Title :
Robust Transceiver Optimization for Downlink Multiuser MIMO Systems with Bounded Channel Uncertainties
Author :
Yu Bin ; Liu YongJun ; Hu Hanying
Author_Institution :
Dept. of Commun. Eng., ZhengZhou Inf. Sci. & Technol. Inst., Zhengzhou, China
Abstract :
This paper investigates the uplink-downlink duality under bounded channel uncertainties in the multiuser multi-input multi-output (MIMO) systems. In contrast to the perfect channel state information (CSI) case where the precise signal-to-interference-plus-noise ratio (SINR) duality is considered, the worst-case SINR duality is established under the norm-bounded error (NBE) model. With the aids of this duality, a new scheme is proposed for the robust transceiver design in multiuser MIMO downlink. Compared with the exiting robust algorithm, the proposed algorithm has lower complexity, and exhibits the same performance in simulations.
Keywords :
MIMO communication; multiuser channels; optimisation; radio transceivers; radiofrequency interference; CSI; NBE model; SINR duality; bounded channel uncertainty; downlink Multiuser MIMO systems; multiuser multi-input multi-output system; norm-bounded error model; perfect channel state information; robust transceiver optimization design; signal-to-interference-plus-noise ratio duality; uplink-downlink duality; Downlink; Interference; Optimization; Robustness; Signal to noise ratio; Transceivers;
Conference_Titel :
Engineering and Technology (S-CET), 2012 Spring Congress on
Conference_Location :
Xian
Print_ISBN :
978-1-4577-1965-3
DOI :
10.1109/SCET.2012.6342129
