DE60330691D1 - Signal-, störungs- und rauschleistungsmessung - Google Patents

Signal-, störungs- und rauschleistungsmessung

Info

Publication number
DE60330691D1
DE60330691D1 DE60330691T DE60330691T DE60330691D1 DE 60330691 D1 DE60330691 D1 DE 60330691D1 DE 60330691 T DE60330691 T DE 60330691T DE 60330691 T DE60330691 T DE 60330691T DE 60330691 D1 DE60330691 D1 DE 60330691D1
Authority
DE
Germany
Prior art keywords
fault
signal
noise measurement
noise
measurement
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
DE60330691T
Other languages
English (en)
Inventor
Ernest C Chen
Chinh Tran
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.)
DirecTV Group Inc
Original Assignee
DirecTV Group Inc
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 DirecTV Group Inc filed Critical DirecTV Group Inc
Application granted granted Critical
Publication of DE60330691D1 publication Critical patent/DE60330691D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H04B7/18515—Transmission equipment in satellites or space-based relays
    • 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
    • H04B17/318—Received signal strength
    • 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
    • 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
    • H04B7/18523—Satellite systems for providing broadcast service to terrestrial stations, i.e. broadcast satellite service
    • H04B7/18526—Arrangements for data linking, networking or transporting, or for controlling an end to end session
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • H04L1/206—Arrangements for detecting or preventing errors in the information received using signal quality detector for modulated signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • H04L1/208—Arrangements for detecting or preventing errors in the information received using signal quality detector involving signal re-encoding
    • 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
    • H04L27/183—Multiresolution systems
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/36—Modulator circuits; Transmitter circuits
    • H04L27/366—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator
    • 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
    • H04L2027/0053—Closed loops
    • H04L2027/0061—Closed loops remodulation
DE60330691T 2002-09-06 2003-08-26 Signal-, störungs- und rauschleistungsmessung Expired - Lifetime DE60330691D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/236,414 US7822154B2 (en) 2001-04-27 2002-09-06 Signal, interference and noise power measurement
PCT/US2003/026769 WO2004023676A1 (en) 2002-09-06 2003-08-26 Signal, interference and noise power measurement

Publications (1)

Publication Number Publication Date
DE60330691D1 true DE60330691D1 (de) 2010-02-04

Family

ID=31977641

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60330691T Expired - Lifetime DE60330691D1 (de) 2002-09-06 2003-08-26 Signal-, störungs- und rauschleistungsmessung

Country Status (11)

Country Link
US (1) US7822154B2 (de)
EP (1) EP1547278B1 (de)
AR (1) AR041158A1 (de)
AT (1) ATE453254T1 (de)
CA (1) CA2495855C (de)
DE (1) DE60330691D1 (de)
ES (1) ES2338547T3 (de)
IL (1) IL166883A (de)
NO (1) NO334384B1 (de)
TW (1) TWI240507B (de)
WO (1) WO2004023676A1 (de)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7423987B2 (en) 2001-04-27 2008-09-09 The Directv Group, Inc. Feeder link configurations to support layered modulation for digital signals
JP3920137B2 (ja) * 2002-04-26 2007-05-30 ティーオーエー株式会社 デジタル無線受信機
US7161988B2 (en) * 2004-04-12 2007-01-09 The Directv Group, Inc. Method and apparatus for minimizing co-channel interference
US8213553B2 (en) * 2004-04-12 2012-07-03 The Directv Group, Inc. Method and apparatus for identifying co-channel interference
US7672285B2 (en) * 2004-06-28 2010-03-02 Dtvg Licensing, Inc. Method and apparatus for minimizing co-channel interference by scrambling
CA2562549C (en) 2004-04-12 2013-03-19 The Directv Group, Inc. Methods and apparatuses for minimizing co-channel interference
US8493942B2 (en) * 2005-08-01 2013-07-23 Qualcomm Incorporated Interference cancellation in wireless communication
US20080055153A1 (en) * 2006-08-29 2008-03-06 Wildblue Communications, Inc. Network-Access Satellite Communication System
GB0706427D0 (en) * 2007-04-02 2007-05-09 British Telecomm Data recovery scheme
DE102008006628A1 (de) * 2008-01-29 2009-07-30 Deutsche Telekom Ag Verfahren und Vorrichtung zur automatischen Überprüfung der GNSS Signalqualität in Mautgeräten
