High-Performance Cooperative Demodulation With Decode-and-Forward Relays
Top Cited Papers
- 16 July 2007
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Communications
- Vol. 55 (7), 1427-1438
- https://doi.org/10.1109/tcomm.2007.900631
Abstract
Cooperative communication systems using various relay strategies can achieve spatial diversity gains, enhance coverage, and potentially increase capacity. For the practically attractive decode-and-forward (DF) relay strategy, we derive a high-performance low-complexity coherent demodulator at the destination in the form of a weighted combiner. The weights are selected adaptively to account for the quality of both source-relay-destination and source-destination links. Analysis proves that the novel coherent demodulator can achieve the maximum possible diversity, regardless of the underlying constellation. Its error performance tightly bounds that of maximum-likelihood (ML) demodulation, which provably quantifies the diversity gain of ML detection with DF relaying. Simulations corroborate the analysis and compare the performance of the novel decoder with existing diversity-achieving strategies including analog amplify-and-forward and selective-relaying.This publication has 11 references indexed in Scilit:
- Modulation and demodulation for cooperative diversity in wireless systemsIEEE Transactions on Wireless Communications, 2006
- Algorithms for the spatial single relay channelPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- Symbol error probabilities for general Cooperative linksIEEE Transactions on Wireless Communications, 2005
- Cooperative Diversity in Wireless Networks: Efficient Protocols and Outage BehaviorIEEE Transactions on Information Theory, 2004
- Multihop Diversity in Wireless Relaying ChannelsIEEE Transactions on Communications, 2004
- Relay-based deployment concepts for wireless and mobile broadband radioIEEE Communications Magazine, 2004
- Coded Cooperation in Wireless Communications: Space-Time Transmission and Iterative DecodingIEEE Transactions on Signal Processing, 2004
- User cooperation diversity-part I: system descriptionIEEE Transactions on Communications, 2003
- End-to-end performance of transmission systems with relays over rayleigh-fading channelsIEEE Transactions on Wireless Communications, 2003
- On the performance of cooperative diversity protocols in practical wireless systemsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003