DE3886107T2 - Träger/Rausch-Detektor für digitale Übertragungssysteme. - Google Patents

Träger/Rausch-Detektor für digitale Übertragungssysteme.

Info

Publication number
DE3886107T2
DE3886107T2 DE3886107T DE3886107T DE3886107T2 DE 3886107 T2 DE3886107 T2 DE 3886107T2 DE 3886107 T DE3886107 T DE 3886107T DE 3886107 T DE3886107 T DE 3886107T DE 3886107 T2 DE3886107 T2 DE 3886107T2
Authority
DE
Germany
Prior art keywords
carrier
transmission systems
digital transmission
noise detector
detector
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
DE3886107T
Other languages
English (en)
Other versions
DE3886107D1 (de
Inventor
Shousei C O Nec Corpor Yoshida
Susumu C O Nec Corporati Otani
Toshiya C O Nec Corpo Todoroki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
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
Priority claimed from JP15604587A external-priority patent/JPS64844A/ja
Priority claimed from JP62-156044A external-priority patent/JPH01843A/ja
Priority claimed from JP16210987A external-priority patent/JPS645248A/ja
Priority claimed from JP62175658A external-priority patent/JPS6418339A/ja
Application filed by NEC Corp filed Critical NEC Corp
Publication of DE3886107D1 publication Critical patent/DE3886107D1/de
Application granted granted Critical
Publication of DE3886107T2 publication Critical patent/DE3886107T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
    • H04L27/2271—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals
    • H04L27/2273—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals associated with quadrature demodulation, e.g. Costas loop
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/26—Measuring noise figure; Measuring signal-to-noise ratio
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0016—Stabilisation of local oscillators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0044—Control loops for carrier regulation
    • H04L2027/0063—Elements of loops
    • H04L2027/0067—Phase error detectors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0044—Control loops for carrier regulation
    • H04L2027/0071—Control of loops
    • H04L2027/0075—Error weighting

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
DE3886107T 1987-06-23 1988-06-22 Träger/Rausch-Detektor für digitale Übertragungssysteme. Expired - Lifetime DE3886107T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP15604587A JPS64844A (en) 1987-06-23 1987-06-23 C/n measuring circuit
JP62-156044A JPH01843A (ja) 1987-06-23 Ｃ／ｎ測定回路
JP16210987A JPS645248A (en) 1987-06-29 1987-06-29 C/n measuring circuit
JP62175658A JPS6418339A (en) 1987-07-14 1987-07-14 Pseudo synchronizing detecting circuit

Publications (2)

Publication Number Publication Date
DE3886107D1 DE3886107D1 (de) 1994-01-20
DE3886107T2 true DE3886107T2 (de) 1994-05-26

Family

ID=27473388

Family Applications (2)

Application Number Title Priority Date Filing Date
DE3886107T Expired - Lifetime DE3886107T2 (de) 1987-06-23 1988-06-22 Träger/Rausch-Detektor für digitale Übertragungssysteme.
DE3854505T Expired - Lifetime DE3854505T2 (de) 1987-06-23 1988-06-22 Phasengesteuerte Demodulationseinrichtung zur digitalen Kommunikation.

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE3854505T Expired - Lifetime DE3854505T2 (de) 1987-06-23 1988-06-22 Phasengesteuerte Demodulationseinrichtung zur digitalen Kommunikation.

Country Status (5)

Country Link
US (1) US4835790A (de)
EP (2) EP0497433B1 (de)
AU (1) AU594621B2 (de)
CA (1) CA1332450C (de)
DE (2) DE3886107T2 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10302362A1 (de) * 2002-06-28 2004-01-29 Rohde & Schwarz Gmbh & Co. Kg Verfahren und Vorrichtung zum Bestimmen einer Rauschgröße eines elektronischen Meßobjektes
US6965242B2 (en) 2002-06-28 2005-11-15 Rohde & Schwarz Gmbh & Co. Kg Procedure and apparatus for the determination of the noise level of an electronic object to be measured