ES2388572T3 (es) * 2008-09-09 2012-10-16 Koninklijke Philips Electronics N.V. Aparato de determinación de velocidad
US9571142B2 (en) * 2008-10-24 2017-02-14 Anritsu Company Apparatus to detect interference in wireless signals
US20100105346A1 (en) * 2008-10-24 2010-04-29 Anritsu Company Method to detect interference in wireless signals
CA2751945A1 (en) * 2009-02-16 2010-08-19 Elektrobit System Test Oy A method and an apparatus for forming signal estimates
JP4792513B2 (ja) * 2009-04-27 2011-10-12 株式会社エヌ・ティ・ティ・ドコモ 無線通信システムで使用される方法及び通信端末
CN101959237B (zh) * 2009-07-14 2013-06-05 大唐移动通信设备有限公司 提高系统信息更新成功率的方法、系统及装置
CN102083139B (zh) * 2009-11-26 2013-01-09 中国移动通信集团上海有限公司 数据转发控制方法、装置及系统
CN101873621B (zh) * 2010-06-13 2013-01-30 工业和信息化部电信传输研究所 移动多媒体终端的接收机性能测试方法及系统
WO2014120292A1 (en) * 2012-10-19 2014-08-07 Imra America, Inc. Noise detection, diagnostics, and control of mode-locked lasers
US9203659B2 (en) * 2013-06-07 2015-12-01 Samsung Electronics Co., Ltd. Computing system with interference classification mechanism and method of operation thereof
WO2015112197A1 (en) * 2014-01-27 2015-07-30 Eden Rock Communications, Llc Method and system for coexistence of radar and communication systems
DE102014214923A1 (de) * 2014-07-30 2016-02-25 Rohde & Schwarz Gmbh & Co. Kg Verfahren und Vorrichtung zur Ermittlung eines Schätzwertes für eine Rauschleistung
CN109873695B (zh) * 2017-12-05 2022-05-06 航天信息股份有限公司 一种基于昆虫触角仿真的干扰波形插入点确定方法及装置
WO2022184278A1 (en) * 2021-03-05 2022-09-09 Telefonaktiebolaget Lm Ericsson (Publ) Interference detection mechanisms for microwave radio link transceivers

Family Cites Families (252)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US158619A (en) * 1875-01-12 Improvement in clock-movement holders
NL257397A (de) * 1959-10-08
US3383598A (en) * 1965-02-15 1968-05-14 Space General Corp Transmitter for multiplexed phase modulated singaling system
US3879664A (en) * 1973-05-07 1975-04-22 Signatron High speed digital communication receiver
US3878468A (en) * 1974-01-30 1975-04-15 Bell Telephone Labor Inc Joint equalization and carrier recovery adaptation in data transmission systems
US4039961A (en) 1974-09-12 1977-08-02 Nippon Telegraph And Telephone Public Corporation Demodulator for combined digital amplitude and phase keyed modulation signals
US3974449A (en) 1975-03-21 1976-08-10 Bell Telephone Laboratories, Incorporated Joint decision feedback equalization and carrier recovery adaptation in data transmission systems
JPS522253A (en) * 1975-06-24 1977-01-08 Kokusai Denshin Denwa Co Ltd <Kdd> Non-linearity compensation cicuit for high frequency amplifier
JPS5816802B2 (ja) 1978-04-17 1983-04-02 ケイディディ株式会社 高周波増幅器の非線形補償回路
US4213095A (en) * 1978-08-04 1980-07-15 Bell Telephone Laboratories, Incorporated Feedforward nonlinear equalization of modulated data signals
USRE31351E (en) 1978-08-04 1983-08-16 Bell Telephone Laboratories, Incorporated Feedback nonlinear equalization of modulated data signals
US4384355A (en) * 1979-10-15 1983-05-17 Bell Telephone Laboratories, Incorporated Control of coefficient drift for fractionally spaced equalizers
US4253184A (en) * 1979-11-06 1981-02-24 Bell Telephone Laboratories, Incorporated Phase-jitter compensation using periodic harmonically related components
US4422175A (en) 1981-06-11 1983-12-20 Racal-Vadic, Inc. Constrained adaptive equalizer
FR2510331A1 (fr) 1981-07-23 1983-01-28 Leclert Alain Circuit de regeneration d'une onde porteuse
US4416015A (en) 1981-12-30 1983-11-15 Bell Telephone Laboratories, Incorporated Timing acquisition in voiceband data sets
US4500984A (en) * 1982-09-29 1985-02-19 International Telecommunications Satellite Organization Equalizer for reducing crosstalk between two FDM/FM carriers in a satellite communications system
US4519084A (en) * 1982-09-29 1985-05-21 At&T Bell Laboratories Matched filter for combating multipath fading
JPS59124950A (ja) 1982-12-29 1984-07-19 Mitsubishi Petrochem Co Ltd ポリフエニレンエ−テル樹脂組成物
JPS59193658A (ja) 1983-04-18 1984-11-02 Nec Corp 擬似誤り検出回路
FR2546010B1 (fr) * 1983-05-11 1985-07-12 Trt Telecom Radio Electr Dispositif d'egalisation en frequence porteuse commande a partir de la bande de base
FR2546008B1 (fr) * 1983-05-11 1985-07-12 Labo Electronique Physique Circuit d'egalisation adaptative et de demodulation conjointes
US4637017A (en) * 1984-05-21 1987-01-13 Communications Satellite Corporation Monitoring of input backoff in time division multiple access communication satellites
