| 一种新的基于能量检测的突发信号存在性检测算法 |
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| 引用本文： | 隋丹,葛临东,屈丹.一种新的基于能量检测的突发信号存在性检测算法[J].信号处理,2008,24(4). |
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| 作者姓名： | 隋丹 葛临东 屈丹 |
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| 作者单位： | 解放军信息工程大学信息工程学院,河南郑州,450002 |
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| 摘 要： | 本文首先推导了复高斯白噪声信道中未知噪声方差时基于短时能量的突发信号检测算法检测概率和虚检概率的表达式.为了进一步提高检测速度,又提出了一种基于主分量分析的短时能量检测算法,能够用较少的观测数据获得与原算法相当的检测结果,在不同信噪比下对不同调制类型的突发信号进行了仿真,验证了算法的可行性和有效性.
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| 关 键 词： | 存在性检测 能量检测 主分量分析 性能分析 |
A Novel Presence Detection Algorithm Based on the Energy Detection for Burst Signals |
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| SUI Dan,GE Lin-dong,QU Dan.A Novel Presence Detection Algorithm Based on the Energy Detection for Burst Signals[J].Signal Processing,2008,24(4). |
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| Authors: | SUI Dan GE Lin-dong QU Dan |
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| Abstract: | The probabilities of detection and false alarm are derived for short time energy based presence detection algorithm for burst signals in the complex Additive White Ganssian Noise (AWGN).A new Principal Component Analysis (PCA)-based energy de- tection algorithm is also proposed in this paper,which can achieve a comparable result with greatly reduced computational complexity. Simulations performed for burst signals employing different modulation schemes under various Signal-to-Noise Ratios (SNR) verify the feasibility and effectiveness of the proposed algorithm. |
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| Keywords: | presence detection energy detection principal component analysis (PCA) performance analysis |
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