Patent ID: 7359424

Claim:
A spread spectrum communication system comprising: a receiving unit configured to receive a communication quality of a communication channel between an equipment and a counterpart equipment; a transmitting unit configured to transmit data to the counterpart equipment; and a control unit configured to control a transmission band width and a transmission power of a counterpart equipment depending upon said communication quality, wherein when said communication quality is not degraded below a predetermined level and the transmission power is not minimum, the transmission power is lowered, and wherein said control unit comprises: a reception control arithmetic portion configured to receive a reception signal error ratio and to determine and output a receiver gain; a reception gain distribution control portion configured to receive the receiver gain output by the reception control arithmetic portion and to determine and output a reception amplifier control signal to an RF amplifier of the receiving unit and a reception clock control signal to a first clock generator of the receiving unit that is used to generate a first pseudo-noise signal; a transmission control arithmetic portion configured to receive transmission chip rate information and to determine and output a transmission gain; and a transmission gain distribution control portion configured to receive the transmission gain output by the transmission control arithmetic portion and to determine and output a transmission amplifier control signal to a power amplifying portion of the transmitting unit and a transmission clock control signal to a second clock generator of the transmitting unit that is used to generate a second pseudo-noise signal.