Research Article
The Effect of User Distribution on a Linear Cellular Multiple-Access Channel
@INPROCEEDINGS{10.1109/CHINACOM.2008.4684977, author={Symeon Chatzinotas and Muhammad Ali Imran and Costas Tzaras}, title={The Effect of User Distribution on a Linear Cellular Multiple-Access Channel}, proceedings={ChinaCom2008-Information and Coding Theory Symposium}, publisher={IEEE}, proceedings_a={CHINACOM2008-ICT}, year={2008}, month={11}, keywords={Multicell Decoding; Cellular Gaussian Multiple-Access Channel; User Distribution}, doi={10.1109/CHINACOM.2008.4684977} }- Symeon Chatzinotas
Muhammad Ali Imran
Costas Tzaras
Year: 2008
The Effect of User Distribution on a Linear Cellular Multiple-Access Channel
CHINACOM2008-ICT
IEEE
DOI: 10.1109/CHINACOM.2008.4684977
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.
