电讯技术2016，Vol.56Issue(8)：833-838,6.DOI:10.3969/j.issn.1001-893x.2016.08.001
基于确定性观测的压缩感知MIMO信道参数反馈
Compressed Sensing MIMO Channel Parameters Feedback Based on Deterministic Observation
摘要
Abstract
In bandwidth-limited or power-limited wireless communication system,how to more effectively compress and feedback the multipath channel state information ( CSI) obtained from the receiver is a hot topic in CSI feedback field. In consideration of existing feedback methods of CSI in multiple-input multi-ple-output( MIMO) system,large storage space is indispensable for compressed sensing with random obser-vation. This paper proposes a new CSI feedback method for MIMO multipath channel based on the deter-ministic observation of compressed sensing. CSI estimated by the receiver is observed by deterministic Go-lay measurement matrix,and a part of observation values are fed back to the transmitter. Then,CSI can be recovered completely through reconstruction algorithm at transmitter. Simulation results show that in com-parison with random observation matrix,the Golay observation matrix needs more observations slightly,but the required memory is much less. And CSI can be reconstructed as good as random observation matrix. Using deterministic Golay observation matrix can greatly reduce system overhead and improve spectrum effi-ciency and system performance.关键词
多径信道/压缩感知/多输入多输出/确定性观测/信道参数反馈Key words
multipath channel/compressed sensing/multiple-input multiple-output/deterministic observa-tion/channel parameters feedback分类
信息技术与安全科学引用本文复制引用
余鹏,姚志强,朱蕾,王万蕾..基于确定性观测的压缩感知MIMO信道参数反馈[J].电讯技术,2016,56(8):833-838,6.基金项目
国家自然科学基金资助项目(61372127) Foundation Item:The National Natural Science Foundation of China(No.61372127) （61372127）
