DocumentCode :
1408414
Title :
Advanced Joint Transceiver Design for Block-Diagonal Geometric-Mean-Decomposition-Based Multiuser MIMO Systems
Author :
Liu, Feng ; Jiang, Lingge ; He, Chen
Author_Institution :
Dept. of Electron. Eng., Shanghai Jiao Tong Univ., Shanghai, China
Volume :
59
Issue :
2
fYear :
2010
Firstpage :
692
Lastpage :
703
Abstract :
In this paper, we propose an advanced joint transceiver design for block-diagonal geometric-mean-decomposition (BD-GMD) based multiuser multiple-input-multiple-output (MIMO) systems. First, we use the lattice reduction (LR) method to design the BD-GMD-based advanced detection and precoding for an uplink and a downlink, respectively. Then, we exploit the vector perturbation (VP) technique to further improve the system performance of the multiuser downlink. To directly reduce the high complexity of VP by a sphere encoder, we provide an LR-based sphere encoder and LR-based approximations for perturbation symbols. Performance and complexity analyses are given to show the advantages of the proposed schemes. Particularly, the diversity-gain analysis shows some insights of the existing and proposed schemes. Simulation results verify the performance improvement as well as the theoretical analysis.
Keywords :
MIMO communication; multi-access systems; perturbation techniques; transceivers; vectors; advanced joint transceiver design; block-diagonal geometric-mean-decomposition; lattice reduction method; multiuser MIMO systems; multiuser multiple-input-multiple-output systems; vector perturbation technique; Block-diagonal geometric mean decomposition (BD-GMD); joint transceiver design; lattice reduction (LR); multiuser multiple-input–multiple-output (MIMO) systems; vector precoding;
fLanguage :
English
Journal_Title :
Vehicular Technology, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9545
Type :
jour
DOI :
10.1109/TVT.2009.2032555
Filename :
5247081
Link To Document :
بازگشت