Patent · US Expired

Method and apparatus for detecting CPM-modulated information symbols

US6608873B1 · kind B1 · utility

12Cited by

3References

14Claims

0Family size

Assignee

Siemens Mobile Communications S.p.A. · IT

Inventors

Bernhard Spinnler · Munich, DE
Berthold Lankl · Egmating, DE
Johannes Huber · Brixlegg, AT

Key dates

Filing date	Feb 25, 1999
Grant date	Aug 19, 2003
Priority date	—
Expiry date	Feb 25, 2019

Classification

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

Abstract

Demodulation of CPM-modulated information symbols which are demodulated after being transmitted through an AWGN channel, using only partial whitened matched filtering, whereby finite pulses are produced which, however, are still accompanied by interferences in the form of remaining colored noise which can be approximately converted into white noise by a successive additional whitening filter so that the noise power will be minimized. For correcting the accompanying symbol interferences, a sequence estimation with reduced number of states follows.

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