An Algorithm of SNR Estimation for Non-Constant Envelope Signal in the AWGN Channel

FAN Hai-bo; CHEN Jun; CAO Zhi-gang

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An Algorithm of SNR Estimation for Non-Constant Envelope Signal in the AWGN Channel

更新时间：2025-07-16

- An Algorithm of SNR Estimation for Non-Constant Envelope Signal in the AWGN Channel
- Acta Electronica Sinica Vol. 30, Issue 9, Pages: 1369-1371(2002)
- 作者机构：
  
  清华大学电子工程系,北京,100084
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN911.23
- Published：2002
- 稿件说明：
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FAN Hai-bo, CHEN Jun, CAO Zhi-gang. An Algorithm of SNR Estimation for Non-Constant Envelope Signal in the AWGN Channel[J]. Acta Electronica Sinica, 2002, 30(9): 1369-1371.
DOI：

FAN Hai-bo, CHEN Jun, CAO Zhi-gang. An Algorithm of SNR Estimation for Non-Constant Envelope Signal in the AWGN Channel[J]. Acta Electronica Sinica, 2002, 30(9): 1369-1371. DOI：

摘要

本文提出一种利用信号自相关矩阵的奇异值分解(SVD)对加性高斯白噪声(AWGN)信道下非恒包络信号信噪比的盲估计算法

并作了详细理论分析.通过对该算法进行计算仿真

结果表明:该算法性能稳定

对MPSK、MQAM信号在实际信噪比为1~20dB时

估计误差小于0.5dB.

Abstract

In this paper a new blind estimation algorithm is proposed which uses Singular value decomposition of signal self-correlation matrix to estimate Signal-Noise-Ratio (SNR) of non-constant envelope signal over AWGN channel.The theoretic analysis is also given.Computer simulation results show that the performance of this algorithm is robust and the estimation error is less than 0.5dB when the actual SNR ranges from 1 to 20dB for MPSK and MQAM signals.

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