC编码/FQPSK解调Key words
local network/coding and demodulation/long-distance signal/transmission loss/LDPC code/FQPSK demodula-tion分类
信息技术与安全科学引用本文复制引用
韩峰..基于改进SISO算法的本地网络长距离信号传输损耗优化研究[J].微型电脑应用,2025,41(7):260-263,4.
