Optimal Pilot Tones for MIMO Interleaved OFDM Systems

Vinod, TS and Hari, KVS (2004) Optimal Pilot Tones for MIMO Interleaved OFDM Systems. In: IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP '04), 17-21 May, Quebec,Canada, Vol.4, 741-744.

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Abstract

This paper describes a channel estimation scheme for MIMO interleaved orthogonal frequency division multiplexing (IOFDM) systems. The mean square error (MSE) of the proposed scheme is derived, and for the MSE of the channel estimates to be minimized, it is shown in this paper that the pilot tones have to be equispaced in frequency, equipowered, with the entire power being allotted to the pilot tones in one of the P data blocks of an IOFDM block, and the tones in the corresponding positions in the remaining P-1 data blocks being equal to zero. Through simulations, a comparison is made between the proposed training scheme for MIMO-IOFDM and other training sequences, and also between the proposed training scheme and the existing schemes which estimate the channel over P consecutive blocks.

Item Type:	Conference Paper
Publisher:	IEEE
Additional Information:	©1990 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:	16 Jan 2007
Last Modified:	19 Sep 2010 04:22
URI:	http://eprints.iisc.ac.in/id/eprint/4491

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