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Mathematical Problems in Engineering
Volume 2014 (2014), Article ID 510423, 11 pages
Research Article

Outage and Capacity Performance Evaluation of Distributed MIMO Systems over a Composite Fading Channel

College of Computer and Information, Hohai University, Nanjing, Jiangsu 211100, China

Received 6 June 2014; Revised 6 September 2014; Accepted 10 September 2014; Published 29 September 2014

Academic Editor: Gerhard-Wilhelm Weber

Copyright © 2014 Wenjie Peng et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The exact closed-form expressions regarding the outage probability and capacity of distributed MIMO (DMIMO) systems over a composite fading channel are derived. This is achieved firstly by using a lognormal approximation to a gamma-lognormal distribution when a mobile station (MS) in the cell is in a fixed position, and the so-called maximum ratio transmission/selected combining (MRT-SC) and selected transmission/maximum ratio combining (ST-MRC) schemes are adopted in uplink and downlink, respectively. Then, based on a newly proposed nonuniform MS cell distribution model, which is more consistent with the MS cell hotspot distribution in an actual communication environment, the average outage probability and capacity formulas are further derived. Finally, the accuracy of the approximation method and the rationality of the corresponding theoretical analysis regarding the system performance are proven and illustrated by computer simulations.