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ICC
2009
IEEE

Distributed Power Control for Interference-Limited Cooperative Relay Networks

9 years 6 months ago
Distributed Power Control for Interference-Limited Cooperative Relay Networks
— In this paper, a distributed power control algorithm is proposed for wireless relay networks in interference-limited environments. The objective is to minimize the total transmission power while satisfying the signal-to-interference-plus-noise ratio (SINR) requirements. Two forwarding techniques, i.e., decodeand-forward (DF) and amplify-and-forward (AF), are considered. The proposed algorithm only requires locally measured SINR on the relay nodes (RNs) and the destination nodes (DNs), based on which each cooperation unit (defined as one source node (SN) and DN pair with the RN associated to it) iteratively updates the transmission power of the SN and the RN by solving a local optimization problem. We prove that the convergence is guaranteed when the parameters adopted in the algorithm are sufficiently large, and then a parameter adjusting method is also designed. Simulation results indicate that the proposed algorithm converges fast and leads to only 7% more power consumption tha...
Sheng Zhou, Hongda Xiao, Zhisheng Niu
Added 21 May 2010
Updated 21 May 2010
Type Conference
Year 2009
Where ICC
Authors Sheng Zhou, Hongda Xiao, Zhisheng Niu
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