Title :
A method of carrier frequency estimation based on spectral analysis of digital communication signal
Author :
Sun, Xiaojie ; Feng, Quanyuan
Author_Institution :
Inst. of Microelectron., Southwest Jiaotong Univ., Chengdu, China
Abstract :
For digital communication signal carrier frequency estimation problem, proposing a novel algorithm to improve the accuracy in frequency estimation by transforming the character of cyclic autocorrelation correlation to frequency domain to highlight the effective signal spectral, and tuning the effective carrier frequency spectrum. When the carrier frequency is under 150K, simulation results show that the estimation error is less than 0.08% for ASK and FSK on condition that the SNR is not less than -12dB, while the it is not more than 0.05% for BPSK and QPSK respectively when the SNR is not less than-8dB and 6dB. With increasing of SNR, the estimation results will improve, suiting for practical application.
Keywords :
amplitude shift keying; correlation methods; digital communication; frequency estimation; frequency shift keying; frequency-domain analysis; quadrature phase shift keying; ASK; BPSK; FSK; QPSK; carrier frequency estimation; cyclic autocorrelation; digital communication signal; estimation error; frequency domain; signal spectral; spectral analysis; Frequency modulation; Autocorrelation; Carrier frequency estimation; Spectral tuning;
Conference_Titel :
Computer Science and Information Technology (ICCSIT), 2010 3rd IEEE International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-5537-9
DOI :
10.1109/ICCSIT.2010.5563979
