Non-orthogonal pilot pattern for sparse channel estimation in large-scale MIMO-OFDM system

doi:10.1016/S1005-8885(16)60046-8

中国邮电高校学报(英文) ›› 2016, Vol. 23 ›› Issue (4): 63-68.doi: 10.1016/S1005-8885(16)60046-8

Non-orthogonal pilot pattern for sparse channel estimation in large-scale MIMO-OFDM system

徐超,张建华,尹长川

北京邮电大学

收稿日期:2016-05-23 修回日期:2016-07-07 出版日期:2016-08-30 发布日期:2016-08-30
通讯作者: 徐超 E-mail:st_xuchao@bupt.edu.cn

Non-orthogonal pilot pattern for sparse channel estimation in large-scale MIMO-OFDM system

Received:2016-05-23 Revised:2016-07-07 Online:2016-08-30 Published:2016-08-30

摘要/Abstract

摘要： From the perspective of compressed sensing (CS) theory, the channel estimation problem in large-scale multiple input multiple output (MIMO)-orthogonal frequency division multiplexing (OFDM) system is investigated. According to the theory, the smaller mutual coherence the reconstruction matrix has, the higher success probability the estimation can obtain. Aiming to design a pilot that can make the system reconstruction matrix having the smallest mutual coherence, this paper proposes a low complexity joint algorithm and obtains a kind of non-orthogonal pilot pattern. Simulation results show that compared with the conventional orthogonal pilot pattern, applying the proposed pattern in the CS channel estimation can obtain the better normalized mean square error performance. Moreover, the bit error rate performance of the large-scale MIMO-OFDM system is also improved.

关键词: large-scale MIMO, CS channel estimation, pilot pattern

Abstract: From the perspective of compressed sensing (CS) theory, the channel estimation problem in large-scale multiple input multiple output (MIMO)-orthogonal frequency division multiplexing (OFDM) system is investigated. According to the theory, the smaller mutual coherence the reconstruction matrix has, the higher success probability the estimation can obtain. Aiming to design a pilot that can make the system reconstruction matrix having the smallest mutual coherence, this paper proposes a low complexity joint algorithm and obtains a kind of non-orthogonal pilot pattern. Simulation results show that compared with the conventional orthogonal pilot pattern, applying the proposed pattern in the CS channel estimation can obtain the better normalized mean square error performance. Moreover, the bit error rate performance of the large-scale MIMO-OFDM system is also improved.

Key words: large-scale MIMO, CS channel estimation, pilot pattern

Xu Chao, Zhang Jianhua,Yin Changchuan. Non-orthogonal pilot pattern for sparse channel estimation in large-scale MIMO-OFDM system[J]. JOURNAL OF CHINA UNIVERSITIES OF POSTS AND TELECOM, 2016, 23(4): 63-68.

参考文献

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Non-orthogonal pilot pattern for sparse channel estimation in large-scale MIMO-OFDM system

Non-orthogonal pilot pattern for sparse channel estimation in large-scale MIMO-OFDM system

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