Title :
Spectrum averaging carrier frequency estimation
Author :
Zaplata, Filip ; Kasal, Miroslav
Author_Institution :
Dept. of Radio Electron., Brno Univ. of Technol., Brno, Czech Republic
Abstract :
Carrier recovery system is a very important part of the digital radio frequency receivers. Tracking frequency estimators are able to compensate Doppler shifts of the signal coming from fast moving objects. There are many algorithms based on several approaches, but the noisy environment stays the big issue. The paper introduces novel approach to the frequency estimation suited for weak suppressed carrier BPSK signal even below the noise level. Both the open loop version suitable for acquisition and the closed loop version with narrow band input more convenient for tracking are described.
Keywords :
Doppler shift; frequency estimation; phase shift keying; radio receivers; radio spectrum management; signal denoising; signal detection; Doppler shift compensation; carrier recovery system; closed loop version; digital radio frequency receivers; noise level; noisy environment; open loop version; spectrum averaging carrier frequency estimation; tracking frequency estimators; weak suppressed carrier BPSK signal; Binary phase shift keying; Filtering theory; Frequency estimation; Frequency locked loops; Frequency modulation; Matched filters; Noise level; Closed loop frequency estimator; Maximum likelihood frequency estimator; Open loop frequency estimator;
Conference_Titel :
Radioelektronika (RADIOELEKTRONIKA), 2015 25th International Conference
Conference_Location :
Pardubice
Print_ISBN :
978-1-4799-8117-5
DOI :
10.1109/RADIOELEK.2015.7129027
