SNR estimation in frequency domain

被引：0
|
作者：
Hong, DK [1 ]
Park, CH [1 ]
Ju, MC [1 ]
Cho, JW [1 ]
机构：
[1] KETI, Wireless PAN Technol Project Off, Pundang Gu, Sungnam 463771, South Korea
来源：
IEICE TRANSACTIONS ON COMMUNICATIONS | 2003年 / E86B卷 / 03期
关键词：
SNR; DFT; circular convolution; frequency offset;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Beaulieu has proposed four signal-to-noise ratio (SNR) estimators for quadrature phase shift keying (QPSK) signaling in time domain [2]. In this letter, we propose SNR estimators for QPSK signaling in frequency domain. A discrete Fourier transform (DFT) algorithm is used for the frequency domain analysis of the received signal. The frequency spectrum enables biased SNP, estimation in the frequency domain. Circular convolution is used for robust and fast SNR estimation when the received signal exhibits a frequency offset. Simulation results show that the new estimators present good performance even when the received signal exhibits a large frequency offset.
引用
收藏
页码：1174 / 1176
页数：3
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