US4709374A (en) 1984-07-05 1987-11-24 American Telephone And Telegraph Company Technique for decision-directed equalizer train/retrain
GB2164823A (en) * 1984-09-17 1986-03-26 Philips Electronic Associated Television transmitter
US4896369A (en) * 1984-12-28 1990-01-23 Harris Corporation Optimal satellite TWT power allocation process for achieving requested availability and maintaining stability in ALPC-type networks
US4654863A (en) * 1985-05-23 1987-03-31 At&T Bell Laboratories Wideband adaptive prediction
US4647873A (en) * 1985-07-19 1987-03-03 General Dynamics, Pomona Division Adaptive linear FM sweep corrective system
DE3539818A1 (de) 1985-11-09 1987-05-14 Bosch Gmbh Robert Verfahren zum digitalen uebertragen von daten und sprache
AU589084B2 (en) 1986-02-08 1989-09-28 Nec Corporation Multilevel modulator capable of producing a composite modulated signal comprising a quadrature amplitude modulated component and a phase modulated component
GB8606572D0 (en) * 1986-03-17 1986-04-23 Hewlett Packard Ltd Analysis of digital radio transmissions
DE3642213C2 (de) 1986-12-10 1994-01-27 Siemens Ag Satelliten-Nachrichtenübertragungssystem
JPH0773218B2 (ja) 1987-04-21 1995-08-02 沖電気工業株式会社 Ａｄｐｃｍ符号化・復号化器
EP0497433B1 (de) * 1987-06-23 1995-09-20 Nec Corporation Phasengesteuerte Demodulationseinrichtung zur digitalen Kommunikation
US4878030A (en) 1987-10-23 1989-10-31 Ford Aerospace & Communications Corporation Linearizer for microwave amplifier
US4800573A (en) * 1987-11-19 1989-01-24 American Telephone And Telegraph Company Equalization arrangement
US4829543A (en) 1987-12-04 1989-05-09 Motorola, Inc. Phase-coherent TDMA quadrature receiver for multipath fading channels
US4847864A (en) * 1988-06-22 1989-07-11 American Telephone And Telegraph Company Phase jitter compensation arrangement using an adaptive IIR filter
US4992747A (en) 1988-08-16 1991-02-12 Myers Glen A Multiple reuse of an FM band
US5043734A (en) 1988-12-22 1991-08-27 Hughes Aircraft Company Discrete autofocus for ultra-high resolution synthetic aperture radar
US5016273A (en) 1989-01-09 1991-05-14 At&E Corporation Dual communication mode video tape recorder
US4993047A (en) * 1989-09-05 1991-02-12 At&T Bell Laboratories Volterra linearizer for digital transmission
DE4001592A1 (de) * 1989-10-25 1991-05-02 Philips Patentverwaltung Empfaenger fuer digitales uebertragungssystem
US5835857A (en) 1990-03-19 1998-11-10 Celsat America, Inc. Position determination for reducing unauthorized use of a communication system
US5206886A (en) 1990-04-16 1993-04-27 Telebit Corporation Method and apparatus for correcting for clock and carrier frequency offset, and phase jitter in mulicarrier modems
US5121414A (en) * 1990-08-09 1992-06-09 Motorola, Inc. Carrier frequency offset equalization
US5703874A (en) * 1990-12-05 1997-12-30 Interdigital Technology Corporation Broadband CDMA overlay system and method
US5581229A (en) 1990-12-19 1996-12-03 Hunt Technologies, Inc. Communication system for a power distribution line
US5111155A (en) * 1991-03-04 1992-05-05 Motorola, Inc. Distortion compensation means and method
US5229765A (en) * 1991-05-08 1993-07-20 Halliburton Logging Services, Inc. SP noise cancellation technique
US5233632A (en) 1991-05-10 1993-08-03 Motorola, Inc. Communication system receiver apparatus and method for fast carrier acquisition
US5337014A (en) 1991-06-21 1994-08-09 Harris Corporation Phase noise measurements utilizing a frequency down conversion/multiplier, direct spectrum measurement technique
CA2076099A1 (en) 1991-09-03 1993-03-04 Howard Leroy Lester Automatic simulcast alignment
US5285480A (en) * 1991-09-03 1994-02-08 General Electric Company Adaptive MLSE-VA receiver for digital cellular radio
JP2776094B2 (ja) 1991-10-31 1998-07-16 日本電気株式会社 可変変調通信方法
US5221908A (en) * 1991-11-29 1993-06-22 General Electric Co. Wideband integrated distortion equalizer
JPH05211670A (ja) * 1992-01-14 1993-08-20 Nec Corp 搬送波電力対雑音電力比検出回路
US5206889A (en) * 1992-01-17 1993-04-27 Hewlett-Packard Company Timing interpolator
US5285474A (en) * 1992-06-12 1994-02-08 The Board Of Trustees Of The Leland Stanford, Junior University Method for equalizing a multicarrier signal in a multicarrier communication system
US5237292A (en) 1992-07-01 1993-08-17 Space Systems/Loral Quadrature amplitude modulation system with compensation for transmission system characteristics
JP3135999B2 (ja) 1992-09-18 2001-02-19 リーダー電子株式会社 Ｃｎ比測定装置
FR2696295B1 (fr) 1992-09-29 1994-12-09 Europ Agence Spatiale Dispositif pour corriger les distorsions non-linéaires d'un amplificateur électronique.
