초록 ▼

The radiotelephone demodulates the information received from the base station. The symbol-energy-to-noise-density (E.sub.s /N.sub.o) is estimated over a specified duration. This estimate is compared to a target E.sub.s /N.sub.o value. The target is updated periodically in order to maintain the quali

The radiotelephone demodulates the information received from the base station. The symbol-energy-to-noise-density (E.sub.s /N.sub.o) is estimated over a specified duration. This estimate is compared to a target E.sub.s /N.sub.o value. The target is updated periodically in order to maintain the quality of service. If the measured E.sub.s /N.sub.o is greater than the target, the radiotelephone sends a power down command over a reverse power control signaling channel to the base station. If the measured E.sub.s /N.sub.o is less than the target, the radiotelephone sends a power up command to the base station over the same channel. A multi-carrier transceiver system for a code division multiple access system includes circuitry for up-converting processed user data to a plurality of frequency channels. The transceiver, in some embodiments, further includes a plurality of antennas for transmitting each channel of user data. A method of using the multi-carrier system includes processing user data, and then transmitting the data at different frequency channels, and when necessary, transmitting the data through different antennas separated in space and/or having orthogonal polarization.

대표청구항 ▼

[ We claim:] [1.] A method for controlling the transmission power of a base station by a radiotelephone, the method comprising the steps of:estimating a symbol-energy-to-noise-density value for each of a plurality of signals received over a plurality of carriers from the base station;averaging the p

[ We claim:] [1.] A method for controlling the transmission power of a base station by a radiotelephone, the method comprising the steps of:estimating a symbol-energy-to-noise-density value for each of a plurality of signals received over a plurality of carriers from the base station;averaging the plurality of estimated symbol-energy-to-noise-density values;comparing the average symbol-energy-to-noise-density value to a target value; andtransmitting a power control command over a reverse power control signaling channel to the base station, the power control command instructing the base station to adjust its transmit power in response to the comparison.