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1. WO2013138515 - SCALING OF DIGITAL FILTER COEFFICIENTS FOR SPEEDING UP FILTER TRACKING IN A TDD OR MBSFN SYSTEM

Publication Number WO/2013/138515
Publication Date 19.09.2013
International Application No. PCT/US2013/031028
International Filing Date 13.03.2013
IPC
H04L 27/26 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
26Systems using multi-frequency codes
H04L 27/00 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
CPC
H04L 2027/0024
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
0014Carrier regulation
0024at the receiver end
H04L 2027/0053
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
0014Carrier regulation
0044Control loops for carrier regulation
0053Closed loops
H04L 2027/0069
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
0014Carrier regulation
0044Control loops for carrier regulation
0063Elements of loops
0069Loop filters
H04L 27/0014
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
0014Carrier regulation
H04L 27/2657
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
26Systems using multi-frequency codes
2601Multicarrier modulation systems
2647Arrangements specific to the receiver only
2655Synchronisation arrangements
2657Carrier synchronisation
H04L 27/2685
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
26Systems using multi-frequency codes
2601Multicarrier modulation systems
2647Arrangements specific to the receiver only
2655Synchronisation arrangements
2668Details of algorithms
2681characterised by constraints
2685Speed of convergence
Applicants
  • QUALCOMM INCORPORATED [US]/[US]
Inventors
  • CHOI, Jun Won
  • XU, Huilin
  • CHALLA, Raghu Narayan
Agents
  • LENKIN, Alan M.
Priority Data
13/797,90712.03.2013US
61/611,77016.03.2012US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SCALING OF DIGITAL FILTER COEFFICIENTS FOR SPEEDING UP FILTER TRACKING IN A TDD OR MBSFN SYSTEM
(FR) PONDÉRATION DE COEFFICIENTS DE FILTRE NUMÉRIQUE POUR ACCÉLÉRER LE SUIVI DU FILTRE DANS UN SYSTÈME TDD OU MBSFN
Abstract
(EN)
A method for speeding up a filter tracking speed includes scaling filter coefficients based at least in part on an uplink/downlink configuration in a time division duplex (TDD) or a multimedia broadcast single frequency network (MBSFN) system. The method also includes applying scaled filter coefficients during at least one downlink subframe to control a filter tracking speed.
(FR)
L'invention porte sur un procédé qui permet d'augmenter la vitesse de suivi d'un filtre, qui consiste à pondérer des coefficients de filtre sur la base au moins en partie d'une configuration de liaison montante/liaison descendante dans un système à duplexage par répartition temporelle (TDD) ou un système de réseau de diffusion multimédia à fréquence unique (MBSFN). Le procédé consiste également à appliquer des coefficients de filtre pondérés durant au moins une sous-trame de liaison descendante afin de commander la vitesse de suivi du filtre.
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