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1. (WO2017198288) APPARATUS AND METHOD FOR IDENTIFICATION AND COMPENSATION OF DISTORTION IN A MULTI-ANTENNA SYSTEM
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2017/198288 International Application No.: PCT/EP2016/061001
Publication Date: 23.11.2017 International Filing Date: 17.05.2016
IPC:
H04B 1/04 (2006.01) ,H04L 27/36 (2006.01) ,H04B 7/06 (2006.01)
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
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
B
TRANSMISSION
7
Radio transmission systems, i.e. using radiation field
02
Diversity systems
04
using a plurality of spaced independent aerials
06
at transmitting station
Applicants:
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) [SE/SE]; 164 83 Stockholm, SE
Inventors:
HAUSMAIR, Katharina; SE
ERIKSSON, Thomas; SE
GUSTAVSSON, Ulf; SE
FAGER, Christian; SE
Agent:
ERICSSON; Patent Development Torshamnsgatan 21-23 164 80 Stockholm, SE
Priority Data:
Title (EN) APPARATUS AND METHOD FOR IDENTIFICATION AND COMPENSATION OF DISTORTION IN A MULTI-ANTENNA SYSTEM
(FR) APPAREIL ET PROCÉDÉ D'IDENTIFICATION ET DE COMPENSATION DE LA DISTORSION DANS UN SYSTÈME À ANTENNES MULTIPLES
Abstract:
(EN) 40 ABSTRACT The disclosure relates to devices, methods, and computer programs in mobile communications in order to reduce signal distortions. Specifically, it relates to a transmitter system which comprises a plurality of signal paths. Each signal path is associated with an input transmission signal. Each signal path comprises an analogue portion of the signal path. Each 5 signal path comprises a Dual-Input Digital Predistortion, DI DPD, module. The DI DPD is configured to provide a predistorted input transmission signal to the analogue portion in response to a received Crosstalk and Mismatch, CTM, signal and the input transmission signal. The transmitter system further comprises one or more CTM modules configured to receive one or more input transmission signals. The CTM module comprises to separately generate for 10 each DI DPD module the CTM signal, where said CTM signals represent CTM distortions caused by one or more output transmission signals of each said analogue portion.
(FR) L'invention concerne des dispositifs, des procédés et des programmes informatiques dans des communications mobiles visant à réduire les distorsions du signal. Plus précisément, l'invention concerne un système émetteur qui comprend une pluralité de trajets de signaux. Chaque trajet de signal est associé à un signal de transmission d'entrée. Chaque trajet de signal comprend une portion analogique du trajet de signal. Chaque trajet de signal comprend un module de prédistorsion numérique à double entrée, DPD DI. Le DPD DI est configuré pour délivrer un signal de transmission d'entrée avec prédistorsion à la portion analogique en réponse un signal reçu de diaphonie et désadaptation, CTM, et au signal de transmission d'entrée. Le système émetteur comprend en outre un ou plusieurs modules CTM configurés pour recevoir un ou plusieurs signaux de transmission d'entrée. Le module CTM comprend la génération séparée du signal CTM pour chaque module de DPD DI, lesdits signaux CTM représentant des distorsions CTM provoquées par un ou plusieurs signaux de transmission de sortie de chaque portion analogique.
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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, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, 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)