Paper Info
Title
Channel Compensation for Reciprocal TDD Massive MIMO-OFDM With IQ Imbalance.
Abstract
Massive multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems are sensitive to in-phase and quadrature (IQ) imbalances, which destroys the reciprocity of time-division duplex (TDD) uplink/downlink channels with potentially large performance degradation. In this letter, we investigate the compensation of channel reciprocity for TDD massive MIMO-OFDM systems in the presence of IQ imbalances at both the transmitter and receiver. A frequency-domain compensation scheme is proposed, which uses compensation matrices to precode uplink and downlink transmissions. By disassembling the effective channel model into pairs of mirror subcarriers and utilizing block matrix inversion, the compensation matrices can be calculated with a complexity that is linear in the number of antennas at the base station and mobile station. Simulations verify the effectiveness of the proposed scheme.
Year
DOI
Venue
2017
10.1109/LWC.2017.2740936
IEEE Wireless Commun. Letters
Keywords
Field
DocType
Downlink,Uplink,MIMO,Antennas,Frequency-domain analysis,OFDM
MIMO-OFDM,Base station,Transmitter,Mobile station,MIMO,Communication channel,Computer network,Electronic engineering,Mathematics,Orthogonal frequency-division multiplexing,Telecommunications link
Journal
Volume
Issue
ISSN
6
6
2162-2337
Citations 
PageRank 
References 
0
0.34
10
Authors
5
Name
Order
Citations
PageRank
Yan Liang102.70
Hongbin Li213711.40
Fei Li336.16
Rongfang Song415925.85
Lihua Yang523633.24