Title :
Outage Analysis of Underlay Cognitive Multiple Relays Networks with a Direct Link
Author :
Haiyan Huang ; Zan Li ; Jiangbo Si ; Rui Gao
Author_Institution :
Integrated Service Networks Lab., Xidian Univ., Xi´an, China
Abstract :
In this letter, exact outage probability of decode-and-forward (DF) and incremental DF (IDF) relaying are respectively derived over underlay cognitive relay networks. Particularly, we consider both the direct link and the primary user´s (PU´s) interference with multiple available relays. Moreover, to reveal additional insights into the performance of DF and IDF relaying, the outage gap between the two schemes is theoretically evaluated. Finally, simulation results validate our analytical studies.
Keywords :
cognitive radio; decode and forward communication; probability; radio links; radiofrequency interference; relay networks (telecommunication); IDF relaying; decode-and-forward; direct link; exact outage probability; incremental DF relaying; outage analysis; primary user interference; underlay cognitive multiple relays network; Closed-form solutions; Decoding; Fading; Interference; Relays; Signal to noise ratio; Simulation; Cognitive relay networks; incremental DF relaying; outage probability;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2013.070113.130908
