Apparatus and method for controlling power in code division multiple access system
US6151328A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 1998 |
| Grant date | Nov 21, 2000 |
| Priority date | — |
| Expiry date | Dec 31, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W52/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for controlling power in a CDMA system using antenna diversity. The power control apparatus comprises a CDMA base band/IF transmitter for processing an information signal to output K IF signals, K RF modules for converting the K IF signals from the CDMA base band/IF transmitter into K RF signals and transmitting the converted K RF signals through K transmitting antennas, a receiver for receiving a signal from a mobile terminal through a receiving antenna and processing the received signal to output K power control bits and decoded data, and a processor for generating K data channel gains in response to the K power control bits from the receiver and outputting the generated K data channel gains to the CDMA base band/IF transmitter to control transmission powers of the K transmitting antennas. According to the present invention, the transmission power control operation can individually be performed with respect to antennas at the transmitting stage of a base station in consideration of different channel environments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.