Modulation diversity in fading channels with a quantized receiver

Mohammed, Saif Khan ; Viterbo, Emanuele ; Hong, Yi ; Chockalingam, Ananthanarayanan (2012) Modulation diversity in fading channels with a quantized receiver IEEE Transactions on Wireless Communications, 11 (1). pp. 316-327. ISSN 1536-1276

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Official URL: http://ieeexplore.ieee.org/document/6092795/

Related URL: http://dx.doi.org/10.1109/TWC.2011.111211.110630

Abstract

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:Article
Source:Copyright of this article belongs to Institute of Electrical and Electronics Engineers.
Keywords:Quantization; Modulation Diversity; Fading
ID Code:100603
Deposited On:28 Mar 2017 11:17
Last Modified:28 Mar 2017 11:17

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