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}, publisher={IEEE}, proceedings_a={CHINACOM2009-SPC}, year={2009}, month={11}, keywords={Cooperative wireless networks distributed beamforming amplify-and-forward relay source selection sum capacity.}, doi={10.1109/CHINACOM.2009.5339833} }- Yimin Zhang
Xin Li
Moeness Amin
Year: 2009
Distributed Beamforming in Multi-User Cooperative Wireless Networks
CHINACOM2009-SPC
IEEE
DOI: 10.1109/CHINACOM.2009.5339833
Abstract
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.