Watson Cole Stevens Davis, P.L.L.C.
CDMA/TDD Radio Communication System
 In addition to a structure of a conventional CDMA/TDD radio communication system, a base station includes a pilot signal generating circuit for generating a pilot signal that has a constant transmission power level and is known in mobile units and a pilot channel spreading circuit for transmitting the pilot signal to the mobile units through a transmission line. Each of the mobile units includes a pilot signal reception level measuring circuit for measuring reception power of the received pilot signal and a transmission power control circuit for controlling transmission power of a power amplification circuit based on the measured reception power of the received pilot signal. 
Matsushita Electric Industrial Co., Ltd.
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Masatoshi Kazuyuki Takayuki Osamu
Watanabe Miya Nakano Kato