Diversity Analysis of Multi-User Multi-Relay Networks
- 19 May 2011
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Wireless Communications
- Vol. 10 (7), 2380-2389
- https://doi.org/10.1109/twc.2011.042211.110221
Abstract
In this paper, we analyze the diversity order of opportunistic scheduling networks with arbitrary numbers of relays and users. We show that the opportunistic selection of the relay-user pair with the best end-to-end signal-to-noise ratio (SNR) among M relays and N users achieves a diversity order in the range of [M + N, MN + N] for amplify-and-forward (AF) relays and in the range of [N, MN + N] for decode-and-forward (DF) relays. Our analysis reveals that the achievable diversity order with AF relays depends on the relative strength of the source-relay (SR) and relay-destination (RD) links, while the achievable diversity order with DF relays depends on the SR link SNR. Based on our analysis, which is verified by simulation results, we show that, for AF relays, the maximum diversity order of MN + N is achieved if the SR link quality is better than the RD link quality, and, for DF relays, if the SR link is sufficiently strong such that the relays always succeed in decoding.This publication has 17 references indexed in Scilit:
- High-SNR Analysis of Opportunistic Relaying Based on the Maximum Harmonic Mean Selection CriterionIEEE Signal Processing Letters, 2010
- Outage Probability of Multiuser Relay Networks in Nakagami-$m$ Fading ChannelsIEEE Transactions on Vehicular Technology, 2010
- Single and multiple relay selection schemes and their achievable diversity ordersIEEE Transactions on Wireless Communications, 2009
- Efficient Cooperative Diversity Schemes and Radio Resource Allocation for IEEE 802.16jPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2008
- Diversity analysis of space-time coding in cascaded Rayleigh fading channelsIEEE Communications Letters, 2006
- Symbol error probabilities for general Cooperative linksIEEE Transactions on Wireless Communications, 2005
- Limiting analysis of outage probabilities for diversity schemes in fading channelsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2004
- 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
- Order StatisticsWiley Series in Probability and Statistics, 2003