DocumentCode :
1280592
Title :
Interference MIMO Relay Channel: Joint Power Control and Transceiver-Relay Beamforming
Author :
Khandaker, Muhammad R A ; Rong, Yue
Author_Institution :
Dept. of Electr. & Comput. Eng., Curtin Univ., Bentley, WA, Australia
Volume :
60
Issue :
12
fYear :
2012
Firstpage :
6509
Lastpage :
6518
Abstract :
In this paper, we consider an interference multiple-input multiple-output (MIMO) relay system where multiple source nodes communicate with their desired destination nodes concurrently with the aid of distributed relay nodes all equipped with multiple antennas. We aim at minimizing the total source and relay transmit power such that a minimum signal-to-interference-plus-noise ratio (SINR) threshold is maintained at each receiver. An iterative joint power control and beamforming algorithm is developed to achieve this goal. The proposed algorithm exploits transmit-relay-receive beamforming technique to mitigate the interferences from the unintended sources in conjunction with transmit power control. In particular, we apply the semidefinite relaxation technique to transform the relay transmission power minimization problem into a semidefinite programming (SDP) problem which can be efficiently solved by interior point-based methods. Numerical simulations are performed to demonstrate the effectiveness of the proposed iterative algorithm.
Keywords :
MIMO communication; array signal processing; diversity reception; interference suppression; iterative methods; minimisation; multifrequency antennas; power control; radio transceivers; wireless channels; destination node; distributed relay node; interference MIMO relay channel; interferences mitigation; interior point-based method; iterative algorithm; iterative joint power control; joint power control; multiantenna; multiple input multiple output; numerical simulation; relay transmission power minimization problem; semidefinite programming; semidefinite relaxation technique; source node communication; source transmit power; transceiver relay beamforming; transmit-relay-receive beamforming technique; Array signal processing; Interference; MIMO; Power control; Relays; Signal to noise ratio; Vectors; Beamforming; MIMO relay; interference channel; power control;
fLanguage :
English
Journal_Title :
Signal Processing, IEEE Transactions on
Publisher :
ieee
ISSN :
1053-587X
Type :
jour
DOI :
10.1109/TSP.2012.2217135
Filename :
6295678
Link To Document :
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