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    題名: A Fuzzy-based Dynamic Channel Allocation
    作者: Wang, Ying-Hong*, Liao, Shou-Li, Chang, Jui-Lin
    關鍵詞: Cognitive Radio;Fuzzy;Channel Allocation
    日期: 2015-08-23
    上傳時間: 2015-09-15
    出版者: IEEE
    摘要: In traditional wireless networks, fixed allocation of spectrum is one of the main reason causing low utilization of spectrum. In order to solve this problem, a new wireless communication model has been proposed, which called Cognitive Radio Networks (CRN). CRN adopts Dynamic Spectrum Access (DSA) technology, thus it can flexibly use the spectrum which primary user temporarily unused. In cognitive radio networks, due to each secondary user (SU) has different location and surrounding spectrum environment, it may have variety of available channels. How to assign these available channels is the crucial point of system performance. However, existing methods doesn’t consider the problem of multipath fading; therefore, this study proposed an improved channel allocation scheme. We consider the received signal strength to define the channel access priority of secondary users applied by fuzzy theory. Finally, the simulation results show the superior of our approach and verify the effectiveness of the proposed scheme.
    關聯: Proceedings of 2015 8th International Conference on Ubi-Media Computing, pp: 049-054
    顯示於類別:[資訊工程學系暨研究所] 會議論文

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