Title :
Enhanced symbol synchronization method for OFDM system in SFN channels
Author :
Palin, Arto ; Rinne, Jukka
Author_Institution :
Digital Media Inst., Tampere Univ. of Technol., Finland
Abstract :
A new symbol synchronization method for OFDM-system is presented. This method is based on a double correlation structure. Also the method that will compensate the effect of inaccurate FFT position is presented. The presented methods will improve the accuracy of the symbol synchronization in channels that have long and strong echoes, as can be the case with single frequency network (SFN). However, they are also usable in Ricean and Rayleigh type of channels. Furthermore, when the presented symbol synchronization method is combined with the compensator that corrects the inaccurate FFT position, there is no need for fine synchronization
Keywords :
OFDM modulation; Rayleigh channels; Rician channels; correlation methods; digital audio broadcasting; digital video broadcasting; fast Fourier transforms; synchronisation; DAB; DVB-T systems; OFDM system; Rayleigh channel; Rician channel; SFN channels; compensator; digital audio broadcasting; digital terrestrial video broadcasting; double correlation structure; enhanced symbol synchronization method; inaccurate FFT position compensation; large delay spreads; multipath environment; orthogonal frequency division multiplexing; single frequency network; symbol synchronization accuracy; Bit error rate; Correlators; Delay; Detection algorithms; Digital audio broadcasting; Digital modulation; Digital video broadcasting; Frequency synchronization; OFDM modulation; Robustness;
Conference_Titel :
Global Telecommunications Conference, 1998. GLOBECOM 1998. The Bridge to Global Integration. IEEE
Conference_Location :
Sydney,NSW
Print_ISBN :
0-7803-4984-9
DOI :
10.1109/GLOCOM.1998.776496
