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1. (WO2019045867) METHOD AND APPARATUS WITH COMMON DIGITAL PRE-DISTORTION COMPONENT FOR MULTIPLE TRANSMIT CHAINS
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Pub. No.: WO/2019/045867 International Application No.: PCT/US2018/040032
Publication Date: 07.03.2019 International Filing Date: 28.06.2018
IPC:
H03F 1/02 (2006.01) ,H03F 1/32 (2006.01) ,H03F 3/195 (2006.01) ,H03F 3/213 (2006.01) ,H04B 1/04 (2006.01) ,H04L 27/36 (2006.01)
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
F
AMPLIFIERS
1
Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
02
Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
F
AMPLIFIERS
1
Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
32
Modifications of amplifiers to reduce non-linear distortion
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
F
AMPLIFIERS
3
Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
189
High-frequency amplifiers, e.g. radio frequency amplifiers
19
with semiconductor devices only
195
in integrated circuits
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
F
AMPLIFIERS
3
Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
20
Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
21
with semiconductor devices only
213
in integrated circuits
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
B
TRANSMISSION
1
Details 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
02
Transmitters
04
Circuits
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27
Modulated-carrier systems
32
Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18, or H04L27/26213
34
Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
36
Modulator circuits; Transmitter circuits
Applicants:
QUALCOMM INCORPORATED [US/US]; ATTN: International IP Administration 5775 Morehouse Drive San Diego, California 92121-1714, US
Inventors:
SAGI, Ariel; US
GUTMAN, Igor; US
EITAN, Alecsander; US
Agent:
FOUNTAIN, George; US
Priority Data:
15/688,73428.08.2017US
Title (EN) METHOD AND APPARATUS WITH COMMON DIGITAL PRE-DISTORTION COMPONENT FOR MULTIPLE TRANSMIT CHAINS
(FR) PROCÉDÉ ET APPAREIL AYANT UNE COMPOSANTE DE PRÉ-DISTORSION NUMÉRIQUE COMMUNE POUR DE MULTIPLES CHAÎNES DE TRANSMISSION
Abstract:
(EN) Certain aspects of the present disclosure are directed to digital predistortion (DPD) for use with a multi-chain wireless transmitter. In various examples described herein, the multi-chain transmitter is configured to use a single common DPD device or module for all transmit chains and to adjust the bias voltages of the power amplifiers of the separate transmit chains to operate at substantially the same backoff so the distortion to the corresponding output signals is similar. Since the distortion of the output of the different chains is similar, a single common predistortion may be applied using the single DPD device to a signal to be transmitted. Techniques are also described for calibrating the predistortion coefficients of the DPD to optimize (or otherwise set) the amount of distortion reduction to be achieved. The predistortion coefficients for the single DPD may be set or calibrated based on a particular directionality needed for beamforming.
(FR) Certains aspects de la présente invention concernent une prédistorsion numérique (DPD) destinée à être utilisée avec un émetteur sans fil à chaînes multiples. Dans divers exemples décrits ici, l'émetteur à chaînes multiples est configuré pour utiliser un seul dispositif ou module DPD commun pour toutes les chaînes de transmission et pour ajuster les tensions de polarisation des amplificateurs de puissance des chaînes de transmission séparées pour fonctionner sensiblement dans la même réduction de puissance de sorte que la distorsion subie par les signaux de sortie correspondants est similaire. Comme la distorsion de la sortie des différentes chaînes est similaire, une seule prédistorsion commune peut être appliquée à l'aide du dispositif DPD unique à un signal à transmettre. L'invention concerne également des techniques d'étalonnage des coefficients de prédistorsion du DPD pour optimiser (ou sinon fixer) la quantité de réduction de distorsion à atteindre. Les coefficients de prédistorsion pour le DPD unique peuvent être fixés ou étalonnés sur la base d'une directionnalité particulière nécessaire pour la formation de faisceau.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)