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Sungsoo Park, Seokwon Lee, Beomju Kim, Daesik Hong, Jemin Lee, "Energy-Efficient Opportunistic Spectrum Access in Cognitive Radio Networks with Energy Harvesting", CogART2011, Nov. 2011 (Invited Paper)
[Other Conf. Papers]
조회 88703
Status : | Presented |
---|---|
Date : | 2011-11 |
Title : | Energy-Efficient Opportunistic Spectrum Access in Cognitive Radio Networks with Energy Harvesting |
Authors : | Sungsoo Park, Seokwon Lee, Beomju Kim, Daesik Hong, Jemin Lee |
Conference : | CogART2011 |
Abstract : | In cognitive radio networks, secondary user performs spectrum sensing to detect primary user activities and to access the channel opportunistically. We investigate the problem of developing energy efficient opportunistic spectrum access strategy for a secondary user with energy harvesting capability. We formulate the problem to determine the optimal sensing and access policy as a partially observable Markov decision process (POMDP). Since obtaining the optimal policy is computationally prohibitive, we provide a suboptimal myopic policy that maximizes expected immediate throughput instead of expected total throughput. Simulation results demonstrate that the proposed myopic policy yields improved throughput compared to a random channel selection strategy. |
URL : | http://dl.acm.org/citation.cfm?id=2093318 |
Download : | http://mirinae.yonsei.ac.kr/?module=file...04daa17d0b |
Sungsoo Park, Seokwon Lee, Beomju Kim, Daesik Hong, and Jemin Lee. 2011. Energy-efficient opportunistic spectrum access in cognitive radio networks with energy harvesting. InProceedings of the 4th International Conference on Cognitive Radio and Advanced Spectrum Management (CogART '11). ACM, New York, NY, USA, , Article 62 , 5 pages. DOI=10.1145/2093256.2093318 http://doi.acm.org/10.1145/2093256.2093318
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