Title :
Maximum likelihood synchronization for OFDM using a pilot symbol: algorithms
Author :
Coulson, Alan J.
Author_Institution :
Commun. Team, Ind. Res. Ltd., Lower Hutt, New Zealand
fDate :
12/1/2001 12:00:00 AM
Abstract :
The design of a pilot symbol for orthogonal frequency-division multiplexing packet detection and synchronization is presented. Algorithms are described for packet detection and for synchronization using maximum likelihood estimation of channel frequency offset, phase offset for coherent detection, and subsample timing offset. The efficacy of the detection and synchronization algorithms is demonstrated experimentally
Keywords :
OFDM modulation; maximum likelihood estimation; packet radio networks; synchronisation; wireless LAN; OFDM; channel frequency offset; coherent detection; maximum likelihood estimation; maximum likelihood synchronization; orthogonal frequency-division multiplexing; packet detection; packet synchronization; phase offset; pilot symbol; subsample timing offset; Delay effects; Frequency division multiplexing; Frequency synchronization; Maximum likelihood detection; Maximum likelihood estimation; Narrowband; OFDM; Parameter estimation; Phase detection; Radio frequency;
Journal_Title :
Selected Areas in Communications, IEEE Journal on