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JPH0748750B2 (ja) * 1988-11-15 1995-05-24 日本電気株式会社 同期復調装置
FR2645373A1 (fr) * 1989-03-28 1990-10-05 Js Telecommunications Procede et dispositif de reduction du bruit sur un signal codable a plusieurs niveaux predetermines
FR2661580B1 (fr) * 1990-04-27 1992-06-12 Alcatel Transmission Procede de recuperation de porteuse pour modulation a grand nombre d'etats et dispositif de mise en óoeuvre de ce procede.
US5208835A (en) * 1990-09-24 1993-05-04 In-Situ, Inc. Automatic frequency control system and method for frequency-shift-key data transmission systems
US5341402A (en) * 1991-02-19 1994-08-23 Tokyo Electric Co., Ltd. Automatic frequency control method and device for use in receiver
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KR960005386B1 (ko) * 1991-06-28 1996-04-24 모토로라 인코포레이티드 적응형 필터에 의한 자동 주파수 제어방법 및 장치
US5233633A (en) * 1991-06-28 1993-08-03 Motorola, Inc. Automatic frequency control by an adaptive filter
US5255290A (en) * 1992-08-21 1993-10-19 Teknekron Communications System, Inc. Method and apparatus for combined frequency offset and timing offset estimation
US5376894A (en) * 1992-12-31 1994-12-27 Pacific Communication Sciences, Inc. Phase estimation and synchronization using a PSK demodulator
US5440582A (en) * 1993-05-28 1995-08-08 Motorola, Inc. Method and apparatus for determining signal usability
US5440590A (en) * 1993-11-01 1995-08-08 Motorola, Inc. Method and apparatus for producing a usable signal from received diverse modulated signals
FR2721778B1 (fr) * 1994-06-23 1996-09-06 France Telecom Procédé d'estimation d'une erreur de phase résiduelle sur les échantillons d'un signal numérique démodulé, et procédé de correction correspondant.
EP1133074B1 (de) * 1995-07-19 2009-04-22 Nec Corporation Diversity-Übertragungssystem mit Kodevielfachzugriff
US6026131A (en) * 1995-12-27 2000-02-15 Laurent; Souef Automatic gain control systems
DE19646164A1 (de) * 1996-11-08 1998-05-14 Deutsche Telekom Ag Verfahren zur Übertragung digitaler Signale
US6115395A (en) * 1996-11-15 2000-09-05 3Com Corporation Method of detecting network impairments for high speed data communication over conventional subscriber lines
US5901173A (en) * 1996-12-09 1999-05-04 Raytheon Company Noise Estimator
JPH10190497A (ja) * 1996-12-27 1998-07-21 Fujitsu Ltd Ｓｉｒ測定装置
SE9702370L (sv) * 1997-06-19 1998-12-20 Ericsson Telefon Ab L M Balanserad diversitet
GB2327176B (en) * 1997-07-08 2002-04-24 Ericsson Telefon Ab L M Signal quality measurement
JP3821331B2 (ja) * 1997-10-31 2006-09-13 ソニー株式会社 通信端末装置及びセルラー無線通信システム並びに情報通信方法
JP3392028B2 (ja) * 1997-11-28 2003-03-31 株式会社ケンウッド 階層化伝送ディジタル復調器
US6229847B1 (en) 1997-12-24 2001-05-08 The United States Of America As Represented By The Secretary Of The Navy Signal quality measurement device
US6219095B1 (en) 1998-02-10 2001-04-17 Wavetek Corporation Noise measurement system
EP1108297B1 (de) * 1998-08-28 2003-07-02 Siemens Aktiengesellschaft Verfahren und vorrichtung zur messung der übertragungsqualität eines übertragungskanals
US6430237B1 (en) * 1998-11-16 2002-08-06 Transamerica Business Credit Corporation Method for accurate signal-to-interference measurement for wireless communication receivers
JP3968546B2 (ja) * 1998-12-08 2007-08-29 ソニー株式会社 情報処理装置および方法、並びに提供媒体
JP2000341160A (ja) * 1999-05-28 2000-12-08 Matsushita Electric Ind Co Ltd 自己診断モードを有する受信機
JP2000349842A (ja) * 1999-06-02 2000-12-15 Matsushita Electric Ind Co Ltd 衛星放送用の受信機の自己診断方法
FR2796227B1 (fr) * 1999-07-08 2007-05-04 Cit Alcatel Procede d'estimation du rapport signal a bruit dans un recepteur de telecommunications et application de ce procede au controle d'un emetteur
JP3318291B2 (ja) * 1999-08-31 2002-08-26 株式会社環境電磁技術研究所 擬似雑音発生装置
US6397041B1 (en) * 1999-12-22 2002-05-28 Radio Propagation Services, Inc. Broadcast monitoring and control system
US6735538B1 (en) * 2000-03-29 2004-05-11 Advantest Corporation Apparatus and method for measuring quality measure of phase noise waveform
US7038605B2 (en) 2000-10-17 2006-05-02 Advantest Corporation Apparatus and method for measuring noise, and recording medium
JP3559237B2 (ja) * 2000-11-09 2004-08-25 松下電器産業株式会社 希望波対干渉波電力比測定回路および希望波対干渉波電力比測定方法
US7483505B2 (en) * 2001-04-27 2009-01-27 The Directv Group, Inc. Unblind equalizer architecture for digital communication systems
US7471735B2 (en) 2001-04-27 2008-12-30 The Directv Group, Inc. Maximizing power and spectral efficiencies for layered and conventional modulations
US7502430B2 (en) * 2001-04-27 2009-03-10 The Directv Group, Inc. Coherent averaging for measuring traveling wave tube amplifier nonlinearity
US8005035B2 (en) * 2001-04-27 2011-08-23 The Directv Group, Inc. Online output multiplexer filter measurement
US7822154B2 (en) * 2001-04-27 2010-10-26 The Directv Group, Inc. Signal, interference and noise power measurement
US7184473B2 (en) * 2001-04-27 2007-02-27 The Directv Group, Inc. Equalizers for layered modulated and other signals
US7184489B2 (en) * 2001-04-27 2007-02-27 The Directv Group, Inc. Optimization technique for layered modulation
US7583728B2 (en) * 2002-10-25 2009-09-01 The Directv Group, Inc. Equalizers for layered modulated and other signals
US7151807B2 (en) * 2001-04-27 2006-12-19 The Directv Group, Inc. Fast acquisition of timing and carrier frequency from received signal
WO2004040403A2 (en) * 2001-04-27 2004-05-13 The Directv Group, Inc. Lower complexity layered modulation signal processor
US7639759B2 (en) * 2001-04-27 2009-12-29 The Directv Group, Inc. Carrier to noise ratio estimations from a received signal
US7173981B1 (en) 2001-04-27 2007-02-06 The Directv Group, Inc. Dual layer signal processing in a layered modulation digital signal system
US7245671B1 (en) * 2001-04-27 2007-07-17 The Directv Group, Inc. Preprocessing signal layers in a layered modulation digital signal system to use legacy receivers
US7423987B2 (en) * 2001-04-27 2008-09-09 The Directv Group, Inc. Feeder link configurations to support layered modulation for digital signals
US7209524B2 (en) * 2001-04-27 2007-04-24 The Directv Group, Inc. Layered modulation for digital signals
US7076001B2 (en) * 2001-10-16 2006-07-11 Harris Corporation System and method for an in-service decision-directed signal to noise ratio estimator
US6982745B2 (en) * 2001-11-27 2006-01-03 Sony Corporation Antenna level display device and method, and receiving apparatus
JP4290470B2 (ja) * 2002-05-09 2009-07-08 パナソニック株式会社 受信品質を推定する受信方法および受信装置と、この受信装置を利用した通信システム
CA2489569C (en) 2002-07-01 2012-05-22 The Directv Group, Inc. Improving hierarchical 8psk performance
WO2004006455A1 (en) * 2002-07-03 2004-01-15 The Directv Group, Inc. Method and apparatus for layered modulation
FR2842373B1 (fr) * 2002-07-09 2006-02-03 Imra Europe Sa Procede de selection de signaux d'antennes dans un systeme de diversite d'antennes
KR100461543B1 (ko) * 2002-10-14 2004-12-16 한국전자통신연구원 다중 안테나 고속패킷전송 시스템에서 신호대 간섭비 측정장치 및 그 방법
US7463676B2 (en) * 2002-10-25 2008-12-09 The Directv Group, Inc. On-line phase noise measurement for layered modulation
ATE461553T1 (de) * 2002-10-25 2010-04-15 Directv Group Inc Schätzen des arbeitspunkts eines nichtlinearenausbreitungswellenrührenverstärker
US7474710B2 (en) * 2002-10-25 2009-01-06 The Directv Group, Inc. Amplitude and phase matching for layered modulation reception
US7529312B2 (en) * 2002-10-25 2009-05-05 The Directv Group, Inc. Layered modulation for terrestrial ATSC applications
ATE491296T1 (de) * 2002-10-25 2010-12-15 Directv Group Inc Verfahren und vorrichtung zum anpassen von trägerleistungsanforderungen gemäss verfügbarkeit in geschichteten modulationssystemen
KR100492004B1 (ko) * 2002-11-01 2005-05-30 한국전자통신연구원 미세전자기계적 시스템 기술을 이용한 고주파 소자
US7502429B2 (en) * 2003-10-10 2009-03-10 The Directv Group, Inc. Equalization for traveling wave tube amplifier nonlinearity measurements
CN104849575B (zh) * 2015-05-25 2017-12-08 南京师范大学 一种基于时频分析的同频辐射噪声源诊断方法

