EP 0737394 A1 19961016 - A QAM CONSTELLATION WHICH IS ROBUST IN THE PRESENCE OF PHASE NOISE; ENCODER AND DECODER FOR THIS CONSTELLATION
Title (en)
A QAM CONSTELLATION WHICH IS ROBUST IN THE PRESENCE OF PHASE NOISE; ENCODER AND DECODER FOR THIS CONSTELLATION
Title (de)
BEI PHASENRAUSCHEN ROBUSTE QAM-KONSTELLATION SOWIE KODIERER UND DEKODIERER DAFÜR
Title (fr)
CONSTELLATION A MODULATION D'AMPLITUDE EN QUADRATURE, FAISANT PREUVE DE COHERENCE EN PRESENCE D'UN BRUIT DE PHASE; CODEUR ET DECODEUR POUR CETTE CONSTELLATION
Publication
Application
Priority
- IB 9500893 W 19951020
- US 32706594 A 19941021
Abstract (en)
[origin: WO9613111A1] A circularly symmetric QAM constellation reduces phase noise. Points of the constellation are situated on concentric circles. The constellation may be encoded and decoded either coherently or noncoherently. A differential encoder for the constellation does not operate by straight subtraction. A differential decoder for the constellation can use an estimated metric to recover the original signal.
IPC 1-7
IPC 8 full level
H04L 27/34 (2006.01)
CPC (source: EP)
H04L 27/3405 (2013.01)
Citation (search report)
See references of WO 9613111A1
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 9613111 A1 19960502; CN 1140521 A 19970115; EP 0737394 A1 19961016; JP H09507374 A 19970722
DOCDB simple family (application)
IB 9500893 W 19951020; CN 95191591 A 19951020; EP 95933569 A 19951020; JP 51375896 A 19951020