DocumentCode :
1400273
Title :
Receive antenna selection for closely-spaced antennas with mutual coupling
Author :
Xu, Zhemin ; Sfar, Sana ; Blum, Rick S.
Author_Institution :
Electr. & Comput. Eng. Dept., Lehigh Univ., Bethlehem, PA, USA
Volume :
9
Issue :
2
fYear :
2010
fDate :
2/1/2010 12:00:00 AM
Firstpage :
652
Lastpage :
661
Abstract :
We investigate the achievable rate of receive antenna selection MIMO systems in the presence of mutual coupling and spatial correlation. For that, we assume the antenna array to consist of dipole antennas placed side-by-side in a linear pattern and in a very limited physical space. In a first step, we will assume perfect channel state information at the receiver side only and a negligible training overhead compared with the payload. We will demonstrate that in contrast to what might be expected based on results for cases without mutual coupling, MIMO receive antenna selection can achieve higher data rates than the system using all antennas provided that the total number of receive antennas is larger than a critical value that we will further discuss. We then propose an optimal antenna selection processing that ensures rate maximization regardless of the number of antennas used. In a later step, we will address the impact of training overhead on the system achievable rate when the training overhead is considerable. We will show that such a rate is reduced dramatically due to the large amount of training overhead arising from the presence of mutual coupling. To overcome this problem, we will thus propose a novel channel estimation method, which reduces the training overhead greatly and improves the system achievable rate performance.
Keywords :
MIMO communication; dipole antenna arrays; antenna array; closely-spaced antennas; dipole antennas; mutual coupling; optimal antenna selection processing; perfect channel state information; receive antenna selection MIMO systems; Antenna arrays; Dipole antennas; Fading; Linear antenna arrays; MIMO; Military computing; Mutual coupling; Receiving antennas; Scattering; Turning; Multiple-input multiple-output (MIMO), antenna selection, mutual coupling, training overhead.;
fLanguage :
English
Journal_Title :
Wireless Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
1536-1276
Type :
jour
DOI :
10.1109/TWC.2010.02.080976
Filename :
5403546
Link To Document :
بازگشت