Title :
Maximum likelihood frequency recovery for OFDM signals transmitted over multipath fading channels
Author :
Chiavaccini, Eugenio ; Vitetta, Giorgio M.
Author_Institution :
Dept. of Inf. Eng., Modena Univ., Italy
Abstract :
In this paper a novel feedback frequency synchronizer for OFDM signals transmitted over multipath fading channels is described. Its derivation is based on maximum likelihood (ML) estimation techniques and assumes an approximate statistical knowledge of the communication channel. The performance of the proposed algorithm is assessed by computer simulation and is compared with that provided by other synchronization algorithms and with Cramer-Rao bounds
Keywords :
OFDM modulation; fading channels; frequency estimation; maximum likelihood estimation; multipath channels; synchronisation; Cramer-Rao bounds; OFDM signals; approximate statistical knowledge; communication channel; computer simulation; feedback frequency synchronizer; maximum likelihood estimation; maximum likelihood frequency recovery; multipath fading channels; Additive noise; Fading; Feedback; Feeds; Frequency estimation; Frequency synchronization; Maximum likelihood estimation; OFDM; Oscillators; Vectors;
Conference_Titel :
Global Telecommunications Conference, 2001. GLOBECOM '01. IEEE
Conference_Location :
San Antonio, TX
Print_ISBN :
0-7803-7206-9
DOI :
10.1109/GLOCOM.2001.965714