BR9405728A (pt) * 1993-02-17 1995-11-28 Motorola Inc Sistema de comunicação e unidade de comunicação
US5329311A (en) * 1993-05-11 1994-07-12 The University Of British Columbia System for determining noise content of a video signal in the disclosure
US5471508A (en) 1993-08-20 1995-11-28 Hitachi America, Ltd. Carrier recovery system using acquisition and tracking modes and automatic carrier-to-noise estimation
JP3560991B2 (ja) 1993-09-20 2004-09-02 株式会社東芝 適応型最尤系列推定装置
US5513215A (en) * 1993-09-20 1996-04-30 Glenayre Electronics, Inc. High speed simulcast data system using adaptive compensation
US6088590A (en) * 1993-11-01 2000-07-11 Omnipoint Corporation Method and system for mobile controlled handoff and link maintenance in spread spectrum communication
US5412325A (en) * 1993-12-23 1995-05-02 Hughes Aircraft Company Phase noise measurement system and method
US5619503A (en) 1994-01-11 1997-04-08 Ericsson Inc. Cellular/satellite communications system with improved frequency re-use
US5577067A (en) 1994-02-22 1996-11-19 Comsonics, Inc. Data acquisition and storage system for telecommunication equipment to facilitate alignment and realignment of the telecommunications equipment
US5642358A (en) * 1994-04-08 1997-06-24 Ericsson Inc. Multiple beamwidth phased array
US5430770A (en) * 1994-04-22 1995-07-04 Rockwell International Corp. Method and apparatus for composite signal separation and PSK/AM/FM demodulation
EP0683561A1 (de) 1994-05-18 1995-11-22 Guan-Wu Wang Kostengünstiger, rauscharmer Frequenzumsetzer mit Mischer in Selbsterregung für Satellitenempfänger
JP2561028B2 (ja) * 1994-05-26 1996-12-04 日本電気株式会社 サイドローブキャンセラ
US5903546A (en) 1994-08-31 1999-05-11 Sony Corporation Means and method of improving multiplexed transmission and reception by coding and modulating divided digital signals
FR2724522B1 (fr) 1994-09-09 1997-01-17 France Telecom Procede et dispositif de codage-decodage de canal multiresolution en television numerique haute definition et conventionnelle
US5625640A (en) * 1994-09-16 1997-04-29 Hughes Electronics Apparatus for and method of broadcast satellite network return-link signal transmission
US5937004A (en) 1994-10-13 1999-08-10 Fasulo, Ii; Albert Joseph Apparatus and method for verifying performance of digital processing board of an RF receiver
FR2727590B1 (fr) 1994-11-24 1996-12-27 Alcatel Espace Charge utile de satellite a canaux transparents integres
US5603084C1 (en) * 1995-03-02 2001-06-05 Ericsson Inc Method and apparatus for remotely programming a cellular radiotelephone
US5568520A (en) * 1995-03-09 1996-10-22 Ericsson Inc. Slope drift and offset compensation in zero-IF receivers
JP2705623B2 (ja) 1995-03-22 1998-01-28 日本電気株式会社 ダイバーシチ送受信方法及び送受信機
KR100226528B1 (ko) 1995-03-29 1999-10-15 가나이 쓰도무 다중화 압축화상/음성데이타의 복호장치
US5751766A (en) * 1995-04-27 1998-05-12 Applied Signal Technology, Inc. Non-invasive digital communications test system
US5608331A (en) 1995-06-06 1997-03-04 Hughes Electronics Noise measurement test system
US5793818A (en) 1995-06-07 1998-08-11 Discovision Associates Signal processing system
ZA965340B (en) 1995-06-30 1997-01-27 Interdigital Tech Corp Code division multiple access (cdma) communication system
US5671253A (en) 1995-07-12 1997-09-23 Thomson Consumer Electronics, Inc. Apparatus for demodulating and decoding video signals encoded in different formats
US5606286A (en) * 1995-07-27 1997-02-25 Bains; Devendar S. Predistortion linearization
DE19538302C2 (de) * 1995-10-16 2001-03-22 Bosch Gmbh Robert Verfahren zur terrestrischen Übertragung digitaler Signale
JP3788823B2 (ja) 1995-10-27 2006-06-21 株式会社東芝 動画像符号化装置および動画像復号化装置
GB2307152B (en) 1995-11-10 1999-04-07 Motorola Ltd Method and apparatus for enhanced communication capability while maintaining standard channel modulation compatibility
US5956373A (en) 1995-11-17 1999-09-21 Usa Digital Radio Partners, L.P. AM compatible digital audio broadcasting signal transmision using digitally modulated orthogonal noise-like sequences
US6772182B1 (en) 1995-12-08 2004-08-03 The United States Of America As Represented By The Secretary Of The Navy Signal processing method for improving the signal-to-noise ratio of a noise-dominated channel and a matched-phase noise filter for implementing the same
US5828710A (en) 1995-12-11 1998-10-27 Delco Electronics Corporation AFC frequency synchronization network
WO1997039545A1 (fr) * 1996-04-12 1997-10-23 Ntt Mobile Communications Network Inc. Procede et instrument permettant de mesurer le sir de reception et dispositif de commande de puissance d'emission
US6055278A (en) * 1996-04-26 2000-04-25 C-Cor.Net Corporation Linearization circuits and methods
US5815531A (en) 1996-06-12 1998-09-29 Ericsson Inc. Transmitter for encoded data bits
US5732113A (en) * 1996-06-20 1998-03-24 Stanford University Timing and frequency synchronization of OFDM signals
