Open AccessLow‐Complexity Symbol Timing Offset Estimation Schemes for OFDM Systems
Author(s) -
Park So Ra,
Jung Young Ho,
Lee Soo In
Publication year - 2002
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.02.0202.0301
Subject(s) - orthogonal frequency division multiplexing , fading , additive white gaussian noise , carrier frequency offset , computer science , synchronization (alternating current) , frequency offset , symbol (formal) , electronic engineering , algorithm , telecommunications , decoding methods , engineering , channel (broadcasting) , programming language
In this paper, we propose three symbol synchronization schemes for Orthogonal Frequency Division Multiplex (OFDM) systems. The cyclic extension preceding OFDM symbols is of decisive importance for these schemes. The first scheme uses the phase‐differential coding of the received OFDM signal. The second and the third schemes use the length of the received OFDM signal. All three schemes make symbol synchronization possible, even though there is a frequency offset in the system. Simulation results show that these schemes can be used to synchronize an OFDM system over AWGN and multi‐path fading channels.