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1. WO2022025672 - HYBRID SELF-INTERFERENCE CANCELATION IN FREQUENCY DIVISION DUPLEXING SYSTEM

Publication Number WO/2022/025672
Publication Date 03.02.2022
International Application No. PCT/KR2021/009896
International Filing Date 29.07.2021
IPC
H04B 1/525
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
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 1/04 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
02Transmitters
04Circuits
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
CPC
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
Applicants
  • SAMSUNG ELECTRONICS CO., LTD. [KR]/[KR]
Inventors
  • YUAN, Jin
  • MUHAMMAD, Khurram
  • XU, Xinguang
Agents
  • YOON & LEE INTERNATIONAL PATENT & LAW FIRM
Priority Data
17/383,29522.07.2021US
63/059,09430.07.2020US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) HYBRID SELF-INTERFERENCE CANCELATION IN FREQUENCY DIVISION DUPLEXING SYSTEM
(FR) ANNULATION D'AUTOBROUILLAGE HYBRIDE DANS UN SYSTÈME DE DUPLEXAGE PAR RÉPARTITION EN FRÉQUENCE
Abstract
(EN) A communication device includes an antenna configured to receive a signal in a receive band and transmit a signal in a transmit band through a duplexer, analog transmitter-side radio frequency (RF) self-interference cancelation (SIC) circuitry configured to reduce power of the transmit signal in the receive band before input to the antenna, analog receiver-side RF SIC circuitry configured to reduce power of the receive signal in the transmit band before input to a first analog-to-digital converter (ADC) to convert the receive signal from analog to digital, a coupler configured to couple a small part of the transmit signal to a second ADC to convert the transmit signal from analog to digital, and digital SIC circuitry configured to process the digital sample to generate and apply an SIC signal to the digital receive signal to cancel interference induced in the receive signal by the transmit signal.
(FR) Dispositif de communication comprenant une antenne configurée pour recevoir un signal dans une bande de réception et transmettre un signal dans une bande de transmission à travers un duplexeur, des circuits d'annulation d'autobrouillage (SIC) à radiofréquence (RF) côté émetteur analogique configurés pour réduire la puissance du signal d'émission dans la bande de réception avant l'entrée dans l'antenne, des circuits SIC RF côté récepteur analogique configurés pour réduire la puissance du signal de réception dans la bande de transmission avant l'entrée dans un premier convertisseur analogique-numérique (CAN) pour convertir le signal de réception de l'analogique en numérique, un coupleur configuré pour coupler une petite partie du signal d'émission à un second CAN pour convertir le signal d'émission de l'analogique en numérique, et des circuits SIC numérique configurés pour traiter l'échantillon numérique pour générer et appliquer un signal SIC au signal de réception numérique pour annuler l'interférence induite dans le signal de réception par le signal d'émission.
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