Performance analysis of outage-limited multi-access cellular systems with macro-diversity

Authors:
Derrick Wing Kwan Ng;Vincent K. N. Lau
Affiliations:
Department of Electrical and Computer Engineering, University of British Columbia, Vancouver, British Columbia, Canada;Department of Electronic and Computer Engineering, Hong Kong University of Science and Technology, Kowloon, Hong Kong
Venue:
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Year:
2009

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Abstract

In this paper, we shall analysis the uplink system goodput (bits/sec/Hz successfully decoded) and per-user packet outage in a cellular network using multi-user detection with successive interference cancellation (MUD-SIC). Slow fading channels and interference cancellation error occurs due to packet outage in each decoding stage are considered. We are interested to study the roles of macro-diversity, decoding order and power allocation on the MUD-SIC performance where the effect of potential error-propagation during the SIC detection is taken into account. Based on the information theoretical framework, we derive the closed-form expressions on the total system goodput as well as the per-user packet outage probability. We show that the system goodput does not scale with SNR due to mutual interference in the SIC process and macro-diversity (MDiv) could alleviate the problem and benefit to the system goodput.