Title :
Simplified Semi-Orthogonal User Selection for MU-MIMO Systems with ZFBF
Author :
Mao, Junling ; Gao, Jinchun ; Liu, Yuanan ; Xie, Gang
Author_Institution :
Beijing Univ. of Posts & Telecommun., Beijing, China
fDate :
2/1/2012 12:00:00 AM
Abstract :
In this letter, we simplify the well-known semi-orthogonal user selection (SUS) algorithm for the multi-user multiple-input multiple-output (MU-MIMO) system with zero-forcing beamforming (ZFBF). Compared with the original SUS algorithm, the proposed user selection algorithm achieves the same performance, but with significantly less complexity. Simulation results show that the proposed algorithm can make a good tradeoff between performance and complexity for the MU-MIMO system with ZFBF.
Keywords :
MIMO communication; array signal processing; multiuser detection; MU-MIMO systems; ZFBF; multiuser multiple input multiple output; semi-orthogonal user selection; zero forcing beamforming; Algorithm design and analysis; Array signal processing; Computational complexity; Downlink; Null space; Vectors; MU-MIMO; low complexity; user selection; zero-forcing beamforming (ZFBF);
Journal_Title :
Wireless Communications Letters, IEEE
DOI :
10.1109/WCL.2012.010912.110119