跳频系统信噪比估计算法研究

2014 Fourth International Conference on Instrumentation and Measurement, Computer, Communication and Control Pub Date : 2014-09-18 DOI:10.1109/IMCCC.2014.141

Geng Chao, Li Xin, L. Congcong, Liu Wen

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引用次数: 0

摘要

为了解决现有基于自相关矩阵特征值分解算法估计通信系统短信号帧信噪比存在较大估计误差的问题，本文提出了一种改进的盲信噪比估计算法。在原有算法的基础上，引入了利用离散多通道模型重构自相关矩阵的思想。仿真结果表明，在信噪比为0dB ~ 20dB的情况下，原算法估计的信噪比标准差小于0.5dB，而原算法估计的标准差为1.2dB。这对实际应用，特别是对卫星通信具有重要意义。对于目前的卫星信道，如果突发信号的波特率小于2M，生活中流行的60MHz带通采集卡就足以满足要求。

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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Research on SNR Estimation Algorithm in FH System

In order to solve the problem of existing a large estimation error when using the current algorithm which based on the autocorrelation matrix eigenvalue decomposition to estimate the SNR of the short signal frame in the communication system, this paper proposes an improved blind SNR estimation algorithm. Based on the previous algorithm, it introduces an idea of re-constructing the autocorrelation matrix by using the model of discrete multi-channel. Simulation shows that the standard deviations of SNR estimation are less than 0.5dB which are 1.2dB in the previous algorithm when the SNR ranges from 0dB to 20dB. This is very important for practical implications, especially for the satellite communication. For the current satellite channel, if the baud rate of a burst signal is less than 2M, the 60MHz band pass acquisition card which is popular in life is sufficient to meet the requirement.

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来源期刊

2014 Fourth International Conference on Instrumentation and Measurement, Computer, Communication and Control

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