Research Article
Capacity Analysis for a Distributed MIMO-OFDM System in Composite Spatially Correlated Channels
@INPROCEEDINGS{10.1109/CHINACOM.2007.4469582, author={Xiaolin Zhou and Zhaowei Liu and Zongxin Wang and Himal A. Suraweera and Jean Armstrong}, title={Capacity Analysis for a Distributed MIMO-OFDM System in Composite Spatially Correlated Channels}, proceedings={2nd International ICST Conference on Communications and Networking in China}, publisher={IEEE}, proceedings_a={CHINACOM}, year={2008}, month={3}, keywords={distributed MIMO-OFDM; composite channel; spatial correlation}, doi={10.1109/CHINACOM.2007.4469582} }- Xiaolin Zhou
Zhaowei Liu
Zongxin Wang
Himal A. Suraweera
Jean Armstrong
Year: 2008
Capacity Analysis for a Distributed MIMO-OFDM System in Composite Spatially Correlated Channels
CHINACOM
IEEE
DOI: 10.1109/CHINACOM.2007.4469582
Abstract
Distributed antenna systems (DAS) have gained wide spread interest as an efficient means to expand system capacity, decrease transmission power and mitigate inter cell interference. In this paper, a distributed MIMO-OFDM system is studied over composite Rayleigh-lognormal multipath fading channels. Two kinds of information-theoretic capacity measures -- ergodic capacity and outage capacity are evaluated. We also investigate the impact of spatial fading correlation on the capacity. From simulation results, we find that the distributed MIMO-OFDM scheme can bring a certain degree of capacity improvement because of macroscopic shadow fading diversity gain. Moreover, we show that, due to the decrease in spatial fading correlation, the distributed MIMO-OFDM scheme can provide capacity improvement compared with the conventional centralized MIMO-OFDM scheme.
