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Reverse Channel Training For Reciprocal Mimo Systems With Spatial Multiplexing

Bharath, BN and Murthy, Chandra R (2009) Reverse Channel Training For Reciprocal Mimo Systems With Spatial Multiplexing. In: IEEE International Conference on Acoustics, Speech and Signal Processing, APR 19-24, 2009, Taipei, Taiwan, pp. 2673-2676.

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Official URL: http://www.computer.org/portal/web/csdl/doi/10.110...

Abstract

This paper investigates the problem of designing reverse channel training sequences for a TDD-MIMO spatial-multiplexing system. Assuming perfect channel state information at the receiver and spatial multiplexing at the transmitter with equal power allocation to them dominant modes of the estimated channel, the pilot is designed to ensure an stimate of the channel which improves the forward link capacity. Using perturbation techniques, a lower bound on the forward link capacity is derived with respect to which the training sequence is optimized. Thus, the reverse channel training sequence makes use of the channel knowledge at the receiver. The performance of orthogonal training sequence with MMSE estimation at the transmitter and the proposed training sequence are compared. Simulation results show a significant improvement in performance.

Item Type: Conference Paper
Additional Information: Copyright 2009 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords: Channel estimation; training sequence design; reciprocity
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 22 Dec 2009 06:05
Last Modified: 22 Dec 2009 06:05
URI: http://eprints.iisc.ernet.in/id/eprint/22955

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