Time-varying phase noise and channel estimation in MIMO systems
Date
2012
Authors
Mehrpouyan, Hani
Nasir, Ali
Eriksson, Thomas
Blostein, Steven
Karagiannidis, George K
Svensson, Tommy
Journal Title
Journal ISSN
Volume Title
Publisher
Institute of Electrical and Electronics Engineers (IEEE Inc)
Abstract
Performance of high speed communication systems is negatively affected by oscillator phase noise (PN). In this paper joint estimation of channel gains and Wiener PN in multi-input multi-output (MIMO) systems is analyzed. The signal model for the estimation problem is outlined in detail. In order to reduce overhead, a low complexity data-aided least-squares (LS) estimator for jointly obtaining the channel gains and PN parameters is derived. In order to track PN processes over a frame, a new decision-directed extended Kalman filter (EKF) is proposed. Numerical results show that the proposed LS and EKF based PN estimator performances are close to the CRLB and simulation results indicate that by employing the proposed estimators the bit-error rate (BER) performance of a MIMO system can be significantly improved in the presence of PN.
Description
Keywords
Keywords: Channel gains; Data-aided; Decision-directed; Estimation problem; High-speed communication systems; Joint estimation; Least Square; Multi-input multi-output system; Numerical results; Oscillator phase noise; Signal models; Time-varying phase noise; Commun
Citation
Collections
Source
IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
Type
Conference paper
Book Title
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DOI
10.1109/SPAWC.2012.6292972
Restricted until
2037-12-31