现代电子技术2024，Vol.47Issue(19)：1-7,7.DOI:10.16652/j.issn.1004-373x.2024.19.001
ZP-OTFS系统信道估计的帧平均算法
Frame-averaged algorithm for ZP-OTFS system channel estimation
摘要
Abstract
In scenarios with high mobility,such as vehicle wireless communication and satellite communication,the orthogonal time frequency space(OTFS)modulation has the characteristics of adapting to fast time-varying wireless channels,which makes it one of the candidate technologies for 6G.In view of the high cost for pilot and guard symbols and the insufficient utilization of time-varying channel properties in the embedded-pilot(EP)channel estimation algorithm for zero padding-orthogonal time frequency space(ZP-OTFS)systems,a pilot embedded zero-symbol frame structure assisted frame-averaged channel estimation algorithm(FACEA)is proposed.The channel pre-estimation is performed by a joint threshold decision matrix based on delayed time domain signals,and the pre-estimated matrices of the consecutive multi-frame OTFS signal is averaged,so as to obtain the time domain channel matrix.The simulation results indicate that the algorithm surpasses the existing EP-assisted channel estimation algorithms in terms of performance under high-speed mobility scenarios for end users,and demonstrates better robustness in various fast time-varying channels.Therefore,the proposed algorithm realizes the optimal characteristics of channel estimation in a specific channel.关键词
高速移动通信/正交时频空系统/零填充/嵌入式导频/信道估计/帧平均算法Key words
high mobility communication/OTFS system/ZP/EP/channel estimation/frame-averaged algorithm分类
电子信息工程引用本文复制引用
杨川,常俊,刘夕龙,潘润勇..ZP-OTFS系统信道估计的帧平均算法[J].现代电子技术,2024,47(19):1-7,7.基金项目
国家自然科学基金项目(62002312) （62002312）
云南大学专业学位研究生实践创新基金项目资助(ZC-23234914) （ZC-23234914）
