The Effect of User Distribution on a Linear Cellular Multiple-Access Channel

Chatzinotas, S., Imran, M. A. and Tzaras, C. (2008) The Effect of User Distribution on a Linear Cellular Multiple-Access Channel. In: 2008 Third International Conference on Communications and Networking in China (ChinaCom 2008), Hangzhou, China, 25-27 Aug 2008, pp. 95-99. ISBN 9781424423736 (doi:10.1109/CHINACOM.2008.4684977)

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Abstract

The Gaussian cellular multiple-access channel (GCMAC) has been the starting point for studying the Shannon-theoretic limits of cellular systems. In 1994, a simple infinite GCMAC was initially introduced by Wyner and was subsequently extended by researchers to incorporate flat fading environments and power-law path loss models. However, Wyner-like models, preserve a fundamental assumption, namely the symmetry of User Terminals (UTs). In this paper, we investigate the effect of this assumption on the sum-rate capacity limits, by examining the case of distributed and thus asymmetric UTs. The model under investigation is a GCMAC over a linear cellular array in the presence of power-law path loss and flat fading. In this context, we study the effect of UT distribution for cell-centre and cell-edge UTs and we show that its effect is considerable only in the case of low cell density.

Item Type:Conference Proceedings
Additional Information:This research has been funded by the following Industrial Companies who are Members of Mobile VCE - BBC, BT, Huawei, Nokia, Nokia Siemens Networks, Nortel, Vodafone.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Imran, Professor Muhammad
Authors: Chatzinotas, S., Imran, M. A., and Tzaras, C.
College/School:College of Science and Engineering > School of Engineering
ISBN:9781424423736
Published Online:21 November 2008

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