Decoupled equalizer in a communications receiver
US9240911B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 2014 |
| Grant date | Jan 19, 2016 |
| Priority date | — |
| Expiry date | May 2, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03114
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A digital communications receiver can comprise a digital filter that can be configured and later reconfigured multiple times as, for example, a matched filter, an equalizer, a matched filter and equalizer, or the like. For example, the digital filter can be initially configured as a matched filter for use with a correlation module to detect pilot symbols. Detected pilot symbols can be utilized to estimate characteristics of a channel from the distant transmitter to the receiver, and the estimated channel characteristics can be used to determine coefficients for an equalizer for reducing channel distortion in future transmissions received over the channel. The digital filter can then be configured as an equalizer or a matched filter and equalizer. If the later, the digital filter can both equalize incoming transmissions from the distant transmitter and, with a correlation module, identify any pilot symbols in the transmissions. Any detected pilot symbols can be utilized to determine again equalizer coefficients for equalizing transmissions received over the channel, and the digital filter can be updated accordingly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.