一种基于正交匹配追踪的压缩感知信号检测算法

TN914.4; 针对当前压缩感知信号检测算法没有充分利用稀疏系数幅值信息的不足，提出了一种新的检测算法。从正交匹配追踪算法切入，通过深入分析归一化残差的变化信息，提出归一化余差概念，建立了一种基于归一化残差和归一化余差二维判决的信号检测算法。仿真结果表明，算法的有效检测阈值区间随着信噪比的降低而不断减小，且在信噪比为-8 dB、压缩比为0.25时，该算法的检测概率仍能满足要求，具备较好的适应性。...

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Bibliographic Details
Published in电讯技术 Vol. 56; no. 8; pp. 856 - 861
Main Author 秦国领 郑森 王康 李梓博
Format Journal Article
LanguageChinese
Published 酒泉卫星发射中心,甘肃 酒泉,732750%西昌卫星发射中心,四川 西昌,615000%解放军63778部队,黑龙江 佳木斯,154002 2016
Subjects
信号检测
压缩感知
正交匹配追踪
特征量
正交匹配追踪
signal detection
compressed sensing
信号检测
压缩感知
characteristic quantity
特征量
orthogonal matching pursuit
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ISSN1001-893X
DOI10.3969/j.issn.1001-893x.2016.08.005

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Summary:TN914.4; 针对当前压缩感知信号检测算法没有充分利用稀疏系数幅值信息的不足，提出了一种新的检测算法。从正交匹配追踪算法切入，通过深入分析归一化残差的变化信息，提出归一化余差概念，建立了一种基于归一化残差和归一化余差二维判决的信号检测算法。仿真结果表明，算法的有效检测阈值区间随着信噪比的降低而不断减小，且在信噪比为-8 dB、压缩比为0.25时，该算法的检测概率仍能满足要求，具备较好的适应性。
Bibliography:QIN Guoling ,ZHENG Sen,WANG Kang ,LI Zibo（1. Jiuquan Satellite Launch Center,Jiuquan 732750,China;2. Xichang Satellite Launch Center,Xichang 615000,China;3. Unit 63778 of PLA,Jiamusi 154002,China）
compressed sensing; signal detection; orthogonal matching pursuit;characteristic quantity
51-1267/TN
Considering that current signal detection based on compressed sensing does not effectively useamplitude information of sparse coefficient, this paper proposes a new method. Based on the orthogonalmatching pursuit（OMP） algorithm, the concept of normalized residual is presented through analyzing transformationinformation of normalized residual. A two-dimensional （2D ） signal detection algorithm is proposedin view of normalized residual and normalized remainder. Experiment results show that the effectivethreshold decreases continuously with the loss of signal-to-noise ratio（SNR ）, and the detection probabilitymeets requirement under the condition of -8 dB SNR and 0. 25 compression ratio. The algorithm possessesa good adapt
ISSN:1001-893X
DOI:10.3969/j.issn.1001-893x.2016.08.005