Research Article
On selfish and altruistic coalition formation in cognitive radio networks
@INPROCEEDINGS{10.4108/ICST.CROWNCOM2010.9208, author={Zaheer Khan and Janne Lehtom\aa{}ki and Matti Latva-aho and Luiz A. DaSilva}, title={On selfish and altruistic coalition formation in cognitive radio networks}, proceedings={5th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications}, publisher={IEEE}, proceedings_a={CROWNCOM}, year={2010}, month={9}, keywords={Chromium Cognitive radio Games Object detection Sensors Signal to noise ratio Throughput}, doi={10.4108/ICST.CROWNCOM2010.9208} }- Zaheer Khan
Janne Lehtomäki
Matti Latva-aho
Luiz A. DaSilva
Year: 2010
On selfish and altruistic coalition formation in cognitive radio networks
CROWNCOM
IEEE
DOI: 10.4108/ICST.CROWNCOM2010.9208
Abstract
We formulate the sensing-throughput tradeoff problem for distributed cognitive radio (CR) networks as a coalition formation game. Formation of coalitions enables the CRs to increase their achievable throughput, under the detection probability constraint, while also taking into account the overhead in sensing reports combining. In the proposed game, CRs form coalitions either to increase their individual gains (selfish coalition formation) or to maximize the overall gains of the group (altruistic coalition formation). We find that the altruistic coalition formation solution yields significant gains in terms of reduced average false alarm probability and increased average throughput per CR as compared to the selfish and non-cooperative solutions. Given a target detection probability for a coalition, we also propose an SNR dependent target detection probability for individual CRs in a coalition and analyze its impact on the average throughput per CR. Finally, we also analyze the impact of the cost of distributed cooperative sensing on the cooperative strategies of CRs.
