System, apparatus and method for cancelling tonal interference in an orthogonal frequency division multiplexing (OFDM) receiver
US11381267B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 15, 2020 |
| Grant date | Jul 5, 2022 |
| Priority date | — |
| Expiry date | Dec 15, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/26524
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In one aspect, an apparatus includes: a fast Fourier transform (FFT) engine to receive orthogonal frequency division multiplexing (OFDM) samples of one or more OFDM symbols and convert the one or more OFDM samples into a plurality of frequency domain carriers; and a tone cancellation circuit coupled to the FFT engine to receive the one or more OFDM samples and generate a plurality of frequency carriers for the one or more OFDM samples, identify a highest magnitude frequency carrier of the plurality of frequency carriers, and remove tone interference from the OFDM samples based at least in part on the highest magnitude frequency carrier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.