Joint data detection and dominant singular mode estimation in time varying reciprocal MIMO systems

Prasad, Ranjitha and Bharath, BN and Murthy, Chandra R (2011) Joint data detection and dominant singular mode estimation in time varying reciprocal MIMO systems. In: IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 22-27 May 2011, Prague.

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Abstract

This paper proposes an algorithm for joint data detection and tracking of the dominant singular mode of a time varying channel at the transmitter and receiver of a time division duplex multiple input multiple output beamforming system. The method proposed is a modified expectation maximization algorithm which utilizes an initial estimate to track the dominant modes of the channel at the transmitter and the receiver blindly; and simultaneously detects the un known data. Furthermore, the estimates are constrained to be within a confidence interval of the previous estimate in order to improve the tracking performance and mitigate the effect of error propagation. Monte-Carlo simulation results of the symbol error rate and the mean square inner product between the estimated and the true singular vector are plotted to show the performance benefits offered by the proposed method compared to existing techniques.

Item Type:	Conference Proceedings
Publisher:	IEEE
Additional Information:	Copyright of this article belongs to IEEE.
Keywords:	Joint Channel Estimation and Data Detection; Expectation Maximization; Reciprocal Channels
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	03 Apr 2013 09:10
Last Modified:	03 Apr 2013 09:10
URI:	http://eprints.iisc.ac.in/id/eprint/46187

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