基于瞬时相位的BPSK信号信噪比估计

2009 IEEE International Conference on Intelligent Computing and Intelligent Systems Pub Date : 2009-12-28 DOI:10.1109/ICICISYS.2009.5357735

Zhang Xiao-yong, Luo Lai-yuan

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引用次数: 2

摘要

提出了一种新的AWGN信道信噪比估计算法。研究了BPSK信号的信噪比与瞬时相位分布的关系，并根据这种关系构造了信噪比估计器。用相关系数来判断理论DIP与接收信号DIP的相似度。准确的符号同步是大多数信噪比估计器的基本前提，但本文提出的估计器不需要精确的符号同步。使用偏差和均方根误差(RMSE)来评估估计器的性能。蒙特卡罗计算机仿真结果表明了该估计器的可靠性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Instantaneous phases based SNR estimator for BPSK signals

A novel algorithm for Signal-power-to-Noise-power ratio (SNR) estimation in AWGN channel is proposed in this paper. The relationship between SNR and the distribution of instantaneous phase (DIP) of BPSK signal is investigated, and the SNR estimator is constructed according to this relationship. Correlation coefficients are used to judge the similarity of the DIP between the theoretical one and the one of the received signal. Accurate symbol synchronization, which is the essential prerequisite for most SNR estimators, is not needed for the estimator proposed in this paper. Bias and root-mean-squared error (RMSE) are used to evaluate the performance of the estimator. The results of the Monte Carlo computer simulations show the credible performances of the estimator.

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来源期刊

2009 IEEE International Conference on Intelligent Computing and Intelligent Systems

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