Spread spectrum adaptive power control system and method
US5574747A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 4, 1995 |
| Grant date | Nov 12, 1996 |
| Priority date | — |
| Expiry date | Jan 4, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W52/54
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system and method for adaptive power control of a spread spectrum transmitter of a mobile unit operating in a cellular-communications network having a plurality of mobile units in communication with a base station. In response to a received signal from the mobile unit, the received signal having a first spread-spectrum signal and an interfering signal, an automatic gain control (AGC) circuit within the base station generates an AGC-output signal which is despread by base despreader and then processed as a received-power level. The received power level is then compared to a threshold level to generate a power command signal. The power command signal is transmitted to the mobile station as a second spread-spectrum signal. The mobile station despreader despreads the second spread-spectrum signal as a power adjust signal and, responsive to the power adjust signal, increases or decreases the power level of the first spread spectrum signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.