Pre-equalizer structure based on PN511 sequence for terrestrial DTV reception
US7010269B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 7, 2001 |
| Grant date | Mar 7, 2006 |
| Priority date | — |
| Expiry date | Nov 22, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/0377
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A free-running sample rate converter and a large spanning, non-linear pre-equalizer are employed before a timing recovery loop within a wireless receiver chain, while forward and feedback equalization after the timing recovery loop (at and around the input of a sync detector) is also retained. A channel identifier produces a channel estimate from the PN511 training sequence within the received wireless signals, with the pre-equalizer employing the resulting channel estimate to equalize the received signals being passed to the timing recovery loop, improving the signal quality for carrier and timing recovery and decoding to increase the probability of successful decoding while enabling the use of fast tracking forward and feedback equalizers for decoding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.