光通信研究Issue(3)：31-35,5.DOI:10.13756/j.gtxyj.2024.230048
基于循环前缀的空分复用系统均衡技术研究
Equalization Techniques based on Cyclic Prefix in Space Division Multiplexing Systems
王刘柱 1郑之龙 1薛玉玲 1胡少华 1张静 1邱昆1
作者信息
- 1. 电子科技大学信息与通信工程学院,光纤传感与通信教育部重点实验室,成都 611731
- 折叠
摘要
Abstract
[Objective]In Space Division Multiplexing(SDM)system,in order to achieve mode demultiplexing,it is necessary to adopt Multiple Input Multiple Output(MIMO)equalization scheme at the receiving end.As the number of transmission modes or transmission capacity increases,the computational complexity of MIMO increases significantly,resulting in high power consump-tion.Therefore,it is necessary to reduce the computational complexity of MIMO equalization.[Methods]We propose a frequen-cy-domain joint equalization technique based on Cyclic Prefix(CP)to reduce the complexity compared with a traditional frequency-domain independent equalization and a separate dispersion compensation module in few-mode fiber short-range transmission sys-tems.[Results]Based on the few-mode fiber model in VPI simulation platform,we build a 6×6 few-mode fiber transmission sys-tem to verify the advantage of computational complexity reduction of the proposed technology.The simulation results show that,the performance and computational complexity reduction of different CP ratios are also different.Under the same simulation condi-tions,when the proportion of CP is larger,the reduction of computational complexity is also larger,vice versa.With the same per-formance,the computational complexity of the frequency-domain equalization scheme with CP accounting for 11.11%is only 15.29%of that of the traditional frequency-domain equalization scheme based on block convolution.[Conclusion]Compared with the traditional frequency-domain equalization combined with a separate dispersion compensation module,the proposed frequency-domain equalization with CP has lower computational complexity.关键词
空分复用/频域均衡/循环前缀/计算复杂度Key words
SDM/frequency domain equalization/CP/computational complexity分类
信息技术与安全科学引用本文复制引用
王刘柱,郑之龙,薛玉玲,胡少华,张静,邱昆..基于循环前缀的空分复用系统均衡技术研究[J].光通信研究,2024,(3):31-35,5.
