CONTROL SIGNAL FOR RECEIVER,SYNCHRONIZING DEVICE,EQUALIZING DEVICE SYNCHRONIZING PROCEDURE AND CORRESPONDING RECEIVER

摘要

PURPOSE: To obtain synchronizing technique capable of limiting resources required both in frequencies and time by using a control signal formed by parallelly arranging the signals of two elements which are the same in continuous time and symmetrical hourly. CONSTITUTION: This synchronizing signal enables the frequency and the time synchronization of a receiver. This signal includes a first pseudo random sequences PN21 (O to Nc-1) (direct sequence) transmitted periodically. However, this first sequence PN21 is replaced with a second sequence PN (Nc-1 to 0) 22 (inversion sequence) obtained by time symmetry based on a first sequence PN at regular intervals. This symmetrical second sequence PN22 can be obtained at a binary level and can directly be obtained at a modulation signal level. This second sequence is periodically inserted to a pilot signal with frequency according to the requested value of a system. In this case, the direct sequence 21 and the inversion sequence 22 appear alternately at a transmission sequence.