Title :
Blind frequency offset and delay estimation of linearly modulated signals using second order cyclic statistics
Author :
Manimohan, Vel B. ; Fitzgerald, William J.
Author_Institution :
Dept. of Eng., Cambridge Univ., UK
Abstract :
A blind (non-data aided), open loop, joint frequency offset and delay estimation algorithm for a linearly modulated signal in additive stationary noise is developed by exploiting the cyclostationarity of the signal. By considering the sample cyclic autocorrelation function of the received signal and the probability distribution of the estimation error, a general linear model representation of the problem is obtained from which the parameters are estimated using a Bayesian framework. The algorithm is then extended to a multiple signals of interest scenario. The algorithm is simulated for both single and multiple BPSK signals
Keywords :
Bayes methods; Gaussian noise; correlation methods; delays; error statistics; frequency estimation; phase shift keying; probability; signal sampling; statistical analysis; white noise; AWGN; Bayesian framework; additive stationary noise; blind frequency offset estimation; cyclostationary signal; delay estimation; estimation error; general linear model representation; linearly modulated signals; multiple BPSK signals; nondata aided estimation algorithm; open loop estimation; parameter estimation; probability distribution; received signal; sample cyclic autocorrelation function; second order cyclic statistics; single BPSK signal; Additive noise; Autocorrelation; Bayesian methods; Chirp modulation; Delay estimation; Estimation error; Frequency estimation; Frequency locked loops; Parameter estimation; Probability distribution;
Conference_Titel :
Acoustics, Speech and Signal Processing, 1998. Proceedings of the 1998 IEEE International Conference on
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-4428-6
DOI :
10.1109/ICASSP.1998.681618
