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Capacity of Differential Versus Non-Differential Unitary Space-Time Modulation for MIMO Channels

Overview Differential Unitary Space-Time Modulation (DUSTM) and its earlier nondifferential counterpart, USTM, permit high-throughput MIMO communication entirely without the possession of Channel State Information (CSI) by either the transmitter or the receiver. For an isotropically random unitary input the authors obtain the exact closed-form expression for the probability density of the DUSTM received signal, which permits the straightforward Monte Carlo evaluation of its mutual information. This paper compares the performance of DUSTM and USTM through both numerical computations of mutual information and through the analysis of low- and high-SNR asymptotic expressions.

Further White Paper Details
Publisher	Alcatel-Lucent	File Format	PDF
Date Published	January 2004
Format	White Papers
Topics	Mobile - Wireless Communications

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