| 摘要 |
PURPOSE:To enable the diversity transmission and reception by complex- modulating composite signals for telephone, data or the like with the use of the identical radio carrier in the movable body communication with a time- compressed signal on a frame time slot. CONSTITUTION:With a time slot of a radio channel which is allocated between a mobile radio equipment 100 and a radio base station 30, the amplitude of a telephone signal is compressed by a syllabic compressor to modulate the frequency, and the modulated signal is transmitted and received by compressing the amplitude of the same telephone signal again by the syllabic compressor. A large multiple load gain can be obtained, the transmission power can be reduced without expanding the required band width, the interference to the adjacent radio channel can be prevented in advance, and the service can be improved because of the effective use of the frequency. |
