JICCE (한국정보통신학회)
Current Result Document :
| 한글제목(Korean Title) |
Optimal Sensing Time for Maximizing the Throughput of Cognitive Radio Using Superposition Cooperative Spectrum Sensing |
| 영문제목(English Title) |
Optimal Sensing Time for Maximizing the Throughput of Cognitive Radio Using Superposition Cooperative Spectrum Sensing |
| 저자(Author) |
Hiep Vu-Van
Insoo Koo
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| 원문수록처(Citation) |
VOL 13 NO. 04 PP. 0221 ~ 0227 (2015. 12) |
한글내용
(Korean Abstract) |
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영문내용
(English Abstract) |
Spectrum sensing plays an essential role in a cognitive radio network, which enables opportunistic access to an underutilized licensed spectrum. In conventional cooperative spectrum sensing (CSS), all cognitive users (CUs) in the network spend the same amount of time on spectrum sensing and waste time in remaining silent when other CUs report their sensing results to the fusion center. This problem is solved by the superposition cooperative spectrum sensing (SPCSS) scheme, where the sensing time of a CU is extended to the reporting time of the other CUs. Subsequently, SPCSS assigns the CUs different sensing times and thus affects both the sensing performance and the throughput of the system. In this paper, we propose an algorithm to determine the optimal sensing time of each CU for SPCSS that maximizes the achieved system throughput. The simulation results prove that the proposed scheme can significantly improve the throughput of the cognitive radio network compared with the conventional CSS.
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| 키워드(Keyword) |
Cognitive radio
Optimal sensing time
Superposition cooperative spectrum sensing
Throughput maximization
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| 파일첨부 |
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