Method and device for transmitting information over a communication channel with variable impedance
US9705533B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 8, 2015 |
| Grant date | Jul 11, 2017 |
| Priority date | — |
| Expiry date | Jan 4, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2203/5425
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method includes digital/analog conversion of a digital signal modulated by information to provide a modulated initial analog signal having a crest factor greater than one, and amplification of the initial analog signal to provide an amplified modulated signal. A modulated channel analog signal derived from the modulated amplified analog signal is transmitted over a communications channel, with impedance of the communications channel varying during the transmission. The method further includes at least one determination during the transmission of a peak-clipping rate of the amplified analog signal over at least one time interval, and an adjustment of a level of the initial analog signal as a function of the determined peak-clipping rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.