Polarmodulation

Details

Veröffentlichungs-Nr.

EP2627053

Aktenzeichen

EP12154767

Anmeldetag

9. Februar 2012

Veröffentlichung

20. April 2016

Erteilung

20. April 2016

Rechtsraum

EP

IPC

H04L27/36

Abstract

A modulator (100) comprises a polar generation stage (120) arranged for generating an amplitude component and a phase component of a modulation signal, a differentiator stage (150) arranged for generating a differentiated phase component by differentiating the phase component; and an event detection stage (170) arranged for detecting a high bandwidth event by detecting at least one of the amplitude component and the differentiated phase component meeting an event criterion. An inversion stage (130) is arranged for generating a modified amplitude component by inverting the amplitude component in response to detecting the high bandwidth event. A phase offset stage (150) is arranged for generating a modified differentiated phase component by, in response to detecting the high bandwidth event, adding to the differentiated phase component a phase offset having a magnitude of 180 degrees and a sign opposite to a sign of the differentiated phase component. An amplitude modulation stage (300) is arranged for employing the modified amplitude component to modulate the amplitude of a carrier signal, and a phase modulation stage (200) is arranged for employing the modified differentiated phase component to modulate the frequency of the carrier signal.

Anmelder

Firmen

Telefonaktiebolaget LM Ericsson (publ)
Telefonaktiebolaget L M Ericsson (publ)
Ericsson Modems SA
ST-Ericsson SA

Land

🇸🇪 Schweden

Fachgebiete