Intelligent spectrum assignment and migration in cognitive radio network
نویسندگان
چکیده
منابع مشابه
An Adaptive Spectrum Assignment Algorithm in Cognitive Radio Network
Today’s wireless networks are characterized by a fixed spectrum assignment policy. On the other hand, a huge portion of the assigned spectrum is underutilized. But in contrast, rapid development of wireless communication technologies is seriously challenged by spectrum scarcity problem and lower spectrum utilization. Cognitive radio network (CRN), a revolutionary technology in wireless communic...
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Cognitive radio technology holds great promises in enabling unlicensed operation in licensed bands, to meet the increasing demand for radio spectrum. The (SDRP) Service differentiation routing protocol discovers minimum delay – maximum stability route in dynamic CRNs by considering the availability of spectrum opportunity in addition to switching delay and queuing delay. SDRP achieves better pe...
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Cognitive radio (Mitola III, 2000) also known as opportunistic spectrum access (OSA) has emerged as a promising solution to increase the spectrum efficiency Haykin (2005). In OSA, the SU finds spectrum holes (white space) by sensing the radio frequency spectrum. The presence of spectrum holes in the PU channels are highlighted in Fig. 1. These spectrum holes are used by the SU for its transmiss...
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The interference constraints of genetic spectrum assignment model in cognitive radio networks are analyzed in this paper. An improved genetic spectrum assignment model is proposed. The population of genetic algorithm is divided into two sets, the feasible spectrum assignment strategies and the randomly updated spectrum assignment strategies. The penalty function is added to the utility function...
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ژورنال
عنوان ژورنال: EURASIP Journal on Wireless Communications and Networking
سال: 2013
ISSN: 1687-1499
DOI: 10.1186/1687-1499-2013-200