H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 7/005 (2006.01) H04Q 7/22 (2006.01) H04Q 7/36 (2006.01) H04Q 7/32 (2006.01)
Patent
CA 2206365
A mobile communication system is arranged to have a code divisional multi access system as in the North American standard system and to control a transmission power for reducing an influence of interference of one channel to the others by lowering a control error of the electric power transmitted on an up line. In the base station, a receiving section of a transceiving unit provides a pilot symbol in- phase adding circuit for detecting a carrier signal point represented by an in-phase component and a quadrature component at regular intervals. The amplitude of the detected carrier signal point is corrected by an amplitude correcting circuit by using the previous control values for transmission power read from a memory. Then, a predicting circuit predicts a carrier signal point at a time when the next control for transmission power is executed by using the corrected carrier- signal point. The predicted carrier signal point is compared with a reference signal through a comparing circuit. Next, a transmission power control circuit generates a control value for transmission power at a time when the next control for transmission power is executed, transmits the control value to the mobile devices, and store the control value in the memory. The mobile devices control the transmission power based on the control value.
Corporation Nec
G. Ronald Bell & Associates
LandOfFree
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