DE3854505T2 - Phasengesteuerte Demodulationseinrichtung zur digitalen Kommunikation. - Google Patents

Phasengesteuerte Demodulationseinrichtung zur digitalen Kommunikation.

Info

Publication number
DE3854505T2
DE3854505T2 DE3854505T DE3854505T DE3854505T2 DE 3854505 T2 DE3854505 T2 DE 3854505T2 DE 3854505 T DE3854505 T DE 3854505T DE 3854505 T DE3854505 T DE 3854505T DE 3854505 T2 DE3854505 T2 DE 3854505T2
Authority
DE
Germany
Prior art keywords
phase
digital communication
demodulation device
controlled demodulation
controlled
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
DE3854505T
Other languages
English (en)
Other versions
DE3854505D1 (de
Inventor
Shousei Yoshida
Susumu Otani
Toshiya 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 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
Application granted granted Critical
Publication of DE3854505D1 publication Critical patent/DE3854505D1/de
Publication of DE3854505T2 publication Critical patent/DE3854505T2/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
DE3854505T 1987-06-23 1988-06-22 Phasengesteuerte Demodulationseinrichtung zur digitalen Kommunikation. Expired - Lifetime DE3854505T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP62-156044A JPH01843A (ja) 1987-06-23 Ｃ／ｎ測定回路
JP62-156045A JPH01844A (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
DE3854505D1 DE3854505D1 (de) 1995-10-26
DE3854505T2 true DE3854505T2 (de) 1996-02-22

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 Before (1)

Application Number Title Priority Date Filing Date
DE3886107T Expired - Lifetime DE3886107T2 (de) 1987-06-23 1988-06-22 Träger/Rausch-Detektor für digitale Übertragungssysteme.

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)

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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
US7423987B2 (en) * 2001-04-27 2008-09-09 The Directv Group, Inc. Feeder link configurations to support layered modulation for digital signals
US7151807B2 (en) * 2001-04-27 2006-12-19 The Directv Group, Inc. Fast acquisition of timing and carrier frequency from received signal
US7583728B2 (en) * 2002-10-25 2009-09-01 The Directv Group, Inc. Equalizers for layered modulated and other signals
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
US7209524B2 (en) * 2001-04-27 2007-04-24 The Directv Group, Inc. Layered modulation for digital signals
US7184473B2 (en) * 2001-04-27 2007-02-27 The Directv Group, Inc. Equalizers for layered modulated and other signals
US7822154B2 (en) * 2001-04-27 2010-10-26 The Directv Group, Inc. Signal, interference and noise power measurement
US7502430B2 (en) * 2001-04-27 2009-03-10 The Directv Group, Inc. Coherent averaging for measuring traveling wave tube amplifier nonlinearity
US7184489B2 (en) * 2001-04-27 2007-02-27 The Directv Group, Inc. Optimization technique for layered modulation
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
US8005035B2 (en) * 2001-04-27 2011-08-23 The Directv Group, Inc. Online output multiplexer filter measurement
US7471735B2 (en) * 2001-04-27 2008-12-30 The Directv Group, Inc. Maximizing power and spectral efficiencies for layered and conventional modulations
US7483505B2 (en) * 2001-04-27 2009-01-27 The Directv Group, Inc. Unblind equalizer architecture for digital communication systems
US7076001B2 (en) * 2001-10-16 2006-07-11 Harris Corporation System and method for an in-service decision-directed signal to noise ratio estimator
KR100927287B1 (ko) * 2001-11-27 2009-11-18 소니 가부시끼 가이샤 안테나 레벨 표시 장치 및 방법, 및 수신 장치
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
DE10302362B4 (de) * 2002-06-28 2007-02-22 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
AU2003280499A1 (en) 2002-07-01 2004-01-19 The Directv Group, Inc. Improving hierarchical 8psk performance
EP1529347B1 (de) * 2002-07-03 2016-08-24 The Directv Group, Inc. Verfahren und vorrichtung zur modulation in schichten
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
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ATE461553T1 (de) * 2002-10-25 2010-04-15 Directv Group Inc Schätzen des arbeitspunkts eines nichtlinearenausbreitungswellenrührenverstärker
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Also Published As

Publication number Publication date
EP0497433A2 (de) 1992-08-05
EP0497433A3 (en) 1992-09-23
AU594621B2 (en) 1990-03-08
DE3886107D1 (de) 1994-01-20
CA1332450C (en) 1994-10-11
EP0296822A3 (en) 1989-12-13
EP0497433B1 (de) 1995-09-20
DE3886107T2 (de) 1994-05-26
EP0296822B1 (de) 1993-12-08
AU1824888A (en) 1989-01-05
US4835790A (en) 1989-05-30
EP0296822A2 (de) 1988-12-28
DE3854505D1 (de) 1995-10-26

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition