Title :
A new estimation scheme for frequency and timing offsets in OFDM systems
Author :
Chang, Sekchin ; Powers, Edward J.
Author_Institution :
Dept. of Electr. & Comput. Eng., Texas Univ., Austin, TX, USA
Abstract :
Orthogonal frequency division multiplexing (OFDM) is a possible candidate for high-rate data transmission in wireline and wireless communications. However, OFDM systems are very sensitive to frequency and timing offsets. The sensitivity causes the system performance to degrade drastically. Therefore, in this paper we propose a new estimation scheme for frequency and timing offsets in OFDM systems. This estimation is based on an ambiguity function. Simulation results show that frequency and timing offsets are estimated very accurately using our presented method
Keywords :
OFDM modulation; delay estimation; frequency estimation; OFDM systems; ambiguity function; estimation scheme; frequency; high-rate data transmission; orthogonal frequency division multiplexing; system performance; timing offsets; wireless communication; wireline communications; Bandwidth; Degradation; Doppler shift; Frequency estimation; Frequency synchronization; Interference; OFDM modulation; Power engineering computing; Timing; Wireless sensor networks;
Conference_Titel :
Vehicular Technology Conference, 2000. IEEE-VTS Fall VTC 2000. 52nd
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-6507-0
DOI :
10.1109/VETECF.2000.886136
