光通信研究Issue(4)：8-11,41,5.DOI:10.13756/j.gtxyj.2016.04.003
一种正交频分复用信号信噪比估计方法
A Novel Estimation Method for Signal-to-Noise Ratio of OFDM Signal
摘要
Abstract
Aiming at the high computation load and the uncertainty of step chosen in traditional OFDM Signal-to-Noise Ratio (SNR)estimation method,a novel method is proposed to estimate the SNR of OFDM.We firstly use the correlation function to discriminate the two types of guard interval.Then we propose two different methods to estimate the SNR of OFDM signal according to the structure characteristic of two types guard interval.Finally,the result of j udgment is combined with the corre-sponding SNR estimation method to realize the SNR estimation of OFDM.The experimental results show that the proposed method don't need auxiliary data and the computation load is low with satisfied SNR estimation performance.关键词
正交频分复用/循环前缀/相关函数/盲识别/信噪比Key words
OFDM/cyclic prefix/correlation function/blind recognition/SNR分类
信息技术与安全科学引用本文复制引用
张海川,雷迎科..一种正交频分复用信号信噪比估计方法[J].光通信研究,2016,(4):8-11,41,5.基金项目
国家自然科学基金资助项目(61272333) （61272333）
国防科技重点实验室基金资助项目(9140C130502140C13068) （9140C130502140C13068）
解放军总装备部预研项目(9140A33030114JB39470) （9140A33030114JB39470）
安徽省自然科学基金资助项目(1308085QF99) （1308085QF99）
