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Throughput Maximization for a Primary User with Cognitive Radio and Energy Harvesting Functions
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  • Throughput Maximization for a Primary User with Cognitive Radio and Energy Harvesting Functions
  • Throughput Maximization for a Primary User with Cognitive Radio and Energy Harvesting Functions
저자명
Nguyen. Thanh-Tung,Koo. Insoo
간행물명
KSII Transactions on internet and information systems : TIIS
권/호정보
2014년|8권 9호|pp.3075-3093 (19 pages)
발행정보
한국인터넷정보학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

In this paper, we consider an advanced wireless user, called primary-secondary user (PSU) who is capable of harvesting renewable energy and connecting to both the primary network and cognitive radio networks simultaneously. Recently, energy harvesting has received a great deal of attention from the research community and is a promising approach for maintaining long lifetime of users. On the other hand, the cognitive radio function allows the wireless user to access other primary networks in an opportunistic manner as secondary users in order to receive more throughput in the current time slot. Subsequently, in the paper we propose the channel access policy for a PSU with consideration of the energy harvesting, based on a Partially Observable Markov decision process (POMDP) in which the optimal action from the action set will be selected to maximize expected long-term throughput. The simulation results show that the proposed POMDP-based channel access scheme improves the throughput of PSU, but it requires more computations to make an action decision regarding channel access.