POWER CONTROL BIT INSERTING METHOD OF CDMA MOBILE COMMUNICATION SYSTEM

摘要

PURPOSE: A power control bit inserting method of a CDMA mobile communication system is provided to control a power change of a terminal moving at a high speed by performing a high speed closed loop power control at various speeds. CONSTITUTION: In inserting a shaped power control bit, a basic time unit is 1.25msec. During 1.25msec, total 6 signal transmission paths(f(I),f1(Q),f2(I),f2(Q),f3(I),f3(Q)) can be created by adding three frequencies(f1-f3) and two signal transmission paths in the three frequencies. Each signal transmission path consists of 12 bits and creates certain bit strings during 1.25msec. 1.25msec means a power control group in IS-65 standard. Power control bits(P1-P6) are inserted one by one respectively into six portions divided from the power control group 1.25msec. In this case, one power control bit is inserted at every 1.25/6msec time, so that a frequency of the power control bit can be increased up to 4800Hz, six times of 800Hz.