ADJUSTING THE AMPLITUDE AND PHASE CHARACTERISTICS OF TRANSMITTER GENERATED WIRELESS COMMUNICATION SIGNALS IN RESPONSE TO BASE STATION TRANSMIT POWER CONTROL SIGNALS AND KNOWN TRANSMITTER AMPLIFIER CHARACTERISTICS
US6907025B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2003 |
| Grant date | Jun 14, 2005 |
| Priority date | — |
| Expiry date | Dec 30, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W52/226
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and system for adjusting the amplitude and phase characteristics of wireless communication signals generated by an analog radio transmitter, based on transmit power control (TPC) signals received by a base station (BS) and known characteristics of a power amplifier (PA) included in the transmitter. A digital pre-distortion compensation module, having real and imaginary signal paths, receives and processes real and imaginary signal components used to generate the wireless communication signal. The phase and amplitude characteristics of the wireless communication signal are controlled in response to the TPC signals, such that impaired amplitude and phase characteristics of the PA are corrected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.