DocumentCode :
2964198
Title :
Robust Transmit/Receive Beamformer Design and Power Control with Channel Uncertainty in MIMO MC-CDMA System
Author :
Zhao, S.H. ; Chan, S.C.
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ.
fYear :
2006
fDate :
24-27 Sept. 2006
Firstpage :
409
Lastpage :
413
Abstract :
A joint robust transmit and receive beamformers design algorithm for downlink multiple input multiple output multicarrier code-division multiple access (MIMO MC-CDMA) system with imperfect channel station information (CSI) is proposed in this paper. Under a given quality of service (Qos) in term of the signal to interference plus noise ratio (SINR) of all users, the total transmission power is minimized. Robust transmit and receive beamformer design against the uncertainties or errors in CSI is studied in the proposed algorithm. The algorithm is iterative in nature where the transmit beamformers and the receive beamformer s are determined alternately. The transmitter beamforming problem with a given receive beamformer is formulated as a convex programming problem, which can be solved optimally using second order cone programming (SOCP), while the receiver beamforming problem is formulated as a constrained optimization problem, which is finally cast into a standard stochastic robust design problem. The convergence of the algorithm is analyzed and the performance of the proposed algorithm is evaluated by computing simulations
Keywords :
MIMO communication; array signal processing; channel estimation; code division multiple access; interference (signal); iterative methods; power control; quality of service; radio links; telecommunication control; CSI; MC-CDMA; MIMO; Qos; SOCP; channel station information; downlink system; iterative method; multicarrier code-division multiple access system; multiple input multiple output; power control; quality of service; second order cone programming; transmit-receive beamformers design algorithm; Algorithm design and analysis; Iterative algorithms; MIMO; Multicarrier code division multiple access; Noise robustness; Power control; Quality of service; Robust control; Signal to noise ratio; Uncertainty;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Digital Signal Processing Workshop, 12th - Signal Processing Education Workshop, 4th
Conference_Location :
Teton National Park, WY
Print_ISBN :
1-4244-3534-3
Electronic_ISBN :
1-4244-0535-1
Type :
conf
DOI :
10.1109/DSPWS.2006.265421
Filename :
4041098
Link To Document :
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