Emission control for receiver operating over UTP cables in automotive environment
US10644906B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 2018 |
| Grant date | May 5, 2020 |
| Priority date | — |
| Expiry date | Aug 4, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03592
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A transceiver system includes a transmitter circuit having a line driver with a programmable signal level to generate a transmit signal for transmission in an automotive environment over an unshielded-twisted pair (UTP) cable. The transceiver system further includes a physical layer (PHY) receiver. The PHY receiver includes a high-pass filter (HPF), an adaptive feed-forward equalizer (FFE) block and a noise aware adaptation block. The HPF rejects transient noise of a received signal, and the FFE block receives a digital signal and adaptively filters out narrowband continuous wave (CW) noise using an adaptation signal. The digital signal is based on the received signal, and the noise aware adaptation block receives an error signal and generates the adaptation signal. The error signal is generated based on an equalized signal of the FFE block and an estimated signal. The combined transmit and receive circuitry allow lowering emission while rejecting strong receiver automotive noises.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.