A METHOD OF CONTROLLING INITAL POWER RAMP-UP IN CDMA SYSTEMSBY USING SHORT CODES

摘要

A subscriber terminal using a method of controlling initial power ramp-up in CDMA systems by using short codes is disclosed. The subscriber terminal includes having its transmission power regulated, with means for transmitting a periodic signal at an initial predetermined power level and repeatedly retransmitting the periodic signal each retransmission occurring at successively higher power levels, means for receiving a confirmation signal, and means for terminating transmission of the periodic signal in response to the received confirmation and transmitting a call signal which provide for a base station to quickly synchronize to the spreading code used by the subscriber unit. The subscriber terminal using a method of controlling initial power ramp-up in CDMA systems by using short codes is particularly useful for overcoming the problems of power overshoot and interference to other subscriber stations known in the art.