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Massive MIMO Performance with Imperfect Channel Reciprocity and Channel Estimation Error

Mi, De, Dianati, Mehrdad, Zhang, Lei, Muhaidat, S and Tafazolli, Rahim (2017) Massive MIMO Performance with Imperfect Channel Reciprocity and Channel Estimation Error IEEE Transactions on Communications, 65 (9). pp. 3734-3749.

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Abstract

Channel reciprocity in time-division duplexing (TDD) massive MIMO (multiple-input multiple-output) systems can be exploited to reduce the overhead required for the acquisition of channel state information (CSI). However, perfect reciprocity is unrealistic in practical systems due to random radio-frequency (RF) circuit mismatches in uplink and downlink channels. This can result in a significant degradation in the performance of linear precoding schemes which are sensitive to the accuracy of the CSI. In this paper, we model and analyse the impact of RF mismatches on the performance of linear precoding in a TDD multi-user massive MIMO system, by taking the channel estimation error into considerations. We use the truncated Gaussian distribution to model the RF mismatch, and derive closed-form expressions of the output SINR (signal-to-interference-plus-noise ratio) for maximum ratio transmission and zero forcing precoders. We further investigate the asymptotic performance of the derived expressions, to provide valuable insights into the practical system designs, including useful guidelines for the selection of the effective precoding schemes. Simulation results are presented to demonstrate the validity and accuracy of the proposed analytical results.

Item Type: Article
Subjects : Electronic Engineering
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :
NameEmailORCID
Mi, Dedm00187@surrey.ac.ukUNSPECIFIED
Dianati, MehrdadM.Dianati@surrey.ac.ukUNSPECIFIED
Zhang, Leilei.zhang@surrey.ac.ukUNSPECIFIED
Muhaidat, SUNSPECIFIEDUNSPECIFIED
Tafazolli, RahimR.Tafazolli@surrey.ac.ukUNSPECIFIED
Date : 1 March 2017
Identification Number : 10.1109/TCOMM.2017.2676088
Copyright Disclaimer : © 2107 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Uncontrolled Keywords : Massive MU-MIMO, linear precoding, channel reciprocity error, RF mismatch, imperfect channel estimation
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 09 May 2017 13:30
Last Modified : 20 Sep 2017 14:49
URI: http://epubs.surrey.ac.uk/id/eprint/814131

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