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Sungsoo Park and Daesik Hong, "Optimal Spectrum Access for Energy Harvesting Cognitive Radio Networks," IEEE Transactions on Wireless Communications, Dec. 2013

[IEEE Trans. Wireless Commun.]
조회 44492
Status : Published 
Date : 2013-12 
Title : Optimal Spectrum Access for Energy Harvesting Cognitive Radio Networks 
Authors : Sungsoo Park and Daesik Hong 
Journal : IEEE Transactions on Wireless Communications 
Abstract : We consider energy harvesting cognitive radio networks in which a secondary transmitter harvests energy from ambient sources or wireless power transfer systems while opportunistically accessing the spectrum licensed to the primary network. The primary traffic is modeled as a time-homogeneous discrete Markov process, and the secondary transmitter may not be able to operate continuously due to sporadic and unstable energy sources. At the beginning of each time slot, the secondary transmitter thus needs to determine whether to remain idle so as to conserve energy, or to execute spectrum sensing to acquire knowledge of the current spectrum occupancy state. It also needs to configure the spectrum sensor detection threshold to achieve an effective tradeoff between false alarms and misdetections. This sequential decision-making, done to maximize the expected total throughput, requires the joint design of a spectrum sensing policy and a detection threshold under the energy causality and collision constraints. We formulate this stochastic optimization problem as a constrained partially observable Markov decision process(POMDP), and then convert it to a computationally tractable unconstrained POMDP. Numerical results show that the proposed approach enables efficient usage of the harvested energy by exploiting the temporal correlation of the primary traffic. 
URL : http://ieeexplore.ieee.org/xpl/articleDe...er=6661321 
Download : http://mirinae.yonsei.ac.kr/?module=file...799453f8dc 
Park, Sungsoo; Hong, Daesik, "Optimal Spectrum Access for Energy Harvesting Cognitive Radio Networks," Wireless Communications, IEEE Transactions on , vol.12, no.12, pp.6166,6179, December 2013
doi: 10.1109/TWC.2013.103113.130018
keywords: {Batteries;Correlation;Energy harvesting;Radio transmitters;Sensors;Throughput;Cognitive radio network;energy causality;energy harvesting;opportunistic spectrum access;partially observable Markov decision process (POMDP);renewable energy;spectrum access policy},
URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6661321&isnumber=6685967
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160 [IEEE Trans. Wireless Commun.] S. Kim, H. Kim, H. Noh, Y. Kim and D. Hong, "Novel Transceiver Architecture for an Asynchronous Grant-Free IDMA System," in IEEE Transactions on Wireless Communications Published  2019-10 
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157 [IEEE Trans. Wireless Commun.] Jaeyoung Choi, Beomju Kim, Kwonjong Lee, and Daesik Hong, "A Transceiver Design for Spectrum Sharing in Mixed Numerology Environments", IEEE Trans. on Wireless Comm., Mar. 2019 Published  2019-03 
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» [IEEE Trans. Wireless Commun.] Sungsoo Park and Daesik Hong, "Optimal Spectrum Access for Energy Harvesting Cognitive Radio Networks," IEEE Transactions on Wireless Communications, Dec. 2013 file Published  2013-12 
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