Patent · US Active

Receiver structure and method for the demodulation of a quadrature-modulated signal

US8199803B2 · kind B2 · utility

98Cited by

2References

21Claims

0Family size

Assignee

Nokia Siemens Networks GmbH & Co. KG · DE

Inventors

Fabian Nikolaus Hauske · Birkenfeld, DE
Berthold Lankl · Egmating, DE
Ernst-Dieter Schmidt · Feldkirchen-Westerham, DE
Changsong Xie · Munich, DE

Key dates

Filing date	Jul 5, 2007
Grant date	Jun 12, 2012
Priority date	—
Expiry date	Apr 6, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2025/03439
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A receiver is provided for a quadrature-modulated signal, which can be divided into an inphase signal and a quadrature signal. The inphase signal is fed to first and third equalizers, and the quadrature signal is fed to second and fourth equalizers, wherein the first and second equalizers each perform a first equalization of the respective signal. An output of the first equalizer is connected to a second input of the fourth equalizer, which, by means of a second equalization of the quadrature signal, transmits an equalized quadrature signal as a function of the previously fed equalized inphase signal of the first equalizer. An output of the second equalizer is connected to the second input of the third equalizer, which, through a second equalization of the inphase signal, transmits an equalized inphase signal as a function of the previously fed equalized quadrature signal of the second equalizer.

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