CDMA TRANSMITTER FOR GENERATING SPECIFIC PILOT SIGNAL FOR CONVERTING MODES AND WIRELESS COMMUNICATION EQUIPMENT CORRESPONDING TO THE SAME

摘要

PURPOSE: A code division multiple access(CDMA) transmitter for generating a specific pilot signal for converting modes is provided to automatically convert every calling mode of all wireless communication equipments into vibration modes or optical modes, so as to prevent noises caused by calling sounds. CONSTITUTION: An antenna receives code division multiple access(CDMA) forward channel signals from adjacent base stations. A demodulator(240) obtains a system time for adjusting system synchronizations from the CDMA forward channel signals. A pilot channel generator(280) generates pilot channel signals having specific pseudo-noise(PN) offsets which are never received from the adjacent base stations, by adjusting the pilot channel signals to the system time. A radio frequency(RF)/intermediate frequency(IF) transmitting block(230) transmits the pilot signals all over CDMA frequency bands, to make all CDMA terminals existing within a coverage receive the pilot signals. A controller(250) directs all the CDMA terminals existing in areas capable of receiving the pilot signals, to convert modes into calling modes.