DEVICE AND METHOD FOR OBTAINING SYNCHRONIZATION OF DIFFUSED SIGNAL BY USING MULTIPLE CHANNEL SIGNAL IN DIGITAL COMMUNICATION SYSTEM

摘要

PURPOSE: A device and method for obtaining synchronization of a diffused signal by using a multiple channel signal in a digital communication system are provided so that a simple circuit can obtain code synchronization for a short time by using an access information preset code. CONSTITUTION: An access channel code generator(31) generates an inverse pilot channel code and an access information channel code from an inverse PN(Pseudo Noise) code. An access information channel preset code generator(32) generates an access information channel preset code included in the access information channel from the inverse PN code. Reception signal generators(33,34) generate an access channel reception signal from the inverse pilot channel code and the access information channel code. An inverse pilot channel correlator(35) outputs a pilot channel correlation coefficient by calculating a correlation coefficient between the inverse pilot channel code and the access channel reception signal. An access information channel correlator(36) outputs an access channel correlation coefficient by calculating the access information channel code and the access channel reception signal by considering the access information channel preset code. An energy calculator(38) outputs code correlation energy according to the pilot channel correlation coefficient and the access channel correlation coefficient. A code synchronization controller(39) detects code synchronization.