Title :
A novel OFDM frame synchronization scheme
Author :
Zhang, J.L. ; Wang, M.Z. ; Zhu, W.L.
Author_Institution :
Dept. of Electron. & Inf. Eng., Hong Kong Polytech. Univ., Kowloon, China
fDate :
29 June-1 July 2002
Abstract :
Frame synchronization is important for an orthogonal frequency division multiplexing (OFDM) system. A novel frame synchronization method based on m-sequences for OFDM systems is proposed. An m-sequence is added directly to OFDM signals in the time domain. By utilizing the autocorrelation characteristics of maximal length shift-register sequences (m-sequences), fast frame synchronization can be obtained over slowly fading radio channels. In addition, if we combine the in-sequences based method with the guard interval based method, further improvement can be obtained over fading channels.
Keywords :
OFDM modulation; correlation methods; fading channels; m-sequences; synchronisation; OFDM frame synchronization; OFDM signals; OFDM system; autocorrelation characteristics; guard interval based method; m-sequences; maximal length shift-register sequences; orthogonal frequency division multiplexing; slowly fading radio channels; time domain; Autocorrelation; Digital audio broadcasting; Digital video broadcasting; Educational institutions; Fading; Fast Fourier transforms; Frequency synchronization; OFDM; Radio communication; Robustness;
Conference_Titel :
Communications, Circuits and Systems and West Sino Expositions, IEEE 2002 International Conference on
Print_ISBN :
0-7803-7547-5
DOI :
10.1109/ICCCAS.2002.1180585
