Patent · US Expired

Differential phase shift keying method for the transmission of data

US4799238A · kind A · utility

1Cited by

5References

6Claims

0Family size

Assignee

BBC Brown, Boveri & Company Ltd. · CH

Inventors

Walter Braun · Schorndorf, DE
Walter Hagmann · Suhr, CH

Key dates

Filing date	Jul 15, 1987
Grant date	Jan 17, 1989
Priority date	—
Expiry date	Jul 15, 2007

Classification

Technology area (CPC H)Electricity
CPC primaryH04B2203/5425
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

A PSK data transmission method wherein in the presence of disturbances which are harmonics of a common fundamental frequency, the disturbance signals are eliminated by the fact that the symbol duration (T) of the data symbols, to be transmitted, of a baseband signal (B(t)) is selected in such a manner that the period duration of the disturbance signal (S(t)) is an integral multiple N.T of the symbol duration. By forming the difference between symbols separated by N intervals from each other at the receiver side, the disturbance signal (S(t)) is completely suppressed while the data rate can be arbitrarily determined via the choice of N.

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