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| 基于最优计数准则的合作频谱感知 | |
| 引用本文： | 赵宝柱,邢志强,刘序明,宋鹏. 基于最优计数准则的合作频谱感知[J]. 传感器与微系统, 2012, 31(2): 48-51 |
| 作者姓名： | 赵宝柱 邢志强 刘序明 宋鹏 |
| 作者单位： | 1. 清华大学电子工程系微波与数字通信国家重点实验室,北京100084;中国人民解放军62315部队42分队,北京100842 2. 北方工业大学信息工程学院,北京,100144 3. 清华大学电子工程系微波与数字通信国家重点实验室,北京,100084 |
| 基金项目： | 北京市教委科技发展计划重点资助项目 |
| 摘 要： | 为了使基于计数准则判决融合的合作频谱感知达到最优性能,从理论上研究了本地判决包含的信息量与次用户(SU)接收信噪比的关系,并指出了达到最优计数准则融合的条件。在此基础上,提出了一个基于最优计数融合准则的算法,能够将SU按照信噪比排序,并排除会降低合作感知性能的SU。计算结果和仿真数据表明理论分析是正确的,所提算法也能够很好地筛选接收信噪比高的节点,达到实现提高合作感知性能的目的。 |
| 关 键 词： | 认知无线电 合作频谱感知 能量检测 最优判决融合 最优计数准则 |
Cooperative spectrum sensing based on optimal counting rule |
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| ZHAO Bao-zhu , XING Zhi-qiang , LIU Xu-ming , SONG Peng. Cooperative spectrum sensing based on optimal counting rule[J]. Transducer and Microsystem Technology, 2012, 31(2): 48-51 | |
| Authors: | ZHAO Bao-zhu XING Zhi-qiang LIU Xu-ming SONG Peng |
| Affiliation: | 1.State Key Laboratory of Microwave and Digital Communication,Department of Electronic Engineering,Tsinghua University,Beijing 100084,China; 2.42 Division,62315 Troops of Chinese People’s Liberation Army(PLA),Beijing 100842,China; 3.School of Information Engineering,North China University of Technology,Beijing 100144,China) |
| Abstract: | To obtain the optimal performance of the cooperative spectrum sensing based on counting rule decision fusion,the relation between the information contained in local decision and received signal-to-noise ratio of secondary user(SU)is studied theoretically.The condition with which the optimal decision fusion can be achieved is given.An algorithm is proposed to sort the SUs and exclude those whose signal-to-noise ratio are lower than a threshold from cooperative scheme.The results of calculation verified the correctness of our theorectical analysis.The simulation results illustrated the good performance of the algorightm on sorting the SUs and screening them. |
| Keywords: | cognitive radio cooperative spectrum sensing energy detection optimal decision fusion optimal counting rule |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |