METHOD OF CALCULATING FRAMES IN ASYNCHRONOUS CODE DIVISION MULTIPLE ACCESS MOBILE COMMUNICATION SYSTEM

摘要

PURPOSE: A method of calculating frames in an asynchronous CDMA mobile communication system is provided to supply an exact 10msec interrupt signal and a frame calculating result to a system every 10msec, thereby calculating the frames without errors and generating interrupt signals at an exact time point. CONSTITUTION: A base station generates a 10Hz clock signal and an 8Khz clock signal. The base station generates a bit for showing that a new 10msec frame is generated, when the two clock signals are simultaneously generated. The base station generates bits for showing what number the 10msec frame is generated, whenever the 8Khz clock signal is generated. The base station converts serial data showing the number of frames into parallel data by shifting the serial data. The base station stores the parallel data in a latch.