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Modulation Diversity in Fading Channels with a Quantized Receiver

Mohammed, Saif Khan and Viterbo, Emanuele and Hong, Yi and Chockalingam, Ananthanarayanan (2012) Modulation Diversity in Fading Channels with a Quantized Receiver. In: IEEE Transactions on Wireless Communications, 11 (1). pp. 316-327.

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In this paper, we address the design of codes which achieve modulation diversity in block fading single-input single-output (SISO) channels with signal quantization at the receiver. With an unquantized receiver, coding based on algebraic rotations is known to achieve maximum modulation coding diversity. On the other hand, with a quantized receiver, algebraic rotations may not guarantee gains in diversity. Through analysis, we propose specific rotations which result in the codewords having equidistant component-wise projections. We show that the proposed coding scheme achieves maximum modulation diversity with a low-complexity minimum distance decoder and perfect channel knowledge. Relaxing the perfect channel knowledge assumption we propose a novel channel training/estimation technique to estimate the channel. We show that our coding/training/estimation scheme and minimum distance decoding achieves an error probability performance similar to that achieved with perfect channel knowledge.

Item Type: Journal Article
Publication: IEEE Transactions on Wireless Communications
Publisher: IEEE
Additional Information: Copyright 2012 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: Modulation diversity;fading;quantization
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 24 Feb 2012 11:53
Last Modified: 24 Feb 2012 11:53
URI: http://eprints.iisc.ac.in/id/eprint/43687

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