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Alamouti-Index-Coded PSK Modulation for Priority Ordered Receivers

Sudhakaran, Divya Usha and Rajan, B Sundar (2017) Alamouti-Index-Coded PSK Modulation for Priority Ordered Receivers. In: IEEE Global Communications Conference (GLOBECOM), DEC 04-08, 2017, YourSingapore, Singapore, SINGAPORE.

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Official URL: http://dx.doi.org/10.1109/GLOCOM.2017.8254171


Noisy index coding problem over a Rayleigh fading channel is studied. The receivers are assumed to be priority ordered with each of them equipped with single antenna and the server with two antennas. To obtain diversity gain along with coding gain, a multiple-input multiple-output (MIMO) scheme which employs space time coding along with index coded PSK modulation, is proposed. For a chosen index code, an arbitrary mapping (of broadcast vectors to PSK signal points) and a 2x1 MIMO system employing Alamouti code, a decision rule for the maximum likelihood (ML) decoding is derived. It is shown that, at very high SNR, the message error performance of the receiver employing ML decoder, depends on the metric called minimum inter-set distance, and for the best coding gain at high SNR, the mapping must maximize the minimum inter-set distance.

Item Type: Conference Proceedings
Additional Information: Copy right for this article belong to IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Depositing User: Id for Latest eprints
Date Deposited: 07 May 2018 18:59
Last Modified: 07 May 2018 18:59
URI: http://eprints.iisc.ac.in/id/eprint/59804

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