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1. WO2019219185 - INTERFERENCE MITIGATION

Publication Number WO/2019/219185
Publication Date 21.11.2019
International Application No. PCT/EP2018/062721
International Filing Date 16.05.2018
IPC
H04B 1/10 2006.1
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
06Receivers
10Means associated with receiver for limiting or suppressing noise or interference
H04B 1/12 2006.1
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
06Receivers
10Means associated with receiver for limiting or suppressing noise or interference
12Neutralising, balancing, or compensation arrangements
H04B 7/08 2006.1
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
08at the receiving station
CPC
H04B 1/04
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
H04B 1/1027
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
10Means associated with receiver for limiting or suppressing noise or interference
1027assessing signal quality or detecting noise/interference for the received signal
H04B 1/123
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
10Means associated with receiver for limiting or suppressing noise or interference
12Neutralising, balancing, or compensation arrangements
123using adaptive balancing or compensation means
H04B 1/525
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
50using different frequencies for the two directions of communication
52Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
525with means for reducing leakage of transmitter signal into the receiver
H04B 1/7097
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
69Spread spectrum techniques
707using direct sequence modulation
7097Interference-related aspects
Applicants
  • TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) [SE]/[SE]
Inventors
  • GUSTAVSSON, Ulf
  • MOLLÉN, Christopher
  • LARSSON, Erik
Agents
  • ERICSSON
Priority Data
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) INTERFERENCE MITIGATION
(FR) ATTÉNUATION D'INTERFÉRENCES
Abstract
(EN) A method is disclosed of a wireless receiver configured for spatial selective reception. The method is for mitigation of an interfering signal leaked into a frequency range of a desired signal due to non-linearity of hardware components of the receiver. The method comprises receiving a composite signal comprising the desired signal and the interfering signal, filtering the composite signal using a spatial filter for a channel response of the desired signal to provide a first intermediate signal component, and filtering the composite signal using a spatial filter for a channel response of the interfering signal to provide a second intermediate signal component. The method also comprises estimating a squared amplitude of the interfering signal based on the second intermediate signal component and a model of the non-linearity, and estimating the desired signal based on the first intermediate signal component, the estimated squared amplitude of the interfering signal, and the model of the non-linearity. Corresponding apparatus, wireless receiver, wireless communication device and computer program product are also disclosed.
(FR) L'invention concerne un procédé d'un récepteur sans fil conçu pour une réception spatialement sélective. Le procédé est destiné à atténuer un signal d'interférence qui a fui dans une plage de fréquences d'un signal souhaité en raison de la non-linéarité de composants matériels du récepteur. Le procédé comprend la réception d'un signal composite comprenant le signal souhaité et le signal d'interférence, le filtrage du signal composite à l'aide d'un filtre spatial pour une réponse de canal du signal souhaité afin de fournir un premier composant de signal intermédiaire, et le filtrage du signal composite à l'aide d'un filtre spatial pour une réponse de canal du signal d'interférence afin de fournir un second composant de signal intermédiaire. Le procédé comprend également l'estimation d'une amplitude au carré du signal d'interférence sur la base du second composant de signal intermédiaire et d'un modèle de la non-linéarité, et l'estimation du signal souhaité sur la base du premier composant de signal intermédiaire, de l'amplitude au carré estimée du signal d'interférence et du modèle de la non-linéarité. L'invention concerne également un appareil, un récepteur sans fil, un dispositif de communication sans fil et un produit programme d'ordinateur correspondants.
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