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Relay Pre-Selection for Reducing CSI Transmission in Wireless Sensor Networks


Abstract:

Relay selection requires collection and transmission of channel state information (CSI) to a central node. When all relay nodes contribute in CSI transmission, the amount...Show More

Abstract:

Relay selection requires collection and transmission of channel state information (CSI) to a central node. When all relay nodes contribute in CSI transmission, the amount of power required for signaling the CSIs linearly increases with the number of relays. A central node should determine the proper number of pre-selected relays by aid of channel statistics and a decision criterion. We derive an upper bound on this number when end-to-end bit error rate is considered as the decision criterion and the source-relay channels are time-varying fading channels.
Published in: IEEE Communications Letters ( Volume: 20, Issue: 9, September 2016)
Page(s): 1828 - 1831
Date of Publication: 21 June 2016

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