Patent · US Expired

Demodulator and method for demodulating CPFSK-modulated signals using a linear approximation of the CPFSK signal

US6785348B2 · kind B2 · utility

1Cited by

3References

10Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

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

Key dates

Filing date	Dec 23, 2002
Grant date	Aug 31, 2004
Priority date	—
Expiry date	Dec 23, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2025/03407
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

In a method for demodulating a CPFSK-modulated signal, the n−1-th substitute symbol an−1 which occurs in the linear approximation of the CPFSK is estimated in order to determine an n-th input data symbol dn on which the CPFSK modulation is based. The n−1-th substitute symbol an−1 is in this case estimated on the basis of the previously determined n−1-th input data symbol {circumflex over (d)}n−1.

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