Patent · US Expired

Demodulation method and demodulator for CPFSK-modulated signals

US6993097B2 · kind B2 · utility

2Cited by

3References

13Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Markus Hammes · Dinslaken, DE
Michael Speth · Krefeld, DE
Andre Neubauer · Krefeld, DE
Michael Madden · Mountain View, US

Key dates

Filing date	Aug 8, 2001
Grant date	Jan 31, 2006
Priority date	—
Expiry date	Aug 20, 2023

Classification

Technology area (CPC H)Electricity
CPC primaryH04L25/03337
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

In a method for estimating a sequence of input data symbols of a CPFSK-modulated data signal transmitted via a faulty channel, in the course of an ACS operation for calculating a transition metric value, an estimated value is determined for the replacement symbol occurring during the linear approximation of the CPFSK. That estimated value is considered in calculating the transition metric value.

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