| 基于统计矩的盲信噪比估计算法性能分析 |
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| 引用本文： | 陆满君,司锡才.基于统计矩的盲信噪比估计算法性能分析[J].弹箭与制导学报,2009,29(4). |
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| 作者姓名： | 陆满君 司锡才 |
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| 作者单位： | 1. 哈尔滨工程大学信息与通信工程学院,哈尔滨,150001;通信系统信息控制技术国家重点实验室,浙江嘉兴,314001
2. 哈尔滨工程大学信息与通信工程学院,哈尔滨,150001 |
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| 摘 要： | 在无线通信中许多算法都需要估计信噪比以获取最优性能.文中研究了非数据辅助的PSK和QAM信号在AWGN信道中的信噪比估计.提出了两种基于统计矩的信噪比估计方法,对于QAM信号而言,高于四阶的统计矩具有更好的估计性能,并且推导了两个高阶统计矩的估计方法.计算机仿真结果表明,文中提出的算法为信噪比估计中统计矩的选择提供了有效的途径,估计性能优于二阶、四阶矩方法等基于统计量的盲信噪比估计方法.
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| 关 键 词： | 无线通信 信噪比估计 统计矩 参数估计 |
Performance Analysis of Moment-based Blind SNR Estimation Algorithm |
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| LU Manjun,SI Xicai.Performance Analysis of Moment-based Blind SNR Estimation Algorithm[J].Journal of Projectiles Rockets Missiles and Guidance,2009,29(4). |
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| Authors: | LU Manjun SI Xicai |
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| Affiliation: | LU Manjun1,2,SI Xicai1(1 School of Information , Communication Engineering,Harbin Engineering University,Harbin 150001,China,2 State Key Laboratory of Information Control Technology for Communication System,Zhejiang Jiaxing 314001,China) |
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| Abstract: | In wireless digital communications,many algorithms require knowledge of the signal-to-noise ratio(SNR) for optimal performance.This paper investigates non-data-aided(NDA) SNR estimation for PSK and QAM transmission over additive white Gaussian noise(AWGN) channels.The SNR estimation based on higher than four-order moments performs better for the QAM signals.And two algorithms based on higher-order moments are proposed.Simulation results show it has better performance than moment-based blind SNR estimator,su... |
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| Keywords: | wireless communication SNR estimation moment parameter estimation |
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