WO2014128163A3 - Interference elimination device and method - Google Patents

Interference elimination device and method Download PDF

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Publication number
WO2014128163A3
WO2014128163A3 PCT/EP2014/053236 EP2014053236W WO2014128163A3 WO 2014128163 A3 WO2014128163 A3 WO 2014128163A3 EP 2014053236 W EP2014053236 W EP 2014053236W WO 2014128163 A3 WO2014128163 A3 WO 2014128163A3
Authority
WO
WIPO (PCT)
Prior art keywords
signal
interference
cancelling
carrier signal
signals
Prior art date
Application number
PCT/EP2014/053236
Other languages
French (fr)
Other versions
WO2014128163A2 (en
Inventor
Dieter Horst
Dan Yu
Yong Yuan
Original Assignee
Siemens Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2014128163A2 publication Critical patent/WO2014128163A2/en
Publication of WO2014128163A3 publication Critical patent/WO2014128163A3/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details 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
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/1081—Reduction of multipath noise
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details 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
    • H04B1/38—Transceivers, 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
    • H04B1/40—Circuits
    • H04B1/50—Circuits using different frequencies for the two directions of communication
    • H04B1/52—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
    • H04B1/525—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa with means for reducing leakage of transmitter signal into the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
    • H04B5/77—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for interrogation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Disclosed in the present invention are an interference elimination device and method, used for eliminating interference in tag signals received by a reader in an RFID system. The device comprises: a control unit, a cancelling signal generating unit, a signal combining unit and a power detector. The cancelling signal generating unit is used for receiving a second carrier signal, a third carrier signal with a phase difference of 90 degrees with respect to the second carrier signal, and a fourth carrier signal with a phase difference of 180 degrees with respect to the second carrier signal, and for adjusting the amplitude of the second carrier signal, the third carrier signal and the fourth carrier signal according to an instruction from the control unit in order to generate multiple cancelling signals. The signal combining unit is used for receiving an interference signal and the multiple cancelling signals, adding or subtracting the interference signal and each of the multiple cancelling signals separately to obtain multiple combined signals, and eliminating the interference signal according to an instruction from the control unit. The power detector is used for detecting the amplitude of each combined signal. The control unit is used for determining an optimum cancelling signal according to the variation in amplitude of the combined signals, and controlling the signal combining unit to use the optimum cancelling signal to eliminate the interference signal. The adoption of the present invention enables elimination of interference to be achieved quickly and at a low cost.
PCT/EP2014/053236 2013-02-22 2014-02-19 Interference elimination device and method WO2014128163A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310057573.3 2013-02-22
CN201310057573.3A CN104009776A (en) 2013-02-22 2013-02-22 Interference elimination device and method

Publications (2)

Publication Number Publication Date
WO2014128163A2 WO2014128163A2 (en) 2014-08-28
WO2014128163A3 true WO2014128163A3 (en) 2014-10-16

Family

ID=50193455

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/053236 WO2014128163A2 (en) 2013-02-22 2014-02-19 Interference elimination device and method

Country Status (2)

Country Link
CN (1) CN104009776A (en)
WO (1) WO2014128163A2 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10652149B2 (en) 2014-11-10 2020-05-12 Lg Electronics Inc. Method and device for transmitting/receiving data using cache memory in wireless communication system supporting relay node
CN105049387B (en) * 2015-06-25 2018-08-17 上海大学 A kind of method interfered to link carrier after elimination RFID system
CN106230472B (en) * 2016-08-03 2018-05-01 江苏本能科技有限公司 Radio-frequency carrier offsets processing method and processing device
US10594358B2 (en) * 2017-04-21 2020-03-17 Futurewei Technologies, Inc. Leakage signal cancellation
CN107229886B (en) * 2017-06-26 2020-05-19 深圳市远望谷信息技术股份有限公司 Method and device for eliminating dynamic self-interference in RFID reader-writer
CN107317599B (en) * 2017-07-24 2019-07-09 北京小米移动软件有限公司 A kind of removing method and device of self-interference signal
CN107506819A (en) * 2017-07-25 2017-12-22 浙江海洋大学 The processing equipment of electric ray wireless identification tag
CN110739982A (en) * 2018-07-20 2020-01-31 四川华大恒芯科技有限公司 devices and methods for realizing carrier wave elimination
CN110071887B (en) * 2019-05-14 2021-08-10 济南市半导体元件实验所 Carrier phase dense modulation device and method
CN112235073B (en) * 2020-10-22 2023-09-01 维沃移动通信有限公司 Interference signal cancellation method, driving integrated circuit and electronic equipment
CN115173886B (en) * 2022-09-06 2022-11-29 深圳市国芯物联科技有限公司 Echo cancellation system applied to long-distance UHF RFID reader-writer
CN115580316B (en) * 2022-11-09 2023-04-07 广东省新一代通信与网络创新研究院 Radio frequency front-end circuit and circuit board for 5G NR-U frequency band

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009056410A1 (en) * 2007-11-01 2009-05-07 Siemens Aktiengesellschaft A self-interfering signal elimination device and method and rfid reader

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009056410A1 (en) * 2007-11-01 2009-05-07 Siemens Aktiengesellschaft A self-interfering signal elimination device and method and rfid reader

Also Published As

Publication number Publication date
WO2014128163A2 (en) 2014-08-28
CN104009776A (en) 2014-08-27

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