Beamforming Amplify-and-Forward Relay Networks With Feedback Delay and Interference
| Document type: | Journal Articles |
|---|---|
| Article type: | Original article |
| Peer reviewed: | Yes |
| Author(s): | Hoc Phan, Quang Trung Duong, Maged Elkashlan, Hans-Jürgen Zepernick |
| Title: | Beamforming Amplify-and-Forward Relay Networks With Feedback Delay and Interference |
| Journal: | IEEE Signal Processing Letters |
| Year: | 2012 |
| Volume: | 19 |
| Issue: | 1 |
| Pagination: | 16 - 19 |
| ISSN: | 1070-9908 |
| Publisher: | IEEE |
| URI/DOI: | 10.1109/LSP.2011.2175217 |
| ISI number: | 000297583800001 |
| Organization: | Blekinge Institute of Technology |
| Department: | School of Computing (Sektionen för datavetenskap och kommunikation) School of Computing S-371 79 Karlskrona +46 455 38 50 00 http://www.bth.se/com |
| Authors e-mail: | quang.trung.duong@bth.se |
| Language: | English |
| Abstract: | In this letter, we investigate the effect of feedback delay on the performance of a dual-hop amplify-and-forward (AF) relay network with beamforming in the presence of multiple interferers over Rayleigh fading channels. Specifically, we derive closed-form expressions for the outage probability (OP) and the symbol error rate (SER). Furthermore, to render insights into the effect of feedback delay and interference on the network performance, asymptotic OP and SER are also presented. These asymptotic expressions are very tight in the high signal-to-noise ratio regime, readily enabling us to obtain the diversity and coding gains of the considered network. |
| Subject: | Telecommunications\General |
| Keywords: | Amplify-and-forward (AF), beamforming, feedback delay, interference, outage probability, symbol error rate |
