EA200200054A1 - Способ и устройство определения характеристик компонента канала связи - Google Patents

Способ и устройство определения характеристик компонента канала связи

Info

Publication number
EA200200054A1
EA200200054A1 EA200200054A EA200200054A EA200200054A1 EA 200200054 A1 EA200200054 A1 EA 200200054A1 EA 200200054 A EA200200054 A EA 200200054A EA 200200054 A EA200200054 A EA 200200054A EA 200200054 A1 EA200200054 A1 EA 200200054A1
Authority
EA
Eurasian Patent Office
Prior art keywords
signal
communication channel
carrier
spectrum
determining
Prior art date
Application number
EA200200054A
Other languages
English (en)
Other versions
EA004457B1 (ru
Inventor
Герхард Бетшайдер
Ги Арль
Original Assignee
Сосьете Эропеен Де Сателит С.А.
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 Сосьете Эропеен Де Сателит С.А. filed Critical Сосьете Эропеен Де Сателит С.А.
Publication of EA200200054A1 publication Critical patent/EA200200054A1/ru
Publication of EA004457B1 publication Critical patent/EA004457B1/ru

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay
    • H04B7/18519—Operations control, administration or maintenance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/0082—Monitoring; Testing using service channels; using auxiliary channels
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electromagnetism (AREA)
  • Astronomy & Astrophysics (AREA)
  • Quality & Reliability (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Radio Relay Systems (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

Abstract

Изобретение относится к способу и устройству определения характеристик компонент канала связи. Для упрощения межсистемной координации во время проверочных испытаний канала спутниковой связи при вводе его в эксплуатацию и во избежание помех от соседних спутниковых систем, способ согласно изобретению заключается в том, что выполняют модуляцию сигнала f(t) с чистой несущей посредством модуляции с расширением по спектру для генерации сигнала s(t) с расширением чистой несущей по спектру; осуществляют передачу сигнала s(t) с расширением чистой несущей по спектру через указанный канал связи с первым заданным уровнем; осуществляют прием принимаемого сигнала s'(t), соответствующего сигналу s(t) с расширением чистой несущей по спектру после его прохождения через указанный канал связи; выполняют демодуляцию указанного принимаемого сигнала s'(t) посредством демодуляции с расширением по спектру для генерации сигнала f'(t) с сжатием несущей по спектру; определяют характеристики компонент канала связи на основе сравнения сигнала f(t) с чистой несущей и сигнала f'(t) с сжатием несущей по спектру.Международная заявка была опубликована вместе с отчетом о международном поиске.
EA200200054A 1999-06-18 1999-06-18 Способ и устройство определения характеристик компонент канала связи EA004457B1 (ru)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP1999/004241 WO2000079708A1 (en) 1999-06-18 1999-06-18 Method and apparatus for determining characteristics of components of a communication channel

Publications (2)

Publication Number Publication Date
EA200200054A1 true EA200200054A1 (ru) 2002-06-27
EA004457B1 EA004457B1 (ru) 2004-04-29

Family

ID=8167339

Family Applications (1)

Application Number Title Priority Date Filing Date
EA200200054A EA004457B1 (ru) 1999-06-18 1999-06-18 Способ и устройство определения характеристик компонент канала связи

Country Status (14)

Country Link
US (1) US6934314B2 (ru)
EP (1) EP1186126B1 (ru)
JP (1) JP4197869B2 (ru)
AT (1) ATE302509T1 (ru)
AU (1) AU763129C (ru)
BR (1) BR9917381B1 (ru)
CA (1) CA2375846C (ru)
CY (1) CY1105261T1 (ru)
DE (1) DE69926808T2 (ru)
DK (1) DK1186126T3 (ru)
EA (1) EA004457B1 (ru)
ES (1) ES2251835T3 (ru)
HK (1) HK1041377B (ru)
WO (1) WO2000079708A1 (ru)

