| 基于瞬时相位的BPSK信噪比估计算法 |
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| 引用本文： | 张晓勇,罗来源.基于瞬时相位的BPSK信噪比估计算法[J].北京航空航天大学学报,2011,37(10):1308-1311. |
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| 作者姓名： | 张晓勇 罗来源 |
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| 作者单位： | 西南电子电信技术研究所,成都,610041;西南电子电信技术研究所,成都,610041 |
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| 摘 要： | 通过对加性高斯白噪声条件下正弦型信号瞬时相位分布情况进行研究,提出了一种新的BPSK(Binary Phase Shift Keying)信噪比估计方法.含噪信号瞬时相位的方差与信噪比之间存在近似线性的一一对应关系,以此为基础通过将含噪信号的估计方差与理论值相比较获得信噪比估计值.该方法直接对基带过采样信号进行处理,不需要事先进行符号定时与同步.使用计算机仿真测试了算法的估计性能,并与高阶累积量方法和子空间分解方法进行了比较,结果表明该算法具有更高的估计精度.
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| 关 键 词： | 信噪比 估计 BPSK 瞬时相位 AWGN |
Instantaneous phase based SNR estimation algorithm for BPSK signals |
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| Zhang Xiaoyong Luo Laiyuan.Instantaneous phase based SNR estimation algorithm for BPSK signals[J].Journal of Beijing University of Aeronautics and Astronautics,2011,37(10):1308-1311. |
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| Authors: | Zhang Xiaoyong Luo Laiyuan |
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| Institution: | Zhang Xiaoyong Luo Laiyuan(Southwest Electronics and Telecommunication Technology Research Institute,Chengdu 610041,China) |
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| Abstract: | By studying of the characteristics of the instantaneous phase of the mixed signals of sinusoidal signal and additive white Gaussian noise(AWGN),a novel signal-to-noise ratio(SNR) estimation algorithm for binary phase shift keying(BPSK) signal was proposed.There is a nearly linear one to one relationship between the variance of instantaneous phase and the SNR,based on which the estimation of SNR was acquired by comparing the variance of instantaneous phase of the received signal with the theoretical one.The ... |
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| Keywords: | signal to noise ratio estimation binary phase shift keying instantaneous phase additive white Gaussian noise |
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