Synchronization with DMT modulation

In a digital transmission system, synchronization is an essential receiver function. Accurate timing information must be known to the demodulator in o rder to produce reliable estimates of the transmitted data sequence. In thi s article, synchronization for discrete multitone transmission is examined. The effect of imperfect timing on the receiver performance is investigated . An overview of timing estimation and correction circuits based on data-ai ded and non-data-aided algorithms derived from maximum-likelihood estimatio n theory is given.