JP3272246B2 (ja) 1996-07-12 2002-04-08 株式会社東芝 デジタル放送受信装置
JPH1054855A (ja) 1996-08-09 1998-02-24 Advantest Corp スペクトラムアナライザ
FI963317A (fi) 1996-08-26 1998-02-27 Nokia Technology Gmbh Monitasoisten, kaksiulotteisten modulaatioaakkostojen kantoaaltosynkronointi
US6411797B1 (en) * 1996-09-20 2002-06-25 Itt Manufacturing Enterprises, Inc. Method and apparatus for performance characterization of satellite transponders
DE69719278T2 (de) * 1996-10-14 2003-11-13 Nippon Telegraph & Telephone Verfahren und Vorrichtung zur Verringerung des Verhältnisses von Spitzen-zu Durchschnittsleistung
DE19646164A1 (de) 1996-11-08 1998-05-14 Deutsche Telekom Ag Verfahren zur Übertragung digitaler Signale
DE19647833B4 (de) * 1996-11-19 2005-07-07 Deutsches Zentrum für Luft- und Raumfahrt e.V. Verfahren zur gleichzeitigen Funkübertragung digitaler Daten zwischen mehreren Teilnehmerstationen und einer Basisstation
US5966416A (en) * 1996-11-21 1999-10-12 Dsp Group, Inc. Verification of PN synchronization in a spread-spectrum communications receiver
US5960040A (en) 1996-12-05 1999-09-28 Raytheon Company Communication signal processors and methods
JP3346198B2 (ja) 1996-12-10 2002-11-18 富士ゼロックス株式会社 能動消音装置
JPH10190497A (ja) * 1996-12-27 1998-07-21 Fujitsu Ltd Ｓｉｒ測定装置
US5978652A (en) 1997-01-10 1999-11-02 Space Systems/Loral, Inc. Common direct broadcasting service system
US5970156A (en) 1997-02-14 1999-10-19 Telefonaktiebolaget Lm Ericsson Method and apparatus for reducing periodic interference in audio signals
US6078645A (en) * 1997-02-20 2000-06-20 Lucent Technologies Inc. Apparatus and method for monitoring full duplex data communications
JP3586348B2 (ja) * 1997-03-05 2004-11-10 富士通株式会社 信号対干渉電力比測定装置及び信号対干渉電力比測定方法並びにｃｄｍａ通信方式下での送信電力制御方法
US5870443A (en) * 1997-03-19 1999-02-09 Hughes Electronics Corporation Symbol timing recovery and tracking method for burst-mode digital communications
US6212360B1 (en) * 1997-04-09 2001-04-03 Ge Capital Spacenet Services, Inc. Methods and apparatus for controlling earth-station transmitted power in a VSAT network
US6040800A (en) 1997-04-22 2000-03-21 Ericsson Inc. Systems and methods for locating remote terminals in radiocommunication systems
US5905943A (en) 1997-04-29 1999-05-18 Globalstar L.P. System for generating and using global radio frequency maps
US6314441B1 (en) 1997-04-30 2001-11-06 Agere Systems Inc Robust method for providing tap leakage in adaptive equalizer systems
US5970098A (en) 1997-05-02 1999-10-19 Globespan Technologies, Inc. Multilevel encoder
US6333924B1 (en) 1997-05-02 2001-12-25 Uscx High latitude geostationary satellite system
JPH10327204A (ja) 1997-05-26 1998-12-08 Nec Corp 等化器を用いた位相同期ループ回路
JPH10336262A (ja) * 1997-05-28 1998-12-18 Ikegami Tsushinki Co Ltd ディジタル信号の伝送品質測定回路
US6019318A (en) 1997-06-16 2000-02-01 Hugehs Electronics Corporation Coordinatable system of inclined geosynchronous satellite orbits
US6134282A (en) 1997-06-18 2000-10-17 Lsi Logic Corporation Method for lowpass filter calibration in a satellite receiver
US5999793A (en) 1997-06-18 1999-12-07 Lsi Logic Corporation Satellite receiver tuner chip with frequency synthesizer having an externally configurable charge pump
US5819157A (en) 1997-06-18 1998-10-06 Lsi Logic Corporation Reduced power tuner chip with integrated voltage regulator for a satellite receiver system
US5870439A (en) 1997-06-18 1999-02-09 Lsi Logic Corporation Satellite receiver tuner chip having reduced digital noise interference
US6539050B1 (en) 1997-06-26 2003-03-25 Hughes Electronics Corporation Method for transmitting wideband signals via a communication system adapted for narrow-band signal transmission
US5966412A (en) 1997-06-30 1999-10-12 Thomson Consumer Electronics, Inc. Apparatus and method for processing a Quadrature Amplitude Modulated (QAM) signal
US6072841A (en) * 1997-07-01 2000-06-06 Hughes Electronics Corporation Block phase estimator for the coherent detection of non-differentially phase modulated data bursts on rician fading channels
US6049566A (en) * 1997-07-24 2000-04-11 Trw Inc. High efficiency signaling with minimum spacecraft hardware
US5970429A (en) 1997-08-08 1999-10-19 Lucent Technologies, Inc. Method and apparatus for measuring electrical noise in devices
US6108374A (en) 1997-08-25 2000-08-22 Lucent Technologies, Inc. System and method for measuring channel quality information
US6125148A (en) 1997-08-29 2000-09-26 Telefonaktiebolaget Lm Ericsson Method for demodulating information in a communication system that supports multiple modulation schemes
US6052586A (en) * 1997-08-29 2000-04-18 Ericsson Inc. Fixed and mobile satellite radiotelephone systems and methods with capacity sharing
US5940025A (en) 1997-09-15 1999-08-17 Raytheon Company Noise cancellation method and apparatus
US6272679B1 (en) 1997-10-17 2001-08-07 Hughes Electronics Corporation Dynamic interference optimization method for satellites transmitting multiple beams with common frequencies
