ChinaCom2009-Signal Processing for Communications Symposium

Research Article

Distributed Beamforming in Multi-User Cooperative Wireless Networks

  • @INPROCEEDINGS{10.1109/CHINACOM.2009.5339833,
        author={Yimin Zhang and Xin Li and Moeness Amin},
        title={Distributed Beamforming in Multi-User Cooperative Wireless Networks},
        proceedings={ChinaCom2009-Signal Processing for Communications Symposium},
        keywords={Cooperative wireless networks distributed beamforming amplify-and-forward relay source selection sum capacity.},
  • Yimin Zhang
    Xin Li
    Moeness Amin
    Year: 2009
    Distributed Beamforming in Multi-User Cooperative Wireless Networks
    DOI: 10.1109/CHINACOM.2009.5339833
Yimin Zhang1, Xin Li1, Moeness Amin1
  • 1: Center for Advanced Communications, Villanova University, USA


This paper considers a distributed beamformer across multiple relay nodes in a two-hop cooperative wireless network that involves multiple concurrent source-destination pairs. Each of the nodes involved in the problem, including source, relay, and destination nodes, is assumed to use a single antenna. The focus of this paper is the optimization of the relay weights that maximize the sum capacity of the wireless network. A simple solution for the determination of relay weights is provided to yield nearly optimum network capacity. Simulation results validate that, in the presence of a high number of relay nodes, the average network capacity achieved through the concurrent transmission of multiuser streams exceeds that achieved by TDMA and singleuser transmission with opportunistic source selection schemes.