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ES2243586T3 (es) * 2000-11-24 2005-12-01 Nokia Corporation Medidas de componentes.
US7583728B2 (en) 2002-10-25 2009-09-01 The Directv Group, Inc. Equalizers for layered modulated and other signals
WO2004040403A2 (en) 2001-04-27 2004-05-13 The Directv Group, Inc. Lower complexity layered modulation signal processor
US7502430B2 (en) 2001-04-27 2009-03-10 The Directv Group, Inc. Coherent averaging for measuring traveling wave tube amplifier nonlinearity
US7471735B2 (en) 2001-04-27 2008-12-30 The Directv Group, Inc. Maximizing power and spectral efficiencies for layered and conventional modulations
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
US7151807B2 (en) * 2001-04-27 2006-12-19 The Directv Group, Inc. Fast acquisition of timing and carrier frequency from received signal
US7822154B2 (en) * 2001-04-27 2010-10-26 The Directv Group, Inc. Signal, interference and noise power measurement
US8005035B2 (en) 2001-04-27 2011-08-23 The Directv Group, Inc. Online output multiplexer filter measurement
US7778365B2 (en) 2001-04-27 2010-08-17 The Directv Group, Inc. Satellite TWTA on-line non-linearity measurement
US7184473B2 (en) * 2001-04-27 2007-02-27 The Directv Group, Inc. Equalizers for layered modulated and other signals
US7423987B2 (en) 2001-04-27 2008-09-09 The Directv Group, Inc. Feeder link configurations to support layered modulation for digital signals
US7184489B2 (en) * 2001-04-27 2007-02-27 The Directv Group, Inc. Optimization technique for layered modulation
US7173981B1 (en) 2001-04-27 2007-02-06 The Directv Group, Inc. Dual layer signal processing in a layered modulation digital signal system
US7639759B2 (en) 2001-04-27 2009-12-29 The Directv Group, Inc. Carrier to noise ratio estimations from a received signal
US7209524B2 (en) * 2001-04-27 2007-04-24 The Directv Group, Inc. Layered modulation for digital signals
US7483505B2 (en) 2001-04-27 2009-01-27 The Directv Group, Inc. Unblind equalizer architecture for digital communication systems
DE10130687A1 (de) * 2001-06-26 2003-01-02 Rohde & Schwarz Meßsystem mit einem Referenzsignal zwischen einem Signalgenerator und einem Signalanalysator
CA2489569C (en) 2002-07-01 2012-05-22 The Directv Group, Inc. Improving hierarchical 8psk performance
CA2491259C (en) 2002-07-03 2013-09-17 The Directv Group, Inc. Method and apparatus for layered modulation
US7529312B2 (en) 2002-10-25 2009-05-05 The Directv Group, Inc. Layered modulation for terrestrial ATSC applications
US7474710B2 (en) 2002-10-25 2009-01-06 The Directv Group, Inc. Amplitude and phase matching for layered modulation reception
ES2343005T3 (es) * 2002-10-25 2010-07-21 The Directv Group, Inc. Estimacion del punto de funcionamiento en un amplificador de tubo de ondas viajeras no lineal.
US7463676B2 (en) * 2002-10-25 2008-12-09 The Directv Group, Inc. On-line phase noise measurement for layered modulation
DE60335295D1 (de) * 2002-10-25 2011-01-20 Directv Group Inc Verfahren und vorrichtung zum anpassen von trägerleistungsanforderungen gemäss verfügbarkeit in geschichteten modulationssystemen
US7054391B2 (en) * 2003-05-30 2006-05-30 Efficient Channel Coding, Inc. Receiver based saturation estimator
US7502429B2 (en) 2003-10-10 2009-03-10 The Directv Group, Inc. Equalization for traveling wave tube amplifier nonlinearity measurements
US20050175119A1 (en) * 2004-02-09 2005-08-11 Worley David A. Forward link quality link monitoring apparatus and method
US7221704B2 (en) * 2005-08-01 2007-05-22 Marvell World Trade Ltd. All digital implementation of clock spectrum spreading (dither) for low power/die area
EP2228916A1 (en) * 2009-03-12 2010-09-15 Astrim Limited Interference removal
EP2413524B1 (en) * 2010-07-28 2013-01-16 Telefonaktiebolaget L M Ericsson (PUBL) Method and apparatus for determining signal path properties
CA2913564A1 (en) * 2015-11-27 2017-05-27 Telesat Canada Satellite communications subsystem in-orbit verification system and methodologies

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US4637017A (en) * 1984-05-21 1987-01-13 Communications Satellite Corporation Monitoring of input backoff in time division multiple access communication satellites
DE3644175A1 (de) * 1986-12-23 1988-07-14 Messerschmitt Boelkow Blohm Verfahren zur uebertragung von daten mit satelliten
US5546421A (en) * 1994-08-22 1996-08-13 Martin Marietta Corp. Self compensating spread-spectrum hybrid
US5799005A (en) * 1996-04-30 1998-08-25 Qualcomm Incorporated System and method for determining received pilot power and path loss in a CDMA communication system
EP0929164B1 (en) * 1997-12-18 2000-03-15 Société Européenne des Satellites Method and apparatus for determining an operating point of a non-linear amplifier of a communication channel
EP0967744B1 (en) * 1997-12-18 2003-09-17 SES Astra S.A. Method and apparatus for determining characteristics of components of a communication channel under load

Also Published As

Publication number Publication date
JP2003502935A (ja) 2003-01-21
CA2375846A1 (en) 2000-12-28
HK1041377A1 (en) 2002-07-05
WO2000079708A1 (en) 2000-12-28
EP1186126A1 (en) 2002-03-13
ES2251835T3 (es) 2006-05-01
HK1041377B (en) 2006-04-07
AU763129B2 (en) 2003-07-17
US6934314B2 (en) 2005-08-23
CA2375846C (en) 2008-11-04
AU4613699A (en) 2001-01-09
BR9917381B1 (pt) 2014-05-20
ATE302509T1 (de) 2005-09-15
DE69926808T2 (de) 2006-06-29
US20020094015A1 (en) 2002-07-18
JP4197869B2 (ja) 2008-12-17
EA004457B1 (ru) 2004-04-29
DE69926808D1 (de) 2005-09-22
DK1186126T3 (da) 2006-01-02
AU763129C (en) 2004-02-19
CY1105261T1 (el) 2010-03-03
BR9917381A (pt) 2002-03-26
EP1186126B1 (en) 2005-08-17

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