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Channel Estimation for Multicell Multiuser Massive MIMO Uplink Over Rician Fading Channels

Wu, Liang, Zhang, Zaichen, Dang, Jian, Wang, Jiangzhou, Liu, Huaping, Wu, Yongpeng (2017) Channel Estimation for Multicell Multiuser Massive MIMO Uplink Over Rician Fading Channels. IEEE Transactions on Vehicular Technology, 66 (10). pp. 8872-8882. ISSN 0018-9545. E-ISSN 1939-9359. (doi:10.1109/TVT.2017.2698833) (KAR id:61566)

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http://dx.doi.org/10.1109/TVT.2017.2698833

Abstract

Pilot contamination (PC) is a major problem in massive multiple-input multiple-output (MIMO) systems. This paper proposes a novel channel estimation scheme for such a system in Rician fading channels. First, the possible angle of arrivals (AOAs) of users served by a base station (BS) are derived by exploiting the channel statistical information, assuming a traditional pilot structure, where the pilots for the same-cell users are orthogonal but are identical for the same-indexed users from different cells. Although with this pilot structure the channel state information (CSI) derived contains CSI from other-cell users caused by PC, the line-of-sight (LOS) component of the desired user is PC-free when the number of antennas equipped at the BS is large. Then, based on the AOAs and the contaminated CSI, the LOS component of each user served by a BS is estimated, and data are detected by using the derived LOS components. Finally, the decoded data are used to update the CSI estimate via an iterative process. The achievable spectral efficiency of the proposed scheme is analyzed in detail, and simulation results are presented to compare the performance of the proposed scheme with that of three existing schemes.

Item Type: Article
DOI/Identification number: 10.1109/TVT.2017.2698833
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Engineering and Digital Arts
Depositing User: Jiangzhou Wang
Date Deposited: 26 Apr 2017 15:50 UTC
Last Modified: 16 Feb 2021 13:45 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/61566 (The current URI for this page, for reference purposes)
Wang, Jiangzhou: https://orcid.org/0000-0003-0881-3594
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