Amplification control scheme for a receiver
US6771720B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2001 |
| Grant date | Aug 3, 2004 |
| Priority date | — |
| Expiry date | Apr 12, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0095
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system is provided for controlling amplification in a receiver. The receiver amplifies a signal in accordance with a controlled gain to enhance the reliability of demodulating the received signal. A lower frequency signal is derived by down-converting the received signal. The derived lower frequency signal is converted into a digital baseband signal. A compensatory direct current offset is determined by evaluation of one of trailing symbols and a defined sequence of a data packet of the received signal. A compensatory direct current offset is manipulated with respect to a digital baseband signal to compensate for an unwanted direct current offset of the digital baseband signal, indicative of a frequency difference between the received signal and the transmitted signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.