System and method for detecting of channel conditions and channel estimation in an orthogonal frequency division multiplexing (OFDM) receiver
US12244438B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 28, 2023 |
| Grant date | Mar 4, 2025 |
| Priority date | — |
| Expiry date | Jun 3, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2649
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In one aspect, an apparatus includes: a front end circuit to receive and process incoming radio frequency (RF) signals into orthogonal frequency division multiplexing (OFDM) samples; a fast Fourier transform (FFT) engine to receive and convert the OFDM samples into frequency domain sub-carriers; a demodulator to demodulate the frequency domain sub-carriers; a channel estimator to: compute a first pilot channel estimate for a first channel condition comprising a flat channel condition and a second pilot channel estimate for a second channel condition comprising a selective channel condition based on a first set of pilot sub-carriers of the frequency domain sub-carriers; and select one of the first and second pilot channel estimates using the first and second pilot channel estimate; and a control circuit to configure at least the demodulator based at least in part on the selected first or second pilot channel estimate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.