The death queue device and death queue treatment

摘要

PROBLEM TO BE SOLVED: To provide a deskew device which can complete deskewing in a shorter time than possible with conventional technology which corrects the entire skew pattern in all lanes.;SOLUTION: A deskew device, based on a DQPSK modulation system, includes a preskew circuit (13) inside a precoder of a transmitter (10), where I and Q channels respectively have a plurality of lanes consisting of three lanes or more, of which there are two interfering lanes, and a skew between lanes which occurs when signals on plural lanes are transmitted in parallel is eliminated by a deskew process. In the deskew device, when training is transmitted off-line to carry out deskewing, a combination of lanes in which plural I-channel lanes and plural Q-channel lanes have their timings matched are successively identified by transmitting training in one lane at a time.;COPYRIGHT: (C)2012,JPO&INPIT