Energy-efficient training for antenna selection in time-varying channels

Kristem, Vinod and Mehta, Neelesh B and Molisch, Andreas F (2011) Energy-efficient training for antenna selection in time-varying channels. In: 2011 Conference Record of the Forty Fifth Asilomar Conference on Signals, Systems and Computers (ASILOMAR), 6-9 Nov. 2011, Pacific Grove, CA.

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Abstract

Training for receive antenna selection (AS) differs from that for conventional multiple antenna systems because of the limited hardware usage inherent in AS. We analyze and optimize the performance of a novel energy-efficient training method tailored for receive AS. In it, the transmitter sends not only pilots that enable the selection process, but also an extra pilot that leads to accurate channel estimates for the selected antenna that actually receives data. For time-varying channels, we propose a novel antenna selection rule and prove that it minimizes the symbol error probability (SEP). We also derive closed-form expressions for the SEP of MPSK, and show that the considered training method is significantly more energy-efficient than the conventional AS training method.

Item Type:	Conference Paper
Publisher:	IEEE
Additional Information:	Copyright of this article belongs to IEEE. USA
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	27 Mar 2013 09:38
Last Modified:	27 Mar 2013 09:38
URI:	http://eprints.iisc.ac.in/id/eprint/46118

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