System and method for detecting of channel conditions and channel estimation in an orthogonal frequency division multiplexing (OFDM) receiver
US11652667B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 25, 2020 |
| Grant date | May 16, 2023 |
| Priority date | — |
| Expiry date | Jan 28, 2041 |
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 process incoming radio frequency (RF) signals into orthogonal frequency division multiplexing (OFDM) samples of a plurality of OFDM symbols; a transform engine coupled to the front end circuit to convert the plurality of OFDM samples into a plurality of frequency domain sub-carriers; a demodulator coupled to the transform engine to demodulate the plurality of frequency domain sub-carriers; a channel estimation circuit coupled to the transform engine to determine a first channel estimate based on a first set of pilot sub-carriers of the plurality of frequency domain sub-carriers and a second channel estimate based on the first set of pilot sub-carriers; and a control circuit coupled to the channel estimation circuit to control a configuration of the demodulator based at least in part on a selected one of the channel estimates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.