Journal
IEEE COMMUNICATIONS LETTERS
Volume 15, Issue 7, Pages 710-712Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LCOMM.2011.051011.110426
Keywords
Cognitive relay; lower bound; outage probability; underlay spectrum sharing
Categories
Funding
- National Science Foundation of China (NSFC) [60970041]
- Major Industry-University-Research Institute Project of Guangdong Province, China [2010A090200057]
- Fundamental Research Funds for the Central Universities [10lgzd06]
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The outage performance is investigated for a cognitive relay system with underlay spectrum sharing model. It is shown that the dependence among the received SNRs is introduced due to the interference power constraint. The joint probability of the received SNRs is derived. By considering the dependence for the case of null decoding set, a tight lower bound on the outage probability is obtained. Simulation results are presented to verify the theoretical analyses.
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