Title :
OFDM Symbol Synchronization Using Frequency Domain Pilots in Time Domain
Author :
Filippi, Alessio ; Serbetli, Semih
Author_Institution :
Philips Res., Eindhoven
Abstract :
In this paper, we describe and evaluate a novel time synchronization algorithm for OFDM systems robust to channels with long echoes. Most of the OFDM based standards provide known pilots in the frequency domain for channel estimation purposes. The basic idea of our contribution consists of interpreting the frequency domain pilots in the time domain and using them to obtain a rough channel estimation prior to the receiver discrete Fourier transform (DFT). The rough channel estimation is then used to perform the fine time synchronization.
Keywords :
OFDM modulation; channel estimation; discrete Fourier transforms; synchronisation; DFT; OFDM symbol synchronization; channel estimation; discrete Fourier transform; orthogonal frequency division multiplexing; Channel estimation; Delay; Digital video broadcasting; Discrete Fourier transforms; Frequency domain analysis; Frequency synchronization; Multipath channels; OFDM modulation; Robustness; Transmitters;
Conference_Titel :
Vehicular Technology Conference, 2007. VTC-2007 Fall. 2007 IEEE 66th
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-4244-0263-2
Electronic_ISBN :
1090-3038
DOI :
10.1109/VETECF.2007.294