US6434384B1 (en) * 1997-10-17 2002-08-13 The Boeing Company Non-uniform multi-beam satellite communications system and method
US6002713A (en) 1997-10-22 1999-12-14 Pc Tel, Inc. PCM modem equalizer with adaptive compensation for robbed bit signalling
US6477398B1 (en) 1997-11-13 2002-11-05 Randell L. Mills Resonant magnetic susceptibility imaging (ReMSI)
US5966048A (en) 1997-11-25 1999-10-12 Hughes Electronics Corporation Low IMD amplification method and apparatus
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
ATE190785T1 (de) 1997-12-18 2000-04-15 Europ Des Satellites Soc Verfahren und vorrichtung zur festlegung eines arbeitspunktes eines nichtlinearen verstärkers in einem übertragungskanal
WO1999033166A1 (de) 1997-12-18 1999-07-01 Sony International (Europe) Gmbh N-port direct receiver
US6128357A (en) 1997-12-24 2000-10-03 Mitsubishi Electric Information Technology Center America, Inc (Ita) Data receiver having variable rate symbol timing recovery with non-synchronized sampling
US5952834A (en) 1998-01-14 1999-09-14 Advanced Testing Technologies, Inc. Low noise signal synthesizer and phase noise measurement system
US5909454A (en) 1998-01-20 1999-06-01 General Instrument Corporation Intermediate rate applications of punctured convolutional codes for 8PSK trellis modulation over satellite channels
US6084919A (en) 1998-01-30 2000-07-04 Motorola, Inc. Communication unit having spectral adaptability
US6131013A (en) 1998-01-30 2000-10-10 Motorola, Inc. Method and apparatus for performing targeted interference suppression
US6219095B1 (en) * 1998-02-10 2001-04-17 Wavetek Corporation Noise measurement system
IL123739A (en) 1998-03-19 2001-11-25 Infineon Technologies Ag Method and equipment for restoring clock timing in XDSL modems and especially VDSL modems
US6141534A (en) 1998-03-25 2000-10-31 Spacecode Llc Communication satellite system with dynamic downlink resource allocation
US6313885B1 (en) 1998-03-25 2001-11-06 Samsung Electronics Co., Ltd. DTV receiver with baseband equalization filters for QAM signal and for VSB signal which employ common elements
US6192088B1 (en) 1998-03-31 2001-02-20 Lucent Technologies Inc. Carrier recovery system
US6433835B1 (en) 1998-04-17 2002-08-13 Encamera Sciences Corporation Expanded information capacity for existing communication transmission systems
US6657978B1 (en) 1998-04-23 2003-12-02 Transworld Communications (Usa), Inc. Optimized integrated high capacity digital satellite trunking network
US6535497B1 (en) * 1998-05-11 2003-03-18 Telefonaktiebolaget Lm Ericsson (Publ) Methods and systems for multiplexing of multiple users for enhanced capacity radiocommunications
JP2966396B1 (ja) 1998-05-22 1999-10-25 株式会社ケンウッド Ｂｓディジタル放送受信機
US6597750B1 (en) 1998-06-19 2003-07-22 Thomson Licensing S.A. Opposite polarization interference cancellation in satellite communication
US6426822B1 (en) 1998-06-25 2002-07-30 Ipicom, Inc. Method and apparatus for reducing non-linear characteristics of a signal modulator by coherent data collection
JP2000031944A (ja) 1998-07-07 2000-01-28 Matsushita Electric Ind Co Ltd 送信装置並びに受信装置及びデータ伝送方法
US6304594B1 (en) 1998-07-27 2001-10-16 General Dynamics Government Systems Corporation Interference detection and avoidance technique
US6452977B1 (en) 1998-09-15 2002-09-17 Ibiquity Digital Corporation Method and apparatus for AM compatible digital broadcasting
EP1033004A1 (de) 1998-09-18 2000-09-06 Hughes Electronics Corporation Raum-zeit-kode, -verfahren und -aufbauen für räumliche diversity bei psk konstellationen in mehrelement-antennensystemen
WO2000027066A2 (en) * 1998-11-03 2000-05-11 Broadcom Corporation Dual mode qam/vsb receiver
US6246717B1 (en) * 1998-11-03 2001-06-12 Tektronix, Inc. Measurement test set and method for in-service measurements of phase noise
US6404819B1 (en) 1998-11-20 2002-06-11 Lucent Technologies Inc. System and method for generating NRZ signals from RZ signals in communications networks
US6104747A (en) 1998-11-30 2000-08-15 Motorola, Inc. Method for determining optimum number of complex samples for coherent averaging in a communication system
US6320919B1 (en) 1998-11-30 2001-11-20 Ericsson Inc. Adaptive channel characterization using decoded symbols
US6335951B1 (en) * 1998-12-04 2002-01-01 Itt Manufacturing Enterprises, Inc. Programmable waveform generator for a global positioning system
US6515713B1 (en) * 1998-12-31 2003-02-04 Lg Electronics Inc. Method and apparatus which compensates for channel distortion
US6678520B1 (en) * 1999-01-07 2004-01-13 Hughes Electronics Corporation Method and apparatus for providing wideband services using medium and low earth orbit satellites
US6166601A (en) 1999-01-07 2000-12-26 Wiseband Communications Ltd. Super-linear multi-carrier power amplifier
TW559668B (en) 1999-02-08 2003-11-01 Advantest Corp Apparatus for and method of measuring a jitter
