Max-Max Relay Selection for Relays with Buffers
Top Cited Papers
- 13 January 2012
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Wireless Communications
- Vol. 11 (3), 1124-1135
- https://doi.org/10.1109/twc.2012.011012.110682
Abstract
In this paper, we propose a new relay selection scheme for half-duplex relays with buffers. The proposed scheme is referred to as max-max relay selection (MMRS) since the relays with the best source-relay and the best relay-destination channels are selected for reception and transmission, respectively, which is only possible without data loss if the relays have buffers of infinite size. To relax this idealized assumption, we propose hybrid relay selection (HRS) for relays with buffers of finite size. HRS is a combination of conventional best relay selection (BRS) and MMRS and takes into account both the channel state and the buffer state for relay selection. We provide a comprehensive analysis of the outage and symbol error probabilities of both MMRS and HRS for a decode-and-forward protocol in Rayleigh fading. This analysis reveals that BRS, HRS, and MMRS achieve the same diversity gain. However, for N relays, MMRS achieves a signal-to-noise ratio (SNR) gain of 3(1-1/N) dB compared to BRS, and HRS closely approaches the SNR gain of MMRS for moderate buffer sizes (e.g. 30 transmission intervals).Keywords
This publication has 15 references indexed in Scilit:
- Throughput and Diversity Gain of Buffer-Aided RelayingPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2011
- On the Performance of Cooperative-Diversity Networks with the Nth Best-Relay Selection SchemeIEEE Transactions on Communications, 2010
- Buffering in a Three-Node Relay NetworkIEEE Transactions on Wireless Communications, 2008
- Distributed Transmit Antenna Selection (DTAS) Under Performance or Energy Consumption ConstraintsIEEE Transactions on Wireless Communications, 2008
- Selection cooperation in multi-source cooperative networksIEEE Transactions on Wireless Communications, 2008
- End-to-end performance of transmission systems with relays over rayleigh-fading channelsIEEE Transactions on Wireless Communications, 2003
- Distributed space-time-coded protocols for exploiting cooperative diversity in wireless networksIEEE Transactions on Information Theory, 2003
- A simple and general parameterization quantifying performance in fading channelsIEEE Transactions on Communications, 2003
- Digital Communication Over Fading ChannelsPublished by Wiley ,2002
- Space-time codes for high data rate wireless communication: performance criterion and code constructionIEEE Transactions on Information Theory, 1998