최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
DataON 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Edison 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0340939 (2008-12-22) |
등록번호 | US-9564963 (2017-02-07) |
발명자 / 주소 |
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출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 | 피인용 횟수 : 0 인용 특허 : 637 |
A receiver receives signals and noise over a frequency spectrum of a desired received signal. The desired received signal is spread using code division multiple access. The received signals and noise are demodulated to produce a demodulated signal. The demodulated signal is despread using a code unc
A receiver receives signals and noise over a frequency spectrum of a desired received signal. The desired received signal is spread using code division multiple access. The received signals and noise are demodulated to produce a demodulated signal. The demodulated signal is despread using a code uncorrelated with a code associated with the desired received signal. A power level of the despread demodulated signal is measured as an estimate of the noise level of the frequency spectrum.
1. A code division multiple access (CDMA) subscriber unit comprising: circuitry configured to receive at least one power control command on a forward channel, wherein the at least one power control command indicates either an increase or decrease in transmission power level; andcircuitry configured
1. A code division multiple access (CDMA) subscriber unit comprising: circuitry configured to receive at least one power control command on a forward channel, wherein the at least one power control command indicates either an increase or decrease in transmission power level; andcircuitry configured to adjust transmission power levels, of both a first reverse channel including traffic data and a second reverse channel including pilot bits, based on a value of the at least one power control command, wherein the transmission power levels of the first reverse channel and the second reverse channel are different. 2. The CDMA subscriber unit of claim 1, wherein the transmission power levels, of both the first reverse channel and the second reverse channel, are adjusted by a step size in response to the at least one power control command. 3. The CDMA subscriber unit of claim 1, further comprising circuitry configured to transmit, in bursts, a third reverse channel including signaling information. 4. The CDMA subscriber unit of claim 1, further comprising circuitry configured to transmit a third reverse channel including control information, wherein the third reverse channel has a different transmission power level than the first reverse channel. 5. The CDMA subscriber unit of claim 1, further comprising circuitry configured to transmit a third reverse channel including traffic data, wherein the third reverse channel has a different transmission power level than the first reverse channel. 6. The CDMA subscriber unit of claim 1, further comprising circuitry configured to transmit a third reverse channel including control information and a fourth reverse channel including traffic data, wherein at least one of the third or fourth reverse channels has a different transmission power level than the first reverse channel. 7. The CDMA subscriber unit of claim 6, wherein a data rate of the first reverse channel and the fourth reverse channel are different. 8. The CDMA subscriber unit of claim 1, wherein a gain of the second reverse channel is different from a gain of the first reverse channel. 9. A method implemented in a code division multiple access (CDMA) subscriber unit, the method comprising: receiving at least one power control command on a forward channel, wherein the at least one power control command indicates either an increase or a decrease in transmission power level; andadjusting transmission power levels, of both a first reverse channel including traffic data and a second reverse channel including pilot bits, based on a value of the at least one power control command, wherein the transmission power levels of the first reverse channel and the second reverse channel are different. 10. The method of claim 9, wherein the transmission power levels, of both the first reverse channel and the second reverse channel, are adjusted by a step size in response to the at least one power control command. 11. The method of claim 9, further comprising transmitting, in bursts, a third reverse channel including signaling information. 12. The method of claim 9, further comprising transmitting a third reverse channel including control information, wherein the third reverse channel has a different transmission power level than the first reverse channel. 13. The method of claim 9, further comprising transmitting a third reverse channel including traffic data, wherein the third reverse channel has a different transmission power level than the first reverse channel. 14. The method of claim 9, further comprising transmitting a third reverse channel including control information and a fourth reverse channel including traffic data, wherein at least one of the third or fourth reverse channels has a different transmission power level than the first reverse channel. 15. The method of claim 14, wherein a data rate of the first reverse channel and the fourth reverse channel are different. 16. The method of claim 9, wherein a gain of the second reverse channel is different from a gain of the first reverse channel. 17. A code division multiple access (CDMA) subscriber unit comprising: an antenna; anda modem, operatively coupled to the antenna; andthe antenna and the modem are configured to receive at least one power control command on a forward channel, wherein the at least one power control command indicates either an increase or decrease in transmission power level; andthe modem is further configured to adjust transmission power levels, of both a first reverse channel including traffic data and a second reverse channel including pilot bits, based on a value of the at least one power control command wherein the transmission power levels of the first reverse channel and the second reverse channel are different; andthe modem and the antenna are configured to transmit the first reverse channel and the second reverse channel. 18. The CDMA subscriber unit of claim 17, wherein the transmission power levels, of both the first reverse channel and the second reverse channel, are adjusted by a step size in response to the at least one power control command. 19. The CDMA subscriber unit of claim 17, wherein the modem and the antenna are further configured to transmit, in bursts, a third reverse channel including signaling information. 20. The CDMA subscriber unit of claim 17, wherein the modem and the antenna are further configured to transmit a third reverse channel including control information, wherein the third reverse channel has a different transmission power level than the first reverse channel. 21. The CDMA subscriber unit of claim 17, wherein the modem and the antenna are further configured to transmit a third reverse channel including traffic data, wherein the third reverse channel has a different transmission power level than the first reverse channel. 22. The CDMA subscriber unit of claim 17, wherein the modem and the antenna are further configured to transmit a third reverse channel including control information and a fourth reverse channel including traffic data, wherein at least one of the third or fourth reverse channels has a different transmission power level than the first reverse channel. 23. The CDMA subscriber unit of claim 22, wherein a data rate of the first reverse channel and the fourth reverse channel are different. 24. The CDMA subscriber unit of claim 17, wherein a gain of the second reverse channel is different from a gain of the first reverse channel.
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