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1. (WO2018162686) CODING AND MODULATION APPARATUS USING NON-UNIFORM CONSTELLATION

Pub. No.:    WO/2018/162686    International Application No.:    PCT/EP2018/055844
Publication Date: Fri Sep 14 01:59:59 CEST 2018 International Filing Date: Fri Mar 09 00:59:59 CET 2018
IPC: H04L 1/00
Applicants: SONY CORPORATION
SONY EUROPE LIMITED
Inventors: HANDTE, Thomas
CIOCHINA, Dana
LOGHIN, Nabil Sven
Title: CODING AND MODULATION APPARATUS USING NON-UNIFORM CONSTELLATION
Abstract:
A coding and modulation apparatus and method are presented, particularly for use in a system according to IEEE 802.11. The apparatus comprises an encoder configured to encode input data into cell words according to an LDPC code and a modulator configured to modulate said cell words into constellation values of a non-uniform constellation and to assign bit combinations to constellation values of the used non-uniform constellation. The modulator is configured to use a non-uniform constellation and bit labeling from one of the several groups of constellations, which constellation show quadrant and octant symmetry.