A Hybrid Relay Selection Scheme Using Differential Modulation
- 1 April 2009
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
Abstract
In this paper, we propose a hybrid relay selection (HRS) scheme in a general cooperative network using differential modulation. In the HRS scheme, when the destination decodes successfully, the relay nodes will remain silent. Otherwise, optimal relay node has to be determined to make an additional transmission. In this process, all the relays are divided into two groups, referred to as an amplify-and-forward (AAF) relay group and a decode-and-forward (DAF) relay group depending on whether they can decode correctly or not. The relay, which has the maximum signal-to-noise ratio (SNR) at the destination, will be selected from both AAF and DAF relay groups. Simulation results show that the proposed relay selection scheme significantly outperforms the conventional AAF selection in terms of both frame error rate (FER) and throughput, and these performance gains considerably grow as the number of relay nodes increases.Keywords
This publication has 6 references indexed in Scilit:
- An Improved Relay Selection Scheme with Hybrid Relaying ProtocolsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2007
- Improving Amplify-and-Forward Relay Networks: Optimal Power Allocation versus SelectionPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2006
- On Selection Cooperation in Distributed NetworksPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2006
- Differential transmission for amplify-and-forward Cooperative communicationsIEEE Signal Processing Letters, 2005
- Cooperative Diversity in Wireless Networks: Efficient Protocols and Outage BehaviorIEEE Transactions on Information Theory, 2004
- End-to-end performance of transmission systems with relays over rayleigh-fading channelsIEEE Transactions on Wireless Communications, 2003