Title :
Study of total MSE in downlink multiuser MIMO systems with partial channel state information
Author :
Haibo Zheng ; Jing Wang ; Shidong Zhou
Author_Institution :
Naval Aeronaut. Eng. Acad., Qingdao
Abstract :
In this paper, we study the total mean-squared-error (MSE) of zero-forcing algorithm and regularized perturbation scheme with partial channel state information in downlink multiuser MIMO systems. Based on the study, we propose a random vector quantization (RVQ) codebook based TR-MMSE algorithm to reduce user channel state information feedback. Numerical results show that with the same feedback bits the proposed algorithm considerably outperforms the zero- forcing algorithm at all SNRs.
Keywords :
MIMO communication; least mean squares methods; multiuser channels; vector quantisation; MSE; RVQ codebook; TR-MMSE algorithm; downlink multiuser MIMO system; mean-squared-error; partial channel state information; random vector quantization; regularized perturbation scheme; zero-forcing algorithm; MSE; Multiuser MIMO; Partial channel state information; RVQ codebook;
Conference_Titel :
Wireless, Mobile and Sensor Networks, 2007. (CCWMSN07). IET Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-0-86341-836-5
