Novel distributed algorithm for coalition formation for enhanced spectrum sensing in cognitive radio networks
In this paper, we propose a novel algorithm for improving spectrum sensing in cognitive radio networks by forming coalitions among cognitive radio users in a fading channel environment. We use concepts from matching theory, specifically the stable marriage problem, to formulate the interactions am...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English English English |
| Published: |
Elsevier
2017
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/57209/ http://irep.iium.edu.my/57209/ http://irep.iium.edu.my/57209/ http://irep.iium.edu.my/57209/1/57209_Novel%20distributed%20algorithm_article.pdf http://irep.iium.edu.my/57209/2/57209_Novel%20distributed%20algorithm_WOS.pdf http://irep.iium.edu.my/57209/3/57209_Novel%20distributed%20algorithm_scopus.pdf |
| Summary: | In this paper, we propose a novel algorithm for improving spectrum sensing in cognitive radio networks
by forming coalitions among cognitive radio users in a fading channel environment. We use concepts from
matching theory, specifically the stable marriage problem, to formulate the interactions among the cogni-
tive radio users as a matching game for collaborative distributed spectrum sensing under target detection
probability constraint. The utility function is defined as the average probability of false alarm per cognitive
radio user. The advantage of stable marriage is that it always converges to a stable matching and is Pareto
optimal when the preferences of cognitive radios are strict. In the proposed model, we extend the stable
matching problem to propose a novel algorithm to form coalitions of varying sizes for improving the utility of
cognitive radios (false alarm and throughput). The coalitions formed using the algorithm are stable and do
not deviate from the final matching. We show using simulations that the proposed algorithm leads to stable
coalitions and returns significant improvement in term of reduced probability of false alarm and improved
throughput per cognitive radio user as compared to the non-cooperative scenario. |
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