Title :
Exact outage probability of cognitive AF relaying with underlay spectrum sharing
Author :
Duong, T.Q. ; Bao, Vo ; Zepernick, Hans-Jurgen
Author_Institution :
Blekinge Inst. of Technol., Karlskrona, Sweden
Abstract :
The exact closed-form expression for the outage probability (OP) of cognitive radio dual-hop amplify-and-forward (AF) relay networks is derived. The tractable expression of the OP, given in the form of elementary functions, readily enables evaluating the effect of primary users on the secondary system performance. It has been shown that the use of AF relaying significantly improves the performance of cognitive radio networks compared to its direct transmission counterpart.
Keywords :
amplify and forward communication; cognitive radio; probability; radio spectrum management; relays; cognitive AF relaying; cognitive radio dual-hop amplify-and-forward relay network; direct transmission counterpart; elementary function; exact outage probability; secondary system performance; underlay spectrum sharing;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2011.1605