Max-min relay selection for legacy amplify-and-forward systems with interference
- 23 June 2009
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Wireless Communications
- Vol. 8 (6), 3016-3027
- https://doi.org/10.1109/twc.2009.080383
Abstract
In this paper, an amplify-and-forward (AF) cooperative strategy for interference limited networks is considered. In contrast to previously reported work, where the effect of interference is ignored, the effect of multi-user interference in AF schemes is analyzed. It is shown that the interference changes the statistical description of the conventional AF protocol and a statistical expression is subsequently derived. Asymptotic analysis of the expression shows that interference limits the diversity gain of the system and the related channel capacity is bounded by a stationary point. In addition, it is proven that previously proposed relay selection criteria for multi-relay scenarios become inefficient in the presence of interference. Based on consideration of the interference term, two extensions to the conventional max-min selection scheme suitable for different system setups are proposed. The extensions investigated are appropriate for legacy architectures with limitations on their flexibility where the max-min operation is pre-designed. A theoretical framework for selecting when to apply the proposed selection criteria is also presented. The algorithm investigated is based on some welldefined capacity approximations and incorporates the outage probabilities averaged over the fading statistics. Analytical results and simulation studies reveal enhancements of the proposed algorithm.Keywords
This publication has 31 references indexed in Scilit:
- Performance analysis of single relay selection in rayleigh fadingIEEE Transactions on Wireless Communications, 2008
- Cooperative Communications with Outage-Optimal Opportunistic RelayingIEEE Transactions on Wireless Communications, 2007
- Distributed Space-Time Coding in Wireless Relay NetworksIEEE Transactions on Wireless Communications, 2006
- Multiuser detection for cooperative networks and performance analysisIEEE Transactions on Signal Processing, 2006
- Virtual MIMO-based cross-layer design for wireless sensor networksIEEE Transactions on Vehicular Technology, 2006
- Capacity bounds for Cooperative diversityIEEE Transactions on Information Theory, 2006
- ON THE PRODUCT AND RATIO OF GAMMA AND WEIBULL RANDOM VARIABLESEconometric Theory, 2006
- Diversity and multiplexing: a fundamental tradeoff in multiple-antenna channelsIEEE Transactions on Information Theory, 2003
- On the white Gaussian multiple-access relay channelPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Writing on dirty paper (Corresp.)IEEE Transactions on Information Theory, 1983