基于循环平稳检测的协作频谱感知
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摘要
在认知无线电系统中,电磁频谱资源的合理利用与高效管理依赖于电磁频谱信号的感知技术。为提高电磁信号的感知能力,我们通常在高效单节点检测的基础上,采用多点协作感知的方式来提高感知能力。本文提出了一种基于循环平稳检测的集中式协作频谱感知机制,在保证感知能力的基础上有效降低系统的复杂度。通过对仿真结果可以看到,在等增益合并准则条件下,本文提出的基于循环平稳检测的集中式协作频谱感知方法可以得到可靠的频谱感知效果。
In cognitive radio systems, spectrum sensing technology plays the key part of ration utilization and high-efficient management. To improve the ability of sensing electromagnetic signals,we always employ cooperative sensing based on high efficiency single detection. In this paper, we proposed a cooperative spectrum sensing approach based on cyclic stationary detection, which is capable of achieving high sensing ability as well as low system complexity. From simulation results it can be seen that the equal gain combining(EGC) fusion spectrum sensing is capable of achieving acceptable overall detection performance based on cyclic stationary local detection.
In cognitive radio systems, spectrum sensing technology plays the key part of ration utilization and high-efficient management. To improve the ability of sensing electromagnetic signals,we always employ cooperative sensing based on high efficiency single detection. In this paper, we proposed a cooperative spectrum sensing approach based on cyclic stationary detection, which is capable of achieving high sensing ability as well as low system complexity. From simulation results it can be seen that the equal gain combining(EGC) fusion spectrum sensing is capable of achieving acceptable overall detection performance based on cyclic stationary local detection.
引文
[1]T.T.Nguyen,H.H.Nguyen and T.Le-Ngoc.Iterative interference cancellation in multiuser relaying with fast frequency-hopping modulation,[J].IETCommunications,vol.8,no.15,pp.2693-2705,October 16,2014.
[2]黄知涛,周一宇,姜文利.循环平稳信号处理与应用[M].北京:科学出版社,2006:23-35.
[3]M.Zheng,B.Yang,W.Liang,H.Yu and L.Chen.Adaptive frequency hopping in industrial Wireless Sensor Networks:A decision-theoretic framework,[J].2015IEEE International Conference on Cyber Technology in Automation,Control,and Intelligent Systems(CYBER),Shenyang,2015,pp.88-92.
[4]艾春丽,张凤登,等.无线传感网能量监测方法研究[J].自动化仪表.2007.28(12):5-7.
[5]D.J.Goodman,P.S.Henry and V.K.Prabhu.Frequencyhopped multilevel FSK for mobile Radio[J].The Bell System Technical Journal,vol.59,no.7,pp.1257-1275,Sept.1980.
[6]刘传清,胡修林,张蕴玉.基于MMSE的快跳频系统多用户检测算法[J].华中科技大学学报(自然科学版),2007(07).
[7]杨余旺,于继明,赵炜,等.单跳无线传感器网络能量分析计算[J].南京理工大学学报,2007,31(1):81-84.
[8]Hussam Kloub,Daniel Hoffmann.A Micro Capacitive Vibration Energy Harvester for Low Power Electronics[C].HPower MEMS.2009:165-168.
[2]黄知涛,周一宇,姜文利.循环平稳信号处理与应用[M].北京:科学出版社,2006:23-35.
[3]M.Zheng,B.Yang,W.Liang,H.Yu and L.Chen.Adaptive frequency hopping in industrial Wireless Sensor Networks:A decision-theoretic framework,[J].2015IEEE International Conference on Cyber Technology in Automation,Control,and Intelligent Systems(CYBER),Shenyang,2015,pp.88-92.
[4]艾春丽,张凤登,等.无线传感网能量监测方法研究[J].自动化仪表.2007.28(12):5-7.
[5]D.J.Goodman,P.S.Henry and V.K.Prabhu.Frequencyhopped multilevel FSK for mobile Radio[J].The Bell System Technical Journal,vol.59,no.7,pp.1257-1275,Sept.1980.
[6]刘传清,胡修林,张蕴玉.基于MMSE的快跳频系统多用户检测算法[J].华中科技大学学报(自然科学版),2007(07).
[7]杨余旺,于继明,赵炜,等.单跳无线传感器网络能量分析计算[J].南京理工大学学报,2007,31(1):81-84.
[8]Hussam Kloub,Daniel Hoffmann.A Micro Capacitive Vibration Energy Harvester for Low Power Electronics[C].HPower MEMS.2009:165-168.