Effiziente Decodierung von Überlagerungsmodulation

Details

Veröffentlichungs-Nr.

EP3481019

Aktenzeichen

EP17199940

Anmeldetag

3. November 2017

Veröffentlichung

16. September 2020

Erteilung

16. September 2020

Rechtsraum

EP

IPC

H04L25/06H04B1/7107H04L1/00

Abstract

The present invention provides a novel technique (Quick-SIC) for detecting information bits in a superposition of two or more modulated signals. According to a first aspect of the invention, log-likelihood ratios for codebits of a first modulated signal are computed and used as a priori information for demapping codebits of the second modulated signal. The codebits of the second modulated signal can thus be decoded without having to re-code and re-modulate the codebits of the first modulated signal. According to a second aspect, a hybrid demodulation technique is provided that estimates the mutual information between codebits and log-likelihood ratios, and selectively applies either conventional SIC or Quick-SIC, depending on whether or not the mutual information exceeds a certain threshold value.

Anmelder

Firma

Panasonic Intellectual Property Corporation of America

Land

🇺🇸 USA

Fachgebiete