System and method for efficient timing estimation and tracking in an orthogonal frequency division multiplexing (OFDM) communication system
US11140014B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 25, 2020 |
| Grant date | Oct 5, 2021 |
| Priority date | — |
| Expiry date | Nov 25, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2663
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In one aspect, an apparatus includes: a buffer to store orthogonal frequency division multiplexing (OFDM) samples of one or more OFDM symbols; a fast Fourier transform (FFT) engine coupled to the buffer, the FFT engine to receive the one or more OFDM samples from the buffer and convert each of the one or more OFDM samples into a plurality of frequency domain sub-carriers; and a timing control circuit coupled to the buffer. The timing control circuit may control timing based at least in part on a difference between a first correlation sum for a first portion of a cyclic prefix of a first one of the one or more OFDM symbols and a second correlation sum for a second portion of the cyclic prefix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.