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Channel Assignment of Cooperative Spectrum Sensing in Multi-Channel Cognitive Radio Networks

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4 Author(s)
Weiwei Wang ; Dept. of Electr. & Comput. Eng., Univ. of Manitoba, Winnipeg, MB, Canada ; Kasiri, B. ; Jun Cai ; Alfa, A.S.

In this paper, channel assignment in cooperative spectrum sensing is studied for multi-channel cognitive radio networks. Based on the information from each secondary user, e.g., primary signal-to-noise ratios over all channels, a centralized scheme is proposed, which assigns channels to different secondary users for sensing so that the number of available channels, which meet the sensing performance requirements in terms of miss detection and false alarm probabilities, can be greatly increased. By further taking the communication overhead into account, a greedy scheme is proposed to reduce the reporting information from the secondary users to the base station. The simulation results demonstrate that both schemes can significantly increase the number of available channels, while the latter also shows advantages in reducing the signaling overhead.

Published in:

Communications (ICC), 2011 IEEE International Conference on

Date of Conference:

5-9 June 2011

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