OFDM channel estimation
US11477052B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 26, 2019 |
| Grant date | Oct 18, 2022 |
| Priority date | — |
| Expiry date | Jul 19, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/001
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A radio receiver of a radio communication system is configured to tune to a radio channel by generating a periodic signal, mixing the periodic signal with radio signals received from a radio transmission system and passing the mixed signal through a channel filter. The radio receiver receives, from the radio transmission system, an OFDM data signal modulated on a set of OFDM subcarriers within the tuned channel. The channel filter has a passband that is wider than the channel bandwidth of the tuned channel such that the filter passes i) said OFDM data signal, ii) an in-channel reference signal, and iii) an out-of-channel reference signal. The radio receiver comprises channel estimation logic configured to use both reference signals to calculate a channel estimate for an OFDM subcarrier within the tuned channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.