Method and time switch transmit diversity apparatus for time-division duty pressing a CDMA mobile communication system

摘要

Transmission frames each having time slots, and each of the time slots includes two data parts having the same length, a midamble intervening between the data parts, and a guard period for dividing the consecutive time slots. The transmission apparatus modulates the frames into a radio signal with a modulation signal and transmits the modulated radio signal using several antennas. A power amplifier amplifies the radio signal. A controller generates a switching control signal in a guard period of time slots of a frame associated with the radio signal amplified by the power amplifier. A switch switches the amplified radio signal from the power amplifier between two antennas in response to the switching control signal. An independent claim is included for a transmission method in a CDMA mobile communication system, and a power control apparatus.