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Matched filter based spectrum sensing when primary user has multiple power levels

ISSN号：1673-5447
期刊名称：China Communications
时间：2015
页码：21-31
分类：TN713.6[电子电信—电路与系统] TN915.62[电子电信—通信与信息系统;电子电信—信息与通信工程]
作者机构：[1]Key Lab of Mobile Communication Technology, Chongqing University of Posts and Telecommunications, Chongqing, 400065, China, [2]Department of Automation, Tsinghua University, State Key Lab of Intelligent Technologies and Systems, Tsinghua National Laboratory for Information Science and Technology (TNList) Beijing, P.R.China, [3]Wuhan National Laboratory for Optoelectronics, Department of Electronic and Information, Huazhong University of Science and Technology, Wuhan, 430074, China
相关基金：supported in part by the National Basic Research Program of China（973 Program）under Grant 2013CB336600; the Beijing Natural Science Foundation under Grant 4131003; the National Natural Science Foundation of China under Grant{61201187,61422109}; the Importation and Development of High-Caliber Talents Project of Beijing Municipal Institutions under Grant YETP0110
相关项目：基于空间辨识与跟踪的自主学习型多天线认知无线电技术研究

关键词：匹配滤波器, 功率电平, 用户, 频谱, 感知, 假设检验, 认知无线电, IEEE, spectrum sensing power recognition matched filter multiple primary transmit power multiple hypothesis testing power mask

中文摘要：

In this paper,we investigate the matched filter based spectrum sensing in a more reasonable cognitive radio(CR) scenario when the primary user(PU) has more than one transmit power levels,as regulated in most standards,i.e.,IEEE 802.11 Series,GSM,LTE,LTE-A,etc.This new multiple primary transmit power(MPTP) scenario is specialized by two different targets:detecting the presence of PU and identifying the power level.Compared to the traditional binary sensing where only the presence of PU is checked,SU may attain more information about the primary network(making CR more 'intelligent') and design the subsequent optimization strategy.The key technology is the multiple hypothesis testing as opposed to the traditional binary hypothesis testing.We discuss two situations under whether the channel phase is known or not,and we derive the closed form solutions for decision regions and several performance metrics,from which some interesting phenomenons are observed and the related discussions are presented.Numerical examples are provided to corroborate the proposed studies.更多还原

英文摘要：

In this paper,we investigate the matched filter based spectrum sensing in a more reasonable cognitive radio（CR） scenario when the primary user（PU） has more than one transmit power levels,as regulated in most standards,i.e.,IEEE 802.11 Series,GSM,LTE,LTE-A,etc.This new multiple primary transmit power（MPTP） scenario is specialized by two different targets：detecting the presence of PU and identifying the power level.Compared to the traditional binary sensing where only the presence of PU is checked,SU may attain more information about the primary network（making CR more ＂intelligent＂） and design the subsequent optimization strategy.The key technology is the multiple hypothesis testing as opposed to the traditional binary hypothesis testing.We discuss two situations under whether the channel phase is known or not,and we derive the closed form solutions for decision regions and several performance metrics,from which some interesting phenomenons are observed and the related discussions are presented.Numerical examples are provided to corroborate the proposed studies.

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