Transmitter device and methods for predistortion and decorrelation of noise in such a transmitter device
US12289124B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 15, 2023 |
| Grant date | Apr 29, 2025 |
| Priority date | — |
| Expiry date | Aug 15, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2001/0425
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A multichannel transmitter device includes, on each channel: a transmission processing channel designed to process an input signal and comprising a predistortion block applying a predistortion to the input signal on the basis of predistortion coefficients, a DAC, a first analogue filter, a power amplifier and a sigma-delta encoder between the predistortion block and the digital-to-analogue converter and designed to carry out notably a quantization of the predistortion block; a return channel associated with the transmission processing channel and comprising a block for estimating predistortion coefficients so as to estimate predistortion coefficients on the basis of the input signal and of a feedback signal; the transmitter device wherein the block for estimating predistortion coefficients is designed to estimate the predistortion coefficients on the basis of at least the input signal and of a signal resulting from the subtraction, from the feedback signal, of a signal representing the quantization noise resulting from the quantization carried out by the sigma-delta encoder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.