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1. US20130148711 - Soft linear and non-linear interference cancellation

Lien permanent
Office
États-Unis d'Amérique
Numéro de la demande 13493203
Date de la demande 11.06.2012
Numéro de publication 20130148711
Date de publication 13.06.2013
Numéro de délivrance 08774261
Date de délivrance 08.07.2014
Type de publication B2
CIB
H03H 7/30
HÉLECTRICITÉ
03CIRCUITS ÉLECTRONIQUES FONDAMENTAUX
HRÉSEAUX D'IMPÉDANCES, p.ex. CIRCUITS RÉSONNANTS; RÉSONATEURS
7Réseaux à plusieurs accès comportant comme composants uniquement des éléments électriques passifs
30Réseaux retardateurs
CPC
H04L 27/01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
01Equalisers
H04L 25/0202
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
25Baseband systems
02Details
0202Channel estimation
H04L 25/03012
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
25Baseband systems
02Details
03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
03006Arrangements for removing intersymbol interference
03012operating in the time domain
Déposants Abrishamkar Farrokh
QUALCOMM Incorporated
Sikri Divaydeep
Delgado Ken
Inventeurs Abrishamkar Farrokh
Sikri Divaydeep
Delgado Ken
Mandataires Kordich Donald C.
Titre
(EN) Soft linear and non-linear interference cancellation
front page image
Abrégé
(EN)

A two stage interference cancellation (IC) process includes a linear IC stage that suppresses co-channel interference (CCI) and adjacent channel interference (ACI). The linear IC stage disambiguates otherwise super-trellis data for non-linear cancellation. Soft linear IC processing is driven by a-posteriori probability (Apop) information. A second stage performs expectation maximization/Baum Welch (EM-BW) processing that reduces residual ISI left over from the first stage and also generates the Apop which drives the soft linear IC in an iterative manner.
Documents de brevet associés
WO/2013/059353
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