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Channel Allocation to Reduce Co-channel Interference in Multi-cell Cognitive Radio Networks

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2 Author(s)
Seung Su Han ; Sungkyunkwan Univ., Suwon ; Tae-Jin Lee

The cognitive radio (CR) has been proposed as a technology to improve the utilization of radio spectrum and enables to adapt dynamically to local spectrum availability, such that unused parts of spectrum can be temporarily utilized by other users (secondary CR users). But CR must be able to demonstrate usage with minimal harm to primary users. In addition, the problem of co-channel interference by adjacent CR cell exists. In this paper, we propose an algorithm in which channels of CR cells are not only overlapped with those of other CR cells in the same cluster but also with those of primary users. The performance of the algorithm is evaluated in multi-cell CR networks environment.

Published in:

Innovations in Information Technology, 2007. IIT '07. 4th International Conference on

Date of Conference:

18-20 Nov. 2007