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Conference Paper Efficient Transmit Antenna Selection for Correlated MIMO Channels
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Authors
Hyung Soo Kim, Hyoun Kuk Kim, Nam Shik Kim, Hyun Cheol Park, Seok Seo, Jin Kyu Choi
Issue Date
2009-04
Citation
Wireless Communications and Networking Conference (WCNC) 2009, pp.1-5
Language
English
Type
Conference Paper
DOI
https://dx.doi.org/10.1109/WCNC.2009.4917704
Project Code
08MR5400, Research on environment-adaptive autonomous technologies for mobile wireless access, Kim Jinup
Abstract
While multiple-input multiple-output (MIMO) system gives many advantages to wireless communication, the complexity of multiple RF chains gives a burden to the system. Antenna selection is introduced as a technique to reduce the burden. On the transmit antenna selection scheme, the exhaustive search for optimal antenna set quickly becomes impractical as adopting more antennas. To reduce complexity for searching, we propose an efficient transmit antenna selection method. We first make a threshold for optimal antenna set by using Poincare separation theorem. Instead of exhaustive search, we select a transmit antenna subset that exceeds the threshold. On the exponentially correlated channel of array antennas, we give an order to search for reducing complexity further. We search from the most remotely located antenna subset which in generally less correlated to the closely located antennas which is more correlated. Finally, we show the BER performance and tradeoff relation between performance and complexity by Monte-Carlo simulations. © 2009 IEEE.
KSP Keywords
Antenna Subset, Antenna selection scheme, Array antenna, BER performance, MIMO channel, Monte-Carlo simulation(MCS), Multiple-input multiple-output (MIMO) systems, RF chain, Selection method, Tradeoff relation, Transmit antenna selection