Title :
Receive antenna selection for MIMO-SM systems with linear MMSE receivers in the presence of unknown interference
Author :
Lin, Zhiwei ; Premkumar, A.B. ; Madhukumar, A.S.
Author_Institution :
Inst. for Infocomm Res.
Abstract :
In this paper, a novel receive antenna subset selection technique is proposed for multiple input multiple output spatial multiplexing (MIMO-SM) systems with linear minimum mean square error (MMSE) receivers in the presence of unknown co-channel interference. This antenna selection technique is directly implemented based on training sample sequence by utilizing backward greedy algorithm (BGA) under the least squares (LS) criterion. In the case of practical implementation. Diagonal loading (DL) technique is incorporated into the selection process to insure robustness of antenna selection given limited training sample support. Simulation results show that the proposed antenna selection technique is able to retain the diversity order of a full complexity system in the presence of unknown multiple access interference (MAI)
Keywords :
MIMO communication; antenna arrays; cochannel interference; computational complexity; diversity reception; greedy algorithms; least mean squares methods; multi-access systems; multiplexing; receiving antennas; MIMO-SM systems; backward greedy algorithm; diagonal loading technique; diversity order; linear MMSE receivers; linear minimum mean square error; multiple input multiple output spatial multiplexing; receive antenna selection; unknown cochannel interference; unknown multiple access interference; Adaptive arrays; Computational complexity; Fading; Greedy algorithms; Least squares methods; MIMO; Multiple access interference; Radio frequency; Receiving antennas; Wireless communication;
Journal_Title :
Wireless Communications, IEEE Transactions on
DOI :
10.1109/TWC.2007.05427
