Adaptive noise-predictive partial-response equalization for channels with spectral nulls
US5784415A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 1995 |
| Grant date | Jul 21, 1998 |
| Priority date | — |
| Expiry date | Jul 20, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03496
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present application makes use of a novel adaptive noise-predictive partial-response equalization scheme for channels (30) exhibiting spectral nulls and/or near nulls. The noise-predictive partial-response (PR) equalizer employed in the different embodiments of the present invention consists of a linear PR equalizer (32) which shapes the channel response to a predetermined partial-response function, followed by a linear predictor. This scheme modifies the output sequence of said linear partial-response equalizer (32) by whitening the total distortion, i.e. by whitening the noise components and the residual interference components at said linear PR equalizer output, thereby achieving the best possible signal-to-noise ratio (SNR) before detection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.