US6529715B1 (en) * 1999-02-26 2003-03-04 Lucent Technologies Inc. Amplifier architecture for multi-carrier wide-band communications
US6320464B1 (en) 1999-03-13 2001-11-20 Ntt Mobile Communications Network, Inc. Feedforward amplifier
JP2000278341A (ja) 1999-03-25 2000-10-06 Sanyo Electric Co Ltd 直交位相復調回路
US6369648B1 (en) * 1999-04-21 2002-04-09 Hughes Electronics Corporation Linear traveling wave tube amplifier utilizing input drive limiter for optimization
US6177836B1 (en) * 1999-05-07 2001-01-23 The Aerospace Corporation Feed forward linearized traveling wave tube
DE69926808T2 (de) 1999-06-18 2006-06-29 Ses Astra S.A. Verfahren und vorrichtung zur bestimmung der eigenschaften von komponenten eines kommunikationskanals
US6556639B1 (en) 1999-06-24 2003-04-29 Ibiquity Digital Corporation Method and apparatus for determining transmission mode and synchronization for a digital audio broadcasting signal
GB9915417D0 (en) 1999-07-02 1999-09-01 Nds Ltd Improvements in or relating to hierarchical coding
US6775521B1 (en) 1999-08-09 2004-08-10 Broadcom Corporation Bad frame indicator for radio telephone receivers
US6574235B1 (en) * 1999-08-12 2003-06-03 Ericsson Inc. Methods of receiving co-channel signals by channel separation and successive cancellation and related receivers
KR100314113B1 (ko) 1999-08-25 2001-11-15 구자홍 정합 필터 및 필터링방법, 이를 이용한 다매체 디지털 방송수신 장치
KR20010019997A (ko) 1999-08-31 2001-03-15 박종섭 아이엠티-2000 시스템에서의 광대역 씨디엠에이 신호용 채널 시뮬레이터
US6249180B1 (en) * 1999-09-08 2001-06-19 Atmel Corporation Phase noise and additive noise estimation in a QAM demodulator
US6560295B1 (en) 1999-09-15 2003-05-06 Hughes Electronics Corporation Method of generating space-time codes for generalized layered space-time architectures
US7161931B1 (en) * 1999-09-20 2007-01-09 Broadcom Corporation Voice and data exchange over a packet based network
US6535545B1 (en) 1999-10-15 2003-03-18 Rf Waves Ltd. RF modem utilizing saw resonator and correlator and communications transceiver constructed therefrom
US7073116B1 (en) 1999-11-23 2006-07-04 Thomson Licensing Error detection/correction coding for hierarchical QAM transmission systems
US7079585B1 (en) 1999-11-23 2006-07-18 Thomson Licensing Gray encoding for hierarchical QAM transmission systems
US6535801B1 (en) * 2000-01-28 2003-03-18 General Dynamics Decision Systems, Inc. Method and apparatus for accurately determining the position of satellites in geosynchronous orbits
JP2001223665A (ja) 2000-02-08 2001-08-17 Matsushita Electric Ind Co Ltd 信号符号化伝送装置、信号復号化受信装置、およびプログラム記録媒体
CA2302004A1 (en) 2000-03-22 2001-09-22 Vajira N. S. Samarasooriya Method and system for achieving carrier frequency synchronization in a high speed receiver
US6307435B1 (en) 2000-03-23 2001-10-23 The Aerospace Corporation High power amplifier linearization method using modified linear-log model predistortion
US6429740B1 (en) 2000-03-23 2002-08-06 The Aerospace Corporation High power amplifier linearization method using extended saleh model predistortion
US6741662B1 (en) * 2000-04-17 2004-05-25 Intel Corporation Transmitter linearization using fast predistortion
US7885314B1 (en) * 2000-05-02 2011-02-08 Kenneth Scott Walley Cancellation system and method for a wireless positioning system
US6377116B1 (en) * 2000-05-08 2002-04-23 Iowa State University Research Foundation, Inc. Pre-distorter and corresponding method for deriving same
JP3786343B2 (ja) 2000-05-12 2006-06-14 日本ビクター株式会社 光ディスク再生装置
US6956841B1 (en) 2000-05-24 2005-10-18 Nokia Networks Oy Receiver and method of receiving a desired signal
SE517030C2 (sv) 2000-06-06 2002-04-02 Ericsson Telefon Ab L M Metod och anordning för val av modulerings- och kodningsregler i ett radiokommunikationssystem
US6297691B1 (en) 2000-06-09 2001-10-02 Rosemount Inc. Method and apparatus for demodulating coherent and non-coherent modulated signals
JP2002009728A (ja) 2000-06-23 2002-01-11 Hitachi Kokusai Electric Inc 直交周波数分割多重変調伝送装置
US7154958B2 (en) 2000-07-05 2006-12-26 Texas Instruments Incorporated Code division multiple access wireless system with time reversed space time block transmitter diversity
US7149526B2 (en) * 2000-08-02 2006-12-12 Atc Technologies, Llc Coordinated satellite-terrestrial frequency reuse
US6522683B1 (en) * 2000-08-10 2003-02-18 Qualcomm, Incorporated Method and apparatus for adaptive linear equalization for walsh covered modulation
DE10043743A1 (de) 2000-09-05 2002-03-14 Infineon Technologies Ag Automatische Frequenzkorrektur für Mobilfunkempfänger
US6718184B1 (en) 2000-09-28 2004-04-06 Lucent Technologies Inc. Method and system for adaptive signal processing for an antenna array
JP3602047B2 (ja) 2000-10-05 2004-12-15 シャープ株式会社 階層化伝送デジタル信号復調装置
US6745050B1 (en) * 2000-10-23 2004-06-01 Massachusetts Institute Of Technology Multichannel multiuser detection
