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1. WO2016153404 - PREPARING TRANSMISSION SIGNALS FOR TRANSMISSION

Publication Number WO/2016/153404
Publication Date 29.09.2016
International Application No. PCT/SE2015/050359
International Filing Date 25.03.2015
IPC
H04B 7/04 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
H01Q 1/52 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
1Details of, or arrangements associated with, antennas
52Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
H01Q 21/28 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
21Antenna arrays or systems
28Combinations of substantially independent non-interacting antenna units or systems
H03F 1/32 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
1Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
32Modifications of amplifiers to reduce non-linear distortion
H04B 1/04 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
02Transmitters
04Circuits
H04B 7/06 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
06at the transmitting station
CPC
H01Q 1/523
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
1Details of, or arrangements associated with, antennas
52Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
521reducing the coupling between adjacent antennas
523between antennas of an array
H01Q 21/30
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
21Antenna arrays or systems
30Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
H03F 1/3247
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
1Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
32Modifications of amplifiers to reduce non-linear distortion
3241using predistortion circuits
3247using feedback acting on predistortion circuits
H03F 1/3276
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
1Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
32Modifications of amplifiers to reduce non-linear distortion
3241using predistortion circuits
3276using the nonlinearity inherent to components, e.g. a diode
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
Applicants
  • TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) [SE]/[SE]
Inventors
  • NAMMI, Sairamesh
  • CHAPMAN, Thomas
  • ELFSTRÖM, Torbjörn
  • GÖRANSSON, Bo
Agents
  • KRANSELL & WENNBORG KB
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PREPARING TRANSMISSION SIGNALS FOR TRANSMISSION
(FR) PRÉPARATION DE SIGNAUX D’ÉMISSION POUR UNE ÉMISSION
Abstract
(EN)
It is presented a method for determining how to prepare transmission signals for transmission. The method is performed in a transmitter device and comprises the steps of: obtaining an indicator of mutual correlation between signals transmitted from different transmission antennas of the transmitter device; when the indicator indicates mutual correlation less than a threshold value, selecting a first transmission signal operation scheme; and when the indicator indicates a mutual correlation greater than the threshold value, selecting a second transmission signal operation scheme.
(FR)
La présente invention concerne un procédé permettant de déterminer la façon de préparer des signaux d’émission pour une émission. Le procédé est réalisé dans un dispositif d’émetteur et comprend les étapes consistant : à obtenir un indicateur d’une corrélation mutuelle entre des signaux émis à partir de différentes antennes d’émission du dispositif d’émetteur ; lorsque l’indicateur indique une corrélation mutuelle inférieure à une valeur de seuil, à sélectionner une première technique d’utilisation de signal d’émission ; et lorsque l’indicateur indique une corrélation mutuelle supérieure à la valeur de seuil, à sélectionner une seconde technique d’utilisation de signal d’émission.
Also published as
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