Title :
SNR estimation in frequency domain using circular correlation
Author :
Hong, Dae-Ki ; Park, Cheol-Hee ; Ju, Min-Chul ; Youn, Kyu-Jung ; Jun, Sun-Do ; Cho, Jin-Woong
Author_Institution :
Wireless PAN Technol. Project Office, Korea Electron. Technol. Inst., South Korea
fDate :
12/5/2002 12:00:00 AM
Abstract :
Beaulieu et al. (2000) proposed four signal-to-noise ratio (SNR) estimators in the time domain. The authors propose SNR estimators for an M-ary phase shift keying (MPSK) modulation in the frequency domain. A discrete Fourier transform (DFT) algorithm is used for the frequency domain analysis of the received signal. The frequency spectra enable biased SNR estimation. Circular correlation is used for robust and fast SNR estimation when the frequency offset occurs at the received signal. Simulation results show that the new estimators present good performance even when a large frequency offset occurs.
Keywords :
correlation theory; discrete Fourier transforms; frequency-domain analysis; noise; parameter estimation; phase shift keying; signal processing; DFT algorithm; M-ary phase shift keying modulation; MPSK modulation; SNR estimation; circular correlation; discrete Fourier transform algorithm; frequency domain; frequency offset; frequency spectra; received signal; signal-to-noise ratio;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20021178
