Title :
Joint sensing time and power allocation in cooperatively cognitive networks
Author :
Zhao, Chengshi ; Kwak, Kyungsup
Author_Institution :
Grad. Sch. of IT & Telecommun., Inha Univ., Incheon, South Korea
fDate :
2/1/2010 12:00:00 AM
Abstract :
The jointly optimal allocation of sensing time and power for a two-user amplify-and-forward overlay cognitive network is developed by maximizing the averaged aggregate throughput of the secondary network. In particular, observing that the sensing duration lies within a strict interval, the jointly optimal strategy of sensing time and power allocation is proved to be tractable by sequential optimization.
Keywords :
cognitive radio; optimisation; amplify-and-forward overlay cognitive network; averaged aggregate throughput maximization; cooperatively cognitive networks; joint sensing time allocation; power allocation; sequential optimization; Aggregates; Bit error rate; Chromium; Cognitive radio; Cost function; Information technology; Interference constraints; Protection; Signal detection; Throughput; Cognitive radio (CR), spectrum sensing, power allocation, cooperative communications, optimization;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2010.02.092102
