Spectrum handoff in cognitive radio with fuzzy logic control |
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Authors: | Wanbin Tang Dong Peng |
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Affiliation: | National Communication Laboratory,University of Electronic Science and Technology of China, Chengdu 611731,China |
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Abstract: | The secondary usage of spectrum has been investigated in Cognitive Radio (CR) network to resolving the spectrum scarcity issue
in wireless communication. When Primary Users (PU) who own the spectrum appear, spectrum handoff is needed to maintain the
communications of Secondary Users. But the decision making of spectrum handoff is a challenge issue for CR network, because
the input of decision making, which obtain through spectrum sensing, is heterogeneous and inexact. In this paper we will use
fuzzy logic control theory to solve this issue and make use of new information for handoff operation: the probability of PU’s
occupancy at a certain channel. Our new algorithm can make more intelligent decision compared to simple traditional spectrum
handoff decision making and reduce the probability of spectrum handoff, also the performance of SU’s communication can be
enhanced. |
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Keywords: | Cognitive Radio (CR) Spectrum handoff Fuzzy logic control |
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