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1. WO2020112239 - MULTIPHASE TRANSMITTER DIGITAL FRONT END

Publication Number WO/2020/112239
Publication Date 04.06.2020
International Application No. PCT/US2019/054175
International Filing Date 02.10.2019
IPC
H04B 1/00 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
H03B 27/00 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
BGENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
27Generation of oscillations providing a plurality of outputs of the same frequency but differing in phase, other than merely two anti-phase outputs
CPC
H04B 1/0475
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
02Transmitters
04Circuits
0475with means for limiting noise, interference or distortion
H04B 17/354
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
17Monitoring; Testing
30of propagation channels
309Measuring or estimating channel quality parameters
354Adjacent channel leakage power
H04L 27/2695
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
2655Synchronisation arrangements
2689Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation
2695with channel estimation, e.g. determination of delay spread, derivative or peak tracking
H04L 27/364
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
32Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
34Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
36Modulator circuits; Transmitter circuits
362Modulation using more than one carrier, e.g. with quadrature carriers, separately amplitude modulated
364Arrangements for overcoming imperfections in the modulator, e.g. quadrature error or unbalanced I and Q levels
Applicants
  • INTEL CORPORATION [US]/[US]
Inventors
  • HAMIDOVIC, Damir
  • BUCKEL, Tobias
  • KLINKAN, Alexander
  • KUTTNER, Franz
  • MARKOVIC, Jovan
  • PREYLER, Peter
Agents
  • BRUTMAN, Laura C.
Priority Data
16/200,12626.11.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MULTIPHASE TRANSMITTER DIGITAL FRONT END
(FR) FRONTAL NUMÉRIQUE D'ÉMETTEUR MULTIPHASE
Abstract
(EN)
Techniques are disclosed to provide a data dependent delay for a multi-phase transmitter architectures. These techniques include identifying a current segment occupied by a symbol associated with in-phase (I) and quadrature phase (Q) data within a data constellation based upon the number of phases used. Once the segment is identified, vector components are calculated as a function of the segment used to re-map the symbol within the constellation defined in accordance with the number of phases. The data delay may be performed in the baseband or at the RF rate to time-align local oscillator clocks with the delayed data, which is represented as the calculated vector components, for transmission. Further modifications to the RF-DAC operation to facilitate operation with the multi-phase system are also disclosed.
(FR)
L'invention concerne des techniques pour fournir un retard dépendant de données destiné à une architecture d'émetteur multiphase. Ces techniques consistent à identifier un segment actuel occupé par un symbole associé à des données en phase (I) et en quadrature (Q) dans une constellation de données sur la base du nombre de phases utilisées. Une fois que le segment est identifié, des composantes vectorielles sont calculées en fonction du segment utilisé pour recartographier le symbole dans la constellation définie en fonction du nombre de phases. Le retard de données peut être effectué dans la bande de base ou au taux RF pour aligner temporellement des horloges d'oscillateur local avec les données retardées, qui sont représentées en tant que composantes de vecteur calculées, destinées à une transmission. L'invention concerne également d'autres modifications apportées à l'opération RF-DAC pour faciliter le fonctionnement au moyen du système multiphase.
Also published as
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