Paper: | SPCOM-P11.4 |
Session: | Co-operative Communications |
Time: | Friday, May 19, 10:00 - 12:00 |
Presentation: |
Poster
|
Topic: |
Signal Processing for Communication: Distributed and collaborative signal processing |
Title: |
Performance of Amplify-and-Forward and Decode-and-Forward Relaying in Rayleigh Fading with Turbo Codes |
Authors: |
Michael Souryal, National Institute of Standards and Technology, United States; Branimir Vojcic, George Washington University, United States |
Abstract: |
Cooperative transmission, in which a source and relay cooperate to send a message to a destination, can provide spatial diversity against fading in wireless networks. We derive analytical expressions for the error probability of amplify-and-forward (AF), decode-and-forward (DF), and a new hybrid AF/DF relaying protocol, for systems using strong forward error correction in quasi-static Rayleigh fading channels, and these expressions are shown to compare favorably with simulation results using turbo codes. Analytical results include an exact expression for the distribution of the SNR in AF transmission. For the protocols that achieve diversity, the optimum position of the relay is midway between the source and destination, implying that mutual relaying (or partnering) to a common destination is suboptimal. |