TIIS (한국인터넷정보학회)
Current Result Document :
| 한글제목(Korean Title) |
Optimal sensing period in cooperative relay cognitive radio networks |
| 영문제목(English Title) |
Optimal sensing period in cooperative relay cognitive radio networks |
| 저자(Author) |
Shibing Zhang
Xin Guo
Xiaoge Zhang
Gongan Qiu
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| 원문수록처(Citation) |
VOL 10 NO. 12 PP. 5249 ~ 5267 (2016. 12) |
한글내용
(Korean Abstract) |
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영문내용
(English Abstract) |
Cognitive radio is an efficient technique to improve spectrum efficiency and relieve the pressure of spectrum resources. In this paper, we investigate the spectrum sensing period in cooperative relay cognitive radio networks; analyze the relationship between the available capacity and the signal-to-noise ratio of the received signal of second users, the target probability of detection and the active probability of primary users. Finally, we derive the closed form expression of the optimal spectrum sensing period in terms of maximum throughput. We simulate the probability of false alarm and available capacity of cognitive radio networks and compare optimal spectrum sensing period scheme with fixed sensing period one in these performance. Simulation results show that the optimal sensing period makes the cognitive networks achieve the higher throughput and better spectrum sensing performance than the fixed sensing period does. Cooperative relay cognitive radio networks with optimal spectrum sensing period can achieve the high capacity and steady probability of false alarm in different target probability of detection. It provides a valuable reference for choosing the optimal spectrum sensing period in cooperative relay cognitive radio networks.
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| 키워드(Keyword) |
Wireless communications
cognitive radio networks
cooperative relay
spectrum sensing
throughout
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| 파일첨부 |
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