Precoding for a non-linear codec
US7099403B1 · kind B1 · utility
3Cited by
12References
29Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 21, 2000 |
| Grant date | Aug 29, 2006 |
| Priority date | — |
| Expiry date | Mar 14, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/4975
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A decoding system to achieve rates higher than 33.6 kbps in the analog modem to digital modem direction. The decoding system modifies the standard Tomlinson Harashima Precoding algorithm to adapt it for use in PCM modems. Instead of an arithmetic modulo operation that is implemented in the transmitter, the invention defines a Discrete Modulo Operation that performs the function of limiting the amplitude of the transmitted signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.