光通信技术2024，Vol.48Issue(3)：79-83,5.DOI:10.13921/j.cnki.issn1002-5561.2024.03.014
基于Gamma-Gamma湍流信道下的卷积码性能研究
Research on the performance of convolutional code based on Gamma-Gamma turbulent channel
摘要
Abstract
In order to investigate the bit error rate(BER)performance of convolutional codes with different code rates in under-water turbulent channels,this paper employs accept-reject sampling to simulate multiplicative interference in turbulent channels.Binary phase shift keying(BPSK)modulation is chosen,and a simulation model of a Gamma-Gamma turbulent channel commu-nication system is established.The simulation results indicate that convolutional coding can improve the BER performance of the system in turbulent channels with different intensities.The smaller the code rate of convolutional code is,the more significant the improvement of system BER performance will be.As the signal-to-noise ratio(SNR)increases,the faster the system BER decreases when the memory depth is longer.Using soft decoding can improve the gain by at least 2.82 dB compared to using hard decoding.The decoding of convolutional codes is not only affected by the current information,but also related to the previous symbol information.关键词
水下光通信/卷积码/Gamma-Gamma信道/误码率Key words
underwater wireless optical communication/convolutional code/Gamma-Gamma channel/bit error rate分类
信息技术与安全科学引用本文复制引用
史为铠,韩朝霞,马占红..基于Gamma-Gamma湍流信道下的卷积码性能研究[J].光通信技术,2024,48(3):79-83,5.基金项目
宁夏自然基金项目(批准号:2022AAC03050)资助 （批准号:2022AAC03050）
宁夏重点研发项目(批准号:2021BEB04040)资助. （批准号:2021BEB04040）