US7190683B2 (en) * 2000-10-27 2007-03-13 L-3 Communications Corporation Two-dimensional channel bonding in a hybrid CDMA/FDMA fixed wireless access system to provide finely variable rate channels
US7042956B2 (en) 2000-11-06 2006-05-09 Hesham El-Gamal Method and system for utilizing space-time codes for block fading channels
EP1341331A4 (de) 2000-12-04 2006-08-30 Fujitsu Ltd Zeitentzerrungsverfahren und -einrichtung
US6567762B2 (en) * 2000-12-22 2003-05-20 Agilent Technologies, Inc. Dynamic range extension apparatus and method
US6731700B1 (en) * 2001-01-04 2004-05-04 Comsys Communication & Signal Processing Ltd. Soft decision output generator
JP3545726B2 (ja) * 2001-02-27 2004-07-21 松下電器産業株式会社 受信側装置
US20030002471A1 (en) * 2001-03-06 2003-01-02 Crawford James A. Method for estimating carrier-to-noise-plus-interference ratio (CNIR) for OFDM waveforms and the use thereof for diversity antenna branch selection
US6922439B2 (en) 2001-03-16 2005-07-26 Advantest Corporation Apparatus for and method of measuring jitter
US7778365B2 (en) 2001-04-27 2010-08-17 The Directv Group, Inc. Satellite TWTA on-line non-linearity measurement
GB2375016B (en) 2001-04-27 2005-03-16 Tandberg Television Asa Satellite up-link fade compensation
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
US7471735B2 (en) * 2001-04-27 2008-12-30 The Directv Group, Inc. Maximizing power and spectral efficiencies for layered and conventional modulations
US7173981B1 (en) 2001-04-27 2007-02-06 The Directv Group, Inc. Dual layer signal processing in a layered modulation digital signal system
US7453933B2 (en) 2001-05-04 2008-11-18 Lucent Technologies Inc. Method of estimating a signal-to-interference+noise ratio (SINR) using data samples
US7046739B2 (en) 2001-05-18 2006-05-16 Southwest Research Institute Pre-distortion of input signals to form constant envelope signal outputs
US7106792B2 (en) 2001-06-04 2006-09-12 Qualcomm, Inc. Method and apparatus for estimating the signal to interference-plus-noise ratio of a wireless channel
US6956924B2 (en) 2001-08-14 2005-10-18 Northrop Grumman Corporation Efficient implementation of a decision directed phase locked loop (DD-PLL) for use with short block code in digital communication systems
US7239876B2 (en) * 2001-09-06 2007-07-03 Motorola, Inc. Method for increased location receiver sensitivity
US7039122B2 (en) * 2001-10-17 2006-05-02 Itt Manufacturing Enterprises, Inc. Method and apparatus for generating a composite signal
US6700442B2 (en) * 2001-11-20 2004-03-02 Thomas Quang Ha N way phase cancellation power amplifier
US7263119B1 (en) 2001-11-29 2007-08-28 Marvell International Ltd. Decoding method and apparatus
ES2282528T3 (es) 2002-02-05 2007-10-16 Hughes Electronics Corporation Preprocesamiento de las señales superpuestas en un esquema de transmision digital de modulacion estratificada para utilizar receptores legados.
US7065153B2 (en) 2002-02-06 2006-06-20 The Boeing Company High speed monolithic microwave integrated circuit (MMIC) quadrature phase shift keying (QPSK) and quadrature amplitude modulation (QAM) modulators
KR20030076259A (ko) * 2002-03-19 2003-09-26 술저 헥시스 악티엔게젤샤프트 열교환기 일체형 연료 전지 배터리
US7197084B2 (en) 2002-03-27 2007-03-27 Qualcomm Incorporated Precoding for a multipath channel in a MIMO system
US6809587B2 (en) 2002-04-23 2004-10-26 Mitec Telecom Inc. Active predistorting linearizer with agile bypass circuit for safe mode operation
US7274876B2 (en) 2002-06-06 2007-09-25 At&T Corp. Integrated electrical/optical hybrid communication system with revertive hitless switch
US20070121718A1 (en) 2002-06-06 2007-05-31 Chin-Liang Wang System and Method for Time-Domain Equalization in Discrete Multi-tone Systems
TWI324463B (en) * 2002-07-01 2010-05-01 Hughes Electronics Corp Improving hierarchical 8psk performance
US6885708B2 (en) 2002-07-18 2005-04-26 Motorola, Inc. Training prefix modulation method and receiver
US8229003B2 (en) 2002-09-06 2012-07-24 Koninklijke Philips Electronics N.V. Parameter encoding for an improved ATSC DTV system
ATE540511T1 (de) 2002-10-25 2012-01-15 Directv Group Inc Maximierung von leistungs- und spektraleffizienzen für geschichtete und herkömmliche modulationen
US7529312B2 (en) 2002-10-25 2009-05-05 The Directv Group, Inc. Layered modulation for terrestrial ATSC applications
ATE461553T1 (de) 2002-10-25 2010-04-15 Directv Group Inc Schätzen des arbeitspunkts eines nichtlinearenausbreitungswellenrührenverstärker
US7548598B2 (en) 2003-04-07 2009-06-16 Harris Corporation Method and apparatus for iteratively improving the performance of coded and interleaved communication systems
US6999510B2 (en) * 2003-04-18 2006-02-14 Optichron, Inc. Nonlinear inversion
US7230992B2 (en) * 2003-11-26 2007-06-12 Delphi Technologies, Inc. Method to create hierarchical modulation in OFDM

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US7822154B2 (en) 2010-10-26
CA2495855C (en) 2010-11-23
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