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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0145246 (1993-10-28) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 310 인용 특허 : 0 |
A cellular communications system is provided having both surface and satellite nodes which are fully integrated for providing service over large areas. A spread spectrum system is used with code division multiple access (CDMA) employing forward error correction coding (FECC) to enhance the effective
A cellular communications system is provided having both surface and satellite nodes which are fully integrated for providing service over large areas. A spread spectrum system is used with code division multiple access (CDMA) employing forward error correction coding (FECC) to enhance the effective gain and selectivity of the system. Two-way adaptive power control and signal quality monitoring and power control responsive thereto are provided for controlling the power output levels of transmitters to the minimum necessary for satisfactory communications. Each transmission includes a code representative of the transmitter output power level. Receivers compare this code to the received signal strength and adjust their associated transmitter power output level accordingly. Bit error rate and SNR are monitored by receivers to develop a measure of signal quality. A signal quality code is transmitted to remote units and transmission output power level is adjusted in response. Timing signals are provided by one or more nodes to obtain user position information.
A cellular communication system comprising: (a) a first transceiver comprising a first receiver for receiving a first signal, quality measurement means for determining the quality of said first signal and for generating a first quality signal representative of the quality of said first signal, and a
A cellular communication system comprising: (a) a first transceiver comprising a first receiver for receiving a first signal, quality measurement means for determining the quality of said first signal and for generating a first quality signal representative of the quality of said first signal, and a first transmitter for transmitting a second signal and said first quality signal; (b) a second transceiver comprising a second transmitter for transmitting said first signal, a second receiver for receiving said second signal and said first quality signal, a history compilation means for compiling history data relating to received first quality signals, signal strength measurement means for measuring the signal strength of said second signal, a processor means for processing said first quality signal, said compiled history data and said signal strength of said second signal for providing a path loss signal, and controller means for controlling the output power level of said first signal in accordance with said path loss signal.
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