BR112023003628A2 - Aparelho, método e meio legível por computador contendo instruções - Google Patents

Aparelho, método e meio legível por computador contendo instruções

Info

Publication number
BR112023003628A2
BR112023003628A2 BR112023003628A BR112023003628A BR112023003628A2 BR 112023003628 A2 BR112023003628 A2 BR 112023003628A2 BR 112023003628 A BR112023003628 A BR 112023003628A BR 112023003628 A BR112023003628 A BR 112023003628A BR 112023003628 A2 BR112023003628 A2 BR 112023003628A2
Authority
BR
Brazil
Prior art keywords
distortion
transmitter
equalizer
receiver
mimo
Prior art date
Application number
BR112023003628A
Other languages
English (en)
Inventor
Chau Ng Wing
Tang Xuefeng
Zhang Zhuhong
Original Assignee
Huawei Tech Co Ltd
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 Huawei Tech Co Ltd filed Critical Huawei Tech Co Ltd
Publication of BR112023003628A2 publication Critical patent/BR112023003628A2/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/60—Receivers
    • H04B10/61—Coherent receivers
    • H04B10/616—Details of the electronic signal processing in coherent optical receivers
    • H04B10/6165—Estimation of the phase of the received optical signal, phase error estimation or phase error correction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03891—Spatial equalizers
    • H04L25/03961—Spatial equalizers design criteria
    • H04L25/03968—Spatial equalizers design criteria mean-square error [MSE]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2507—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/40—Transceivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/60—Receivers
    • H04B10/61—Coherent receivers
    • H04B10/613—Coherent receivers including phase diversity, e.g., having in-phase and quadrature branches, as in QPSK coherent receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/60—Receivers
    • H04B10/61—Coherent receivers
    • H04B10/616—Details of the electronic signal processing in coherent optical receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03178—Arrangements involving sequence estimation techniques
    • H04L25/03248—Arrangements for operating in conjunction with other apparatus
    • H04L25/03273—Arrangements for operating in conjunction with other apparatus with carrier recovery circuitry
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03878—Line equalisers; line build-out devices
    • H04L25/03885—Line equalisers; line build-out devices adaptive
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03426—Arrangements for removing intersymbol interference characterised by the type of transmission transmission using multiple-input and multiple-output channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/03433—Arrangements for removing intersymbol interference characterised by equaliser structure
    • H04L2025/03535—Variable structures
    • H04L2025/03541—Switching between domains, e.g. between time and frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Quality & Reliability (AREA)
  • Optical Communication System (AREA)
  • Radio Transmission System (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

APARELHO, MÉTODO E MEIO LEGÍVEL POR COMPUTADOR CONTENDO INSTRUÇÕES. A presente invenção refere-se a métodos e aparelhos para calibração de distorção de tempo de IQ em um transceptor coerente são descritos. Um sinal de quatro canais é recebido. Um conjunto de entradas é construído para um equalizador 4x8 MIMO, convertendo o sinal de quatro canais em quatro entradas complexas, cada uma com uma mudança de fase correspondente a um deslocamento estimado da frequência da portadora. O conjunto de entradas inclui ainda réplicas conjugadas das quatro entradas complexas. Usando a saída do equalizador 4x8 MIMO, os coeficientes do equalizador são calculados minimizando o erro entre a saída MIMO e um sinal de referência. A distorção de IQ do receptor e do transmissor é estimada usando os coeficientes do equalizador, convertendo os coeficientes do equalizador do domínio do tempo para o domínio de frequência para determinar as respostas de fase diferencial de IQ do receptor e do transmissor, que são indicativas da respectiva distorção de IQ do receptor e do transmissor no domínio do tempo. A compensação de distorção é então executada.
BR112023003628A 2020-08-31 2021-04-03 Aparelho, método e meio legível por computador contendo instruções BR112023003628A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US17/008,402 US11277207B1 (en) 2020-08-31 2020-08-31 Apparatus and method for in-phase and quadrature skew calibration in a coherent transceiver
PCT/CN2021/085486 WO2022041735A1 (en) 2020-08-31 2021-04-03 Apparatus and method for in-phase and quadrature skew calibration in coherent transceiver

Publications (1)

Publication Number Publication Date
BR112023003628A2 true BR112023003628A2 (pt) 2023-03-28

Family

ID=77179383

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112023003628A BR112023003628A2 (pt) 2020-08-31 2021-04-03 Aparelho, método e meio legível por computador contendo instruções

Country Status (5)

Country Link
US (1) US11277207B1 (pt)
EP (1) EP4197128A4 (pt)
CN (1) CN116210175A (pt)
BR (1) BR112023003628A2 (pt)
WO (1) WO2022041735A1 (pt)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7196995B2 (ja) * 2019-03-26 2022-12-27 日本電気株式会社 波長多重光伝送システム、波長多重光伝送方法及びプログラム
US11581951B1 (en) * 2022-01-31 2023-02-14 Huawei Technologies Co., Ltd. Apparatuses and methods of far-end transmitter skew monitoring in digital subcarrier multiplexing systems
CN116546613B (zh) * 2023-06-26 2023-11-21 高拓讯达(北京)微电子股份有限公司 无线局域网i/q时间不平衡的确定方法、装置、设备及介质

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8737847B2 (en) * 2012-03-19 2014-05-27 Futurewei Technologies, Inc. Method and apparatus of using joint timing recovery for a coherent optical system
CN106330320B (zh) 2015-06-24 2019-05-24 中兴通讯股份有限公司 一种自适应均衡器及其实现自适应均衡处理的方法
EP3121976A1 (en) * 2015-07-23 2017-01-25 Xieon Networks S.à r.l. Signal processing in an optical receiver
US10038498B1 (en) * 2015-09-04 2018-07-31 Inphi Corporation Apparatus and methods for timing tone based transmitter skew alignment in an optical communication system
US9847841B1 (en) 2016-12-14 2017-12-19 Alcatel-Lucent Usa Inc. I/Q imbalance correction for an optical-transport system
US10547408B2 (en) * 2018-05-03 2020-01-28 Juniper Networks, Inc. Methods and apparatus for improving the skew tolerance of a coherent optical transponder in an optical communication system
CN111585646B (zh) 2019-02-19 2023-03-31 富士通株式会社 偏振态相对时延的估计装置以及方法

Also Published As

Publication number Publication date
US11277207B1 (en) 2022-03-15
EP4197128A4 (en) 2024-03-06
CN116210175A (zh) 2023-06-02
WO2022041735A1 (en) 2022-03-03
EP4197128A1 (en) 2023-06-21

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