Title :
Synchronization with DMT modulation
Author :
Pollet, Thierry ; Peeters, Miguel
Author_Institution :
Res. Center, Alcatel, Antwerp, Belgium
fDate :
4/1/1999 12:00:00 AM
Abstract :
In a digital transmission system, synchronization is an essential receiver function. Accurate timing information must be known to the demodulator in order to produce reliable estimates of the transmitted data sequence. In this article, synchronization for discrete multitone transmission (DMT) is examined. The effect of imperfect timing on the receiver performance is investigated. An overview of timing estimation and correction circuits based on data-aided and non-data-aided algorithms derived from maximum-likelihood estimation theory is given
Keywords :
data communication; digital communication; maximum likelihood estimation; modulation; receivers; synchronisation; timing circuits; DMT modulation; OFDM; accurate timing information; data-aided algorithms; demodulator; digital transmission system; discrete multitone transmission; imperfect timing; maximum-likelihood estimation theory; nondata-aided algorithms; receiver performance; synchronization; timing correction circuits; timing estimation circuits; transmitted data sequence; Clocks; Delay estimation; Error correction; Frequency synchronization; OFDM modulation; Sampling methods; Signal generators; Timing; Transfer functions; Transmitters;
Journal_Title :
Communications Magazine, IEEE
