Single-source automatic power control method and apparatus for frequency-diverse variable-gain stages of a CDMA cellular handset
US6341219B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 5, 1999 |
| Grant date | Jan 22, 2002 |
| Priority date | — |
| Expiry date | Feb 5, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W52/36
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An automatic and adjustable power control method and apparatus for optimally controlling the output power of a CDMA handset is provided. The method and apparatus utilize a single control signal to automatically control the gain of two frequency diverse variable gain stages of a transmitting portion of the handset by a multi-point hand-off technique. The multi-point hand-off technique partially varies the gain of a first stage to satisfy key system constraints and hands-off control to a second stage. The gain of the second stage is varied to satisfy additional system constraints. A second hand-off is performed so that the gain of the first stage may be varied again to maintain the optimal power control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.