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题名:
Time-efficient cooperative spectrum sensing via analog computation over multiple-access channel
作者: Zheng M(郑萌); Xu C(许驰); Liang W(梁炜); Yu HB(于海斌); Chen L(陈林)
作者部门: 工业控制网络与系统研究室
通讯作者: 郑萌 ; 梁炜 ; 于海斌
关键词: Cognitive radio ; Spectrum sensing ; Energy detection ; Multiple-access channel ; Analog computation
刊名: Computer Networks
ISSN号: 1389-1286
出版日期: 2017
卷号: 112, 页码:84-94
收录类别: SCI ; EI
产权排序: 1
项目资助者: Natural Science Foundation of China under grant (61233007, 61304263, 61673371, 71602124) and the French Agence Nationale de la Recherche (ANR) under the grant Green-Dyspan (ANR-12-IS03).
摘要: Conventional cooperative spectrum sensing (CSS) schemes in cognitive radio networks (CRNs) require that the secondary users (SUs) report their sensing data separately in the time domain to the fusion center, which yields long reporting delay especially in the case of large number of cooperative SUs. By exploiting the computation over multiple-access channel (CoMAC) method, this paper proposes a novel CoMAC-based CSS scheme that allows the cooperative SUs to encode their local statistics in transmit power and to transmit simultaneously the modulated symbols sequence carrying transmit power information to the fusion center. The fusion center then makes the final decision on the presence of primary users by recovering the overall test statistic of energy detection from the energy of the received signal. Performance metrics of the CoMAC-based CSS scheme, i.e., detection probability and false alarm probability, are further derived based on the central limit theorem. Finally, based on the derived detection and false alarm probabilities, both energy detection threshold and spectrum sensing time are optimized to improve the average throughput of the CRN. Simulations demonstrate the efficiency of this work.
语种: 英语
EI收录号: 20164803055422
WOS记录号: WOS:000392781800007
WOS标题词: Science & Technology ; Technology
类目[WOS]: Computer Science, Hardware & Architecture ; Computer Science, Information Systems ; Engineering, Electrical & Electronic ; Telecommunications
关键词[WOS]: COGNITIVE RADIO NETWORKS ; OPTIMIZATION ; FUSION
研究领域[WOS]: Computer Science ; Engineering ; Telecommunications
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内容类型: 期刊论文
URI标识: http://ir.sia.cn/handle/173321/19424
Appears in Collections:工业控制网络与系统研究室_期刊论文

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Recommended Citation:
Zheng M,Xu C,Liang W,et al. Time-efficient cooperative spectrum sensing via analog computation over multiple-access channel[J]. Computer Networks,2017,112:84-94.
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