Patent · US Expired

System for digital information transmission with associated methods and devices

US6442211B1 · kind B1 · utility

34Cited by

8References

30Claims

0Family size

Assignee

iAd Gesellschaft für Informatik, Automatisierung und Datenverarbeitung mbH · DE

Inventors

Herrmann Hampel · Großhabersdorf, DE
Johannes Huber · Brixlegg, AT
Klaus Lehmann · Roßdorf, DE
Thomas Wagner · Kammerstein, DE

Key dates

Filing date	Mar 22, 1999
Grant date	Aug 27, 2002
Priority date	—
Expiry date	Mar 22, 2019

Classification

Technology area (CPC H)Electricity
CPC primaryH04L27/2602
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

The system achieves high bandwidth efficiency and a low bit and message error probability in digital data transmission. The system, with its associated methods and devices, obviates carrier synchronization or clock synchronization. Digital multicarrier transmission with coding and decoding is carried out on the basis of block synchronization, wherein, for carrier modulation, the modulation of the subcarriers is carried out differentially in coded form in the direction of the subcarriers, that is to say in the frequency domain.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.