Blind equalization method for a high definition television signal
US7194026B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2002 |
| Grant date | Mar 20, 2007 |
| Priority date | — |
| Expiry date | Oct 31, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/211
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An adaptive equalizer updates its tap coefficients with the aid of an error signal e(k)=sign[z(k)]*(RS−|z(k)|2) where sign[ ] is the sign function, z(k) is the equalizer output at symbol time k, | | is the magnitude function and RS is a positive real constant, which is optimally defined as RS=E{|an|3}/E{|an|}, where E{ } is the mathematical expectation function and an is the information symbol at symbol time n. A generalized equalizer error signal satisfies e(k)=sign[z(k)]*(RSp−|z(k)|p) where RSp is a positive real constant, which is optimally defined as RSp=E{|an|p+1}/E {|an|} and p is a positive integer. The equalizer conducts blind equalization of an Advanced Television Systems Committee-High Definition Television signal and any other one-dimensional modulation system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.