2nd International ICST Conference on Communications and Networking in China

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
Xiaolin Zhou1,*, Zhaowei Liu1, Zongxin Wang1, Himal A. Suraweera2, Jean Armstrong2,*
  • 1: Department of Communication Science and Engineering Fudan University Shanghai 200433, China
  • 2: Department of Electrical and Computer Systems Engineering Monash University Melbourne, Australia
*Contact email: zhouxiaolin@fudan.edu.cn, jean.armstrong@eng.monash.edu.cn

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.