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JPH0748750B2 (ja) * 1988-11-15 1995-05-24 日本電気株式会社 同期復調装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10302362A1 (de) * 2002-06-28 2004-01-29 Rohde & Schwarz Gmbh & Co. Kg Verfahren und Vorrichtung zum Bestimmen einer Rauschgröße eines elektronischen Meßobjektes
US6965242B2 (en) 2002-06-28 2005-11-15 Rohde & Schwarz Gmbh & Co. Kg Procedure and apparatus for the determination of the noise level of an electronic object to be measured
DE10302362B4 (de) * 2002-06-28 2007-02-22 Rohde & Schwarz Gmbh & Co. Kg Verfahren und Vorrichtung zum Bestimmen einer Rauschgröße eines elektronischen Meßobjektes

Also Published As

Publication number Publication date
DE3886107D1 (de) 1994-01-20
AU1824888A (en) 1989-01-05
EP0497433A3 (en) 1992-09-23
EP0296822A3 (en) 1989-12-13
CA1332450C (en) 1994-10-11
AU594621B2 (en) 1990-03-08
EP0497433A2 (de) 1992-08-05
DE3854505D1 (de) 1995-10-26
US4835790A (en) 1989-05-30
EP0497433B1 (de) 1995-09-20
DE3854505T2 (de) 1996-02-22
EP0296822A2 (de) 1988-12-28
EP0296822B1 (de) 1993-12-08

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