Title :
A comparison of time and frequency synchronisation algorithms for the European DVB-T system
Author :
Echávarri, J. ; Woodward, M.E. ; Barton, S.K.
Author_Institution :
Dept. of Electr. & Electron. Eng., Bradford Univ., UK
Abstract :
In this paper a comparison of several time and frequency synchronisation algorithms for DVB-T is presented. The goal is to achieve a carrier frequency estimate with an error smaller than 1% of the subcarrier spacing and a timing estimate that avoids ISI in the receiver. Three joint coarse timing and fine frequency estimation algorithms are compared, where the results for the simplest one are similar to the ones for the others with more hardware complexity. The best results for coarse carrier frequency offset are obtained with a data-aided (DA) scheme using the fixed pilot tones. A new method is derived for fine timing estimation for one-path channels. Simulations have been performed for the DVB-T 2K system in three different channels
Keywords :
Rayleigh channels; Rician channels; digital video broadcasting; frequency estimation; synchronisation; timing; DVB-T 2K system; European DVB-T system; ISI; carrier frequency estimate; coarse carrier frequency offset; data-aided scheme; fine frequency estimation; fine timing estimation; fixed pilot tones; frequency synchronisation algorithms; hardware complexity; joint coarse timing estimation; one-path channels; receiver; simulations; subcarrier spacing; time synchronisation algorithms; timing estimate; AWGN; Delay estimation; Digital video broadcasting; Frequency estimation; Frequency synchronization; Hardware; Information systems; OFDM modulation; Time domain analysis; Timing;
Conference_Titel :
Vehicular Technology Conference, 1999. VTC 1999 - Fall. IEEE VTS 50th
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-5435-4
DOI :
10.1109/VETECF.1999.798415
