Proceedings of the Korean Information Science Society Conference (한국정보과학회:학술대회논문집)
- 2012.06d
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- Pages.300-302
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- 2012
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- 1598-5164(pISSN)
Link Scheduling and Channel Assignment in Multi-channel Cognitive Radio Networks: Spectrum Underlay Approach
- Nguyen, Mui Van (Dept. of Computer Engineering, Kyung Hee University) ;
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Hong, Choong-Seon
(Dept. of Computer Engineering, Kyung Hee University)
- Published : 2012.06.22
Abstract
In this paper, we investigate the performance of multi-channel cognitive radio networks (CRNs) by taking into consideration the problem of channel assignment and link scheduling. We assume that secondary nodes are equipped with multiple radios and can switch among multiple channels. How to allocate channels to links and how much power used on each channel to avoid mutual interference among secondary links are the key problem for such CRNs. We formulate the problem of channel assignment and link scheduling as a combinatorial optimization problem. Then, we propose a the optimal solution and show that it converges to maximum optimum in some iterations by using numerical results.
Keywords