abstract

• A novel antenna selection scheme is introduced in conjunction with a partial linear precoding technique for downlink and point-to-point multiple input multiple output (MIMO) systems. The proposed technique outperforms conventional channel inversion (CI) linear precoding by utilizing part of the existing inter-channel interference (ICI) between the MIMO sub-channels. It applies partial sub-channel orthogonalization in contrast to the full decorrelation of the channels attained by conventional CI. This yields an increased signal to interference-plus-noise ratio (SINR) to the multiantenna receiver, without investing additional transmitted signal power at the multi-antenna transmitter. This benefits performance and throughput in a variety of transmission scenarios. However, the focus of this paper is on transmit antenna selection where a customized selection criterion is introduced that enhances the residue-interference optimization. Comparative simulations to conventional schemes are presented to illustrate the superiority of the proposed technique. © 2009 IEEE.

authors

• Alsusa E.
• Masouros C.
• Pineda Rico Ulises

publication date

• 2009-01-01

published in

• IEEE Wireless Communications and Networking Conference, WCNC  Proceedings

keywords

• Adaptive signal processing; Antenna selection; Channel inversion; MIMO systems; Precoding Adaptive signal processing; Antenna selection; Channel inversion; Comparative simulation; Conventional schemes; Decorrelations; Interchannel interference; Linear pre-coding; Multi-antenna receivers; Multi-antenna transmitters; Multiple-input-multiple-output systems; Orthogonalization; Precoding; Selection criteria; Signal-to-interference-plus-noise ratio; Subchannels; Transmit antenna selection; Transmitted signal; Antennas; Cellular radio systems; Decoding; MIMO systems; Signal processing; Signal receivers; Transmitters; Wireless networks; Multiplexing

Digital Object Identifier (DOI)

• 10.1109/WCNC.2009.4918000

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