Processing

Please wait...

Settings

Settings

Goto Application

1. WO2010000603 - SIGNAL PROCESSING DEVICE AND METHOD

Publication Number WO/2010/000603
Publication Date 07.01.2010
International Application No. PCT/EP2009/057358
International Filing Date 15.06.2009
Chapter 2 Demand Filed 26.04.2010
IPC
H04B 1/40 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
38Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
40Circuits
CPC
H04B 1/28
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
06Receivers
16Circuits
26for superheterodyne receivers
28the receiver comprising at least one semiconductor device having three or more electrodes
H04B 1/406
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
38Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
40Circuits
403using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
406with more than one transmission mode, e.g. analog and digital modes
Applicants
  • TELEFONAKTIEBOLAGET LM ERICSSON [SE]/[SE] (AllExceptUS)
  • SUNDSTRÖM, Lars [SE]/[SE] (UsOnly)
  • MATTISSON, Sven [SE]/[SE] (UsOnly)
  • OREDSSON, Filip [SE]/[SE] (UsOnly)
  • PETERSSON, Tony [SE]/[SE] (UsOnly)
  • LINDOFF, Bengt [SE]/[SE] (UsOnly)
  • DIN, Imad, ud [PK]/[SE] (UsOnly)
Inventors
  • SUNDSTRÖM, Lars
  • MATTISSON, Sven
  • OREDSSON, Filip
  • PETERSSON, Tony
  • LINDOFF, Bengt
  • DIN, Imad, ud
Agents
  • BRATT, Hanna
  • ERICSSON AB
Priority Data
08159678.504.07.2008EP
61/079,90311.07.2008US
61/095,43009.09.2008US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SIGNAL PROCESSING DEVICE AND METHOD
(FR) DISPOSITIF ET PROCÉDÉ DE TRAITEMENT DE SIGNAL
Abstract
(EN)
A processing device (40) for processing an analog complex input signal generated by downconversion of an aggregated-spectrum radio-frequency signal in a radio-receiver (10), wherein the complex input signal comprises a plurality of sub bands (S1-S4) scattered across a total frequency band (4) of the complex input signal. The processing device (40) comprises a plurality of processing paths (P1-PN). wherein each processing path (P1-PN) is adapted to process an associated sub band (S1-S4). Each processing path comprises a complex mixer (CM1-CMN) adapted to frequency translate the complex input signal, and an analog channel-selection filter (CSF1-CSFN) arranged to filter an output signal of the complex mixer (CM1-CMN) and pass the frequency translated associated sub band (S1-S4). A control unit (60) is adapted to receive control data indicating frequency locations of the sub bands (S1-S4) and, for each processing path (P1-PN). control the local oscillator signal of the complex mixer (CM1-CMN) of the processing path (P1-PN) based on the frequency location of the associated sub band (S1-S4) and the passband of the channel-selection filter (CSF1-CSFN) of the processing path (P1-PN), such that the frequency-translated associated sub band (S1-S4) appears within a passband of the channel-selection filter (CSF1-CSFN) of the processing path (P1-PN). The distortion monitored in the unused paths may be used to improve the performance of the used paths.
(FR)
L'invention porte sur un dispositif de traitement (40) pour traiter un signal d'entrée complexe analogique généré par abaissement de fréquence d'un signal radiofréquence à spectre agrégé dans un récepteur radio (10), le signal d'entrée complexe comprenant une pluralité de sous-bandes (S1-S4) dispersées dans une bande de fréquence totale (4) du signal d'entrée complexe. Le dispositif de traitement (40) comprend une pluralité de trajets de traitement (P1-PN), chaque trajet de traitement (P1-PN) étant conçu pour traiter une sous-bande associée (S1-S4). Chaque trajet de traitement comprend un mélangeur complexe (CM1-CMN) conçu pour transposer en fréquence le signal d'entrée complexe, et un filtre de sélection de canal analogique (CSF1-CSFN) conçu pour filtrer un signal de sortie du mélangeur complexe (CM1-CMN) et laisser passer la sous-bande associée transposée en fréquence (S1-S4). Une unité de commande (60) est conçue pour recevoir des données de commande indiquant des emplacements de fréquence des sous-bandes (S1-S4) et, pour chaque trajet de traitement (P1-PN), commander le signal d'oscillateur local du mélangeur complexe (CM1-CMN) du trajet du traitement (P1-PN) sur la base de l'emplacement de fréquence de la sous-bande associée (S1-S4) et de la bande passante du filtre de sélection de canal (CSF1-CSFN) du trajet de traitement (P1-PN), de sorte que la sous-bande associée transposée en fréquence (S1-S4) apparaît dans une bande passante du filtre de sélection de canal (CSF1-CSFN) du trajet de traitement (P1-PN). La distorsion surveillée dans les trajets non utilisés peut être utilisée pour améliorer les performances des trajets utilisés.
Latest bibliographic data on file with the International Bureau