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Minimum Redundancy for Fir Equalization in Mimo Multicarrier Modulation

Krishna, Vijaya A and Hari, KVS (2004) Minimum Redundancy for Fir Equalization in Mimo Multicarrier Modulation. In: International Conference on Signal Processing and Communications, SPCOM 2004, 11-14th December, Bangalore, India, pp. 545-549.

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In this paper, we consider the problem of achieving zero forcing finite impulse response (ZF-FIR) equalization for multiple input multiple output (MIMO) FTR channels in a multicarrier modulation framework. The blocking process inherent in multicarrier modulation results in a block pseudocirculant reprcsentation of the MIMO FIK channel. When channel information is available at the transmitter, this block pseudocirculant matrix can be rendered FIR invertible by a suitable precoding operation which introduces redundancy at the transmitter. We derive the expression for the minimum redundancy required to achicvc FIR invertibility. It will be seen that the redundancy required is negligible compared to the space-time processing methods, thus supporting higher data rates. Simulation results are provided to demonstrate the effectivcness of the proposed design.

Item Type: Conference Paper
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Additional Information: Copyright 2004 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.
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 22 Aug 2008
Last Modified: 19 Sep 2010 04:35
URI: http://eprints.iisc.ac.in/id/eprint/9815

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