Channel estimation based on distributed compressed sensing in amplify-and-forward relay networks

doi:10.1016/S1005-8885(09)60506-9

中国邮电高校学报(英文) ›› 2010, Vol. 17 ›› Issue (5): 44-49.doi: 10.1016/S1005-8885(09)60506-9

Channel estimation based on distributed compressed sensing in amplify-and-forward relay networks

王东昊¹,贺志强¹,牛凯¹,田宝玉²

1. 北京邮电大学
2.

收稿日期:2010-01-06 修回日期:2010-05-09 出版日期:2010-10-30 发布日期:2010-10-31
通讯作者: 王东昊 E-mail:wdh8467@gmail.com
基金资助:
973 program(2007CB310604)；the National Natural Science Foundation of China (60702048)；863 Program under Grant2009AA01Z233;其他

Channel estimation based on distributed compressed sensing in amplify-and-forward relay networks

School of Information and Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received:2010-01-06 Revised:2010-05-09 Online:2010-10-30 Published:2010-10-31

摘要/Abstract

摘要：

In orthogonal frequency-division multiplexing (OFDM) amplify-and-forward (AF) relay networks, in order to exploit diversity gains over frequency-selective fading channels, the receiver needs to acquire the knowledge of channel state information (CSI). In this article, based on the recent methodology of distributed compressed sensing (DCS), a novel channel estimation scheme is proposed. The joint sparsity model 2 (JSM-2) in DCS theory and simultaneous orthogonal matching pursuit (SOMP) are both introduced to improve the estimation performance and increase the spectral efficiency. Simulation results show that compared with current compressed sensing (CS) methods, the estimation error of our scheme is reduced dramatically in high SNR region while the pilot number is still kept small.

关键词:

channel estimation, DCS, relay networks, SOMP

Abstract:

Key words:

channel estimation, DCS, relay networks, SOMP

参考文献

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Channel estimation based on distributed compressed sensing in amplify-and-forward relay networks

Channel estimation based on distributed compressed sensing in amplify-and-forward relay networks

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