Research Article
Contention-Aware Spectrum Sensing and Access Algorithm of Cognitive Network
@INPROCEEDINGS{10.1109/CROWNCOM.2008.4562558, author={HU Gang and ZHANG Qian and XU Ming}, title={Contention-Aware Spectrum Sensing and Access Algorithm of Cognitive Network}, proceedings={3rd International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications}, publisher={IEEE}, proceedings_a={CROWNCOM}, year={2010}, month={5}, keywords={spectrum;sensing;access;contention-aware}, doi={10.1109/CROWNCOM.2008.4562558} }- HU Gang
ZHANG Qian
XU Ming
Year: 2010
Contention-Aware Spectrum Sensing and Access Algorithm of Cognitive Network
CROWNCOM
IEEE
DOI: 10.1109/CROWNCOM.2008.4562558
Abstract
The technology of sensing and access the potential available spectrum is always a hot topic for cognitive radio networks. Compare to the existing works, this paper proposes a new centralized sensing and access protocol which is based on the premise of contention-aware network flow. The target of this protocol is to maximize the expected throughput of the whole cognitive network. We have proven that finding the optimal sensing and access results under a fixed contention topology is NP problem. An approximated algorithm is proposed which is consisted by minimum clique cover and maximum matching algorithm. By detailed simulation, the performance of the approximated algorithm have at least 30% improvement comparing to the optimal sensing and access scheme which do not adopt the clique cover and maximum matching scheme.