Title :
Blind frequency synchronisation for OFDM systems with pulse shaping
Author :
Manimohan, V.B. ; Fitzgerald, W.J.
Author_Institution :
Dept. of Eng., Cambridge Univ., UK
Abstract :
In multi-carrier systems, small carrier frequency offsets result in significant degradation of performance and this offset should be compensated before demodulation can be performed. We consider a generic multi-carrier system with pulse shaping and estimate the frequency offset by exploiting the cyclostationarity of the received signal. By transforming the time domain signal to the cyclic correlation domain we are able to estimate the frequency offset without the aid of pilot symbols or the cyclic prefix. The Bayesian framework is used to obtain the estimate and we show how we can simplify the estimation process
Keywords :
Bayes methods; OFDM modulation; correlation methods; demodulation; frequency estimation; pulse shaping; synchronisation; Bayesian framework; OFDM systems; blind frequency synchronisation; carrier frequency offsets; cyclic correlation domain; demodulation; frequency offset compensation; frequency offset estimation; multi-carrier systems; pulse shaping; received signal cyclostationarity; time domain signal; Bandwidth; Colored noise; Degradation; Fading; Frequency estimation; Frequency synchronization; OFDM modulation; Pulse modulation; Pulse shaping methods; Signal processing;
Conference_Titel :
Communications, 1999. ICC '99. 1999 IEEE International Conference on
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-5284-X
DOI :
10.1109/ICC.1999.767918
