Outage and Diversity of Cognitive Relaying Systems under Spectrum Sharing Environments in Nakagami-m Fading
| Document type: | Journal Articles |
|---|---|
| Article type: | Original article |
| Peer reviewed: | Yes |
| Author(s): | Quang Trung Duong, Daniel Benevides da Costa, Theodoros A. Tsiftsis, Caijun Zhong, Arumugam Nallanathan |
| Title: | Outage and Diversity of Cognitive Relaying Systems under Spectrum Sharing Environments in Nakagami-m Fading |
| Journal: | IEEE Communications Letters |
| Year: | 2012 |
| Volume: | 12 |
| Issue: | 11 |
| ISSN: | 1089-7798 |
| Publisher: | IEEE |
| URI/DOI: | 10.1109/LCOMM.2012.100812.121859 |
| 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, the outage performance of dualhop cooperative spectrum sharing systems with a direct link is investigated. A selection combining receiver is employed at the destination in order to combine the signals received from the decode-and-forward (DF) relay and from the source. Assuming independent non-identically distributed Nakagami-m fading channels, exact and asymptotic closed-form expressions are derived for the outage probability. Our results reveal that the diversity order of the considered system is solely determined by the fading severity parameters of the secondary network, being equal to min(m1, m2) + m0, where m0, m1, and m2 represent the fading severity parameters of the secondary nodes i.e., source→destination, source→relay, and relay→destination links, respectivel |
| Subject: | Telecommunications\General |
