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Optimal Training Design for MIMO OFDM Systems in Mobile Wireless Channels

Overview This paper describes a least squares (LS) channel estimation scheme for multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems based on pilot tones. The mean square error (MSE) of the LS channel estimate is first computed and then optimal pilot sequences and optimal placement of the pilot tones with respect to this MSE is derived. It is shown that the optimal pilot sequences are equipowered, equispaced, and phase shift orthogonal. To reduce the training overhead, an LS channel estimation scheme over multiple OFDM symbols is also discussed.

Further White Paper Details
Publisher	Katholieke Universiteit Leuven	File Format	PDF, requires Acrobat Rdr 5
Date Published	June 2003	Downloads	26
Format	White Papers
Topics	Mobile - Wireless Communications, Modems

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