公开(公告)号：US06559894B2

公开(公告)日：2003-05-06

申请号：US09879662

申请日：2001-06-11

申请人： Jimmy Kazuhiro Omura ,  Thomas Ross Henderson ,  Steve Dabell ,  Mark Robert Peting

发明人： Jimmy Kazuhiro Omura ,  Thomas Ross Henderson ,  Steve Dabell ,  Mark Robert Peting

IPC分类号： H04N5217

CPC分类号： H04L1/0059 ,  H04L1/0071 ,  H04L25/03133 ,  H04L2025/03382 ,  H04L2025/0377

摘要： A block-adaptive method of performing equalization on a signal received over a broadcast system, includes providing a set of predetermined symbols that correspond to symbols in a data field synchronization segment of a data field having a plurality of segments wherein a data frame having at least two of these data fields is transmitted over the signal in the broadcast system during a block-time interval, correlating complex samples of the signal with the set of predetermined symbols to extract a corresponding impulse response during the block-time interval, selecting a phase identifying the start of the block-time interval from the correlated complex samples, estimating an equalizer filter using the set of predetermined symbols and an initial data field synchronization segment provided at the start of the block-time interval, updating the equalizer filter using subsequent complex samples of the signal to extract a subsequent impulse response and correlate with a reference segment, wherein the reference segment corresponds to either the predetermined symbol sequence or a partial decision feedback segment.