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Estimation of MIMO Channel with Imperfect Channel Correlation Information

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Abstract

Conventional channel estimation schemes may require for the transmission of orthogonal pilot signal for each antenna in frequency-division duplex (FDD) transmission systems. It is of great concern to get channel information with an affordable signaling overhead in FDD massive multi-input multi-output (m-MIMO) transmission environments. The signaling overhead for the channel estimation can be reduced by exploiting the channel correlation matrix (CCM) of m-MIMO channel. When the m-MIMO channel is correlated in spatial domain, the channel information can be estimated with reduced pilot signaling overhead. However, the estimation performance may seriously be affected by the accuracy of CCM. In this paper, we investigate the effect of CCM accuracy on the m-MIMO channel estimation and verify it by computer simulation.

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Acknowledgements

This work was supported by Institute for Information & communications Technology Promotion (IITP) grant funded by the Korea government (MSIP) (No.2014-0-00282, Development of 5G Mobile Communication Technologies for Hyper-connected smart services).

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Authors and Affiliations

  1. School of Electrical Engineering and INMC, Seoul National University, P.O. Box 34, Kwanak, Seoul, 151-600, Korea

    Hyoung-Keon Kim, Yong-Suk Byun & Yong-Hwan Lee

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  1. Hyoung-Keon Kim
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  2. Yong-Suk Byun
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  3. Yong-Hwan Lee
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Correspondence to Yong-Hwan Lee.

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Kim, HK., Byun, YS. & Lee, YH. Estimation of MIMO Channel with Imperfect Channel Correlation Information. Wireless Pers Commun 95, 3377–3389 (2017). https://doi.org/10.1007/s11277-017-4002-0

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