复合衰落信道下基于删余的多天线协作频谱感知

doi:10.13190/j.jbupt.2017.04.005

北京邮电大学学报 ›› 2017, Vol. 40 ›› Issue (4): 29-34.doi: 10.13190/j.jbupt.2017.04.005

复合衰落信道下基于删余的多天线协作频谱感知

李美玲¹, 贺文丽¹, 董增寿¹, 路兆铭²

1. 太原科技大学电子信息工程学院, 太原 030024;
2. 北京邮电大学信息与通信工程学院, 北京 100022

收稿日期:2016-12-27 出版日期:2017-08-28 发布日期:2017-07-10
作者简介:李美玲(1982-),女,副教授;董增寿(1962-),男,教授,E-mail:ansondon@sohu.com.
基金资助:
国家自然科学基金资助项目（41272374）；山西省青年科技研究基金（2014021021-2）；太原科技大学博士科研项目（20122032）

Sensor-Based Cooperative Spectrum Sensing with Multiple Antennas over Composite Fading Channels

LI Mei-ling¹, HE Wen-li¹, DONG Zeng-shou¹, LU Zhao-ming²

1. School of Electronics and Information Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China;
2. School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received:2016-12-27 Online:2017-08-28 Published:2017-07-10

摘要/Abstract

摘要： 提出了一种基于删余的多天线协作频谱感知（C-MA-CSS），利用混合伽马分布推导了感知信道为复合衰落信道时C-MA-CSS的检测率、漏检率、虚警率和次系统容量的闭合表达式，并分析了它们与天线数的关系，给出了使次系统容量最大化的优化算法.仿真结果表明，相比非删余的CSS而言，一方面C-MA-CSS能够明显降低漏检率；另一方面，随着天线数的增多，次系统容量先增大后趋于平稳，采用优化算法可以在确保主用户受到足够保护的前提下，利用较少的天线数实现优化的次系统容量.

关键词: 多天线协作频谱感知, 复合衰落信道, 混合伽马分布, 检测性能, 次系统容量

Abstract: The censor-based cooperative spectrum sensing with multiple antennas (C-MA-CSS) was proposed, the closed-form expressions for the detection probability, miss-detection probability, the false-alarm probability and the secondary throughput were derived using the mixture Gamma distribution under the composite fading sensing channels. Then, the relationships between them and the number of antennas were analyzed, and the optimal algorithm for maximizing the secondary throughput was also given. Simulation results demonstrated that lower miss-detection probability can be achieved in C-MA-CSS compared to the non-censoring CSS. Besides, the secondary throughput monotonically increased rapidly first and slowly after. Meanwhile, optimal secondary throughput can be achieved with smaller number of antennas by the proposed algorithm while maintaining the target detection probability.

Key words: cooperative spectrum sensing with multiple antennas, composite fading channels, mixture Gamma distribution, detection performance, secondary throughput

中图分类号:

TN92

李美玲, 贺文丽, 董增寿, 路兆铭. 复合衰落信道下基于删余的多天线协作频谱感知[J]. 北京邮电大学学报, 2017, 40(4): 29-34.

LI Mei-ling, HE Wen-li, DONG Zeng-shou, LU Zhao-ming. Sensor-Based Cooperative Spectrum Sensing with Multiple Antennas over Composite Fading Channels[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2017, 40(4): 29-34.

参考文献

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[8] 李美玲, 袁超伟,李琳, 等. 使次系统容量最大化的协作频谱感知性能分析及优化[J]. 通信学报, 2011, 32(2):53-60. Li Meiling, Yuan Chaowei, Li Lin, et al. Performance analysis and optimization of cooperative spectrum sensing for maximizing secondary throughput[J]. Journal on Communications, 2011, 32(2):53-60.
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复合衰落信道下基于删余的多天线协作频谱感知

Sensor-Based Cooperative Spectrum Sensing with Multiple Antennas over Composite Fading Channels

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