WO1992008307A3 - Demodulateur ''a posteriori'' maximum optimal - Google Patents

Demodulateur ''a posteriori'' maximum optimal Download PDF

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Publication number
WO1992008307A3
WO1992008307A3 PCT/US1991/007819 US9107819W WO9208307A3 WO 1992008307 A3 WO1992008307 A3 WO 1992008307A3 US 9107819 W US9107819 W US 9107819W WO 9208307 A3 WO9208307 A3 WO 9208307A3
Authority
WO
WIPO (PCT)
Prior art keywords
amplifier
maximum
probability estimation
posteriori probability
inputs
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.)
Ceased
Application number
PCT/US1991/007819
Other languages
English (en)
Other versions
WO1992008307A2 (fr
Inventor
Richard A Altes
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.)
Chirp Corp
Original Assignee
Chirp 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
Application filed by Chirp Corp filed Critical Chirp Corp
Priority to JP3518497A priority Critical patent/JPH06502519A/ja
Publication of WO1992008307A2 publication Critical patent/WO1992008307A2/fr
Publication of WO1992008307A3 publication Critical patent/WO1992008307A3/fr
Anticipated expiration legal-status Critical
Ceased 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
    • H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
    • H04L27/2338—Demodulator circuits; Receiver circuits using non-coherent demodulation using sampling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/14—Demodulator circuits; Receiver circuits
    • H04L27/156—Demodulator circuits; Receiver circuits with demodulation using temporal properties of the received signal, e.g. detecting pulse width
    • H04L27/1566—Demodulator circuits; Receiver circuits with demodulation using temporal properties of the received signal, e.g. detecting pulse width using synchronous sampling
    • 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
    • H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
    • H04L27/2332—Demodulator circuits; Receiver circuits using non-coherent demodulation using a non-coherent carrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0024—Carrier regulation at the receiver end
    • H04L2027/0026—Correction of carrier offset
    • H04L2027/003—Correction of carrier offset at baseband only
    • 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
    • H04L2027/0055—Closed loops single phase

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

Système et procédé de démodulation d'angle comprenant un réseau pourvu d'un ensemble d'amplificateurs, chaque amplificateur présentant un ensemble d'entrées, une polarisation b et une sortie où un ensemble de lignes de réaction sont reliées entre un ensemble sélectionné de sorties d'amplificateur et un ensemble sélectionné d'entrées d'amplificateur, et un organe de traitement de blocs qui règle de manière itérative chaque polarisation de l'amplificateur en fonction de la différence entre une estimation de phase moyenne prédite Υm(jΘ) et une phase mesurée α(jΘ) à un instant jΘ, où 1 « j « K pour un bloc de données d'échantillon K et Θ est une période d'échantillonnage des données de signaux y(jΘ).
PCT/US1991/007819 1990-11-01 1991-10-23 Demodulateur ''a posteriori'' maximum optimal Ceased WO1992008307A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3518497A JPH06502519A (ja) 1990-11-01 1991-10-23 最大事後確率推定を用いた最適復調器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US607,582 1990-11-01
US07/607,582 US5303269A (en) 1990-11-01 1990-11-01 Optically maximum A posteriori demodulator

Publications (2)

Publication Number Publication Date
WO1992008307A2 WO1992008307A2 (fr) 1992-05-14
WO1992008307A3 true WO1992008307A3 (fr) 1992-07-09

Family

ID=24432900

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1991/007819 Ceased WO1992008307A2 (fr) 1990-11-01 1991-10-23 Demodulateur ''a posteriori'' maximum optimal

Country Status (5)

Country Link
US (3) US5303269A (fr)
EP (1) EP0555348A1 (fr)
JP (1) JPH06502519A (fr)
CA (1) CA2094612A1 (fr)
WO (1) WO1992008307A2 (fr)

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US5703908A (en) * 1993-10-08 1997-12-30 Rutgers University Fixed reference shift keying modulation for mobile radio telecommunications
GB9417170D0 (en) * 1994-08-25 1994-10-12 Isis Innovation Non-linear filtering
US5642243A (en) * 1994-09-27 1997-06-24 Cirrus Logic, Inc. Timing recovery frequency error detector for sampled amplitude magnetic recording
US5960044A (en) * 1996-11-14 1999-09-28 Scientific-Atlanta, Inc. Apparatus and method for block phase estimation
KR100199015B1 (ko) * 1996-11-25 1999-06-15 정선종 확장형 칼만 필터를 사용한 fm 복조장치
US6178316B1 (en) * 1997-04-29 2001-01-23 Meta-C Corporation Radio frequency modulation employing a periodic transformation system
US6351503B1 (en) * 1997-09-12 2002-02-26 Stanford Telecommunications, Inc. Threshold extension block phase estimator for quasi-coherent communications systems
US6104767A (en) * 1997-11-17 2000-08-15 Telefonaktiebolaget Lm Ericsson Method and apparatus for estimating a frequency offset
JP4169393B2 (ja) * 1998-06-16 2008-10-22 アイコム株式会社 角度復調器
KR100300306B1 (ko) 1999-05-28 2001-09-26 윤종용 무선통신 시스템에서 채널 적응형 맵 채널 복호 장치 및 방법
US6400290B1 (en) * 1999-11-29 2002-06-04 Altera Corporation Normalization implementation for a logmap decoder
US6510015B2 (en) 1999-12-10 2003-01-21 Seagate Technology Llc Magnetic disc having physical servo patterns with a magnetic carrier, and method of making and using the same
GB2360179A (en) * 2000-03-07 2001-09-12 Ericsson Telefon Ab L M Receiver with an 'a posteriori' estimator to determine the position of a synchronisation sequence
US6938024B1 (en) * 2000-05-04 2005-08-30 Microsoft Corporation Transmitting information given constrained resources
US7130292B2 (en) * 2000-06-02 2006-10-31 Essex Corporation Optical processor enhanced receiver architecture (opera)
US7388934B2 (en) * 2000-06-27 2008-06-17 Koninklijke Philips Electronics N.V. Detection and correction of phase jumps in a phase sequence
KR100377969B1 (ko) * 2000-07-10 2003-03-29 이용환 적응 채널 추정 장치를 이용한 직접시퀀스 확산대역시스템 수신 장치
US6515272B1 (en) 2000-09-29 2003-02-04 Advanced Micro Devices, Inc. Method and apparatus for improving signal to noise ratio of an aerial image monitor
US6466614B1 (en) 2001-03-22 2002-10-15 Motorola, Inc. Method and apparatus for classifying a baseband signal
US6675126B2 (en) * 2001-03-27 2004-01-06 Kabushiki Kaisha Toyota Chuo Kenkyusho Method, computer program, and storage medium for estimating randomness of function of representative value of random variable by the use of gradient of same function
US6906305B2 (en) * 2002-01-08 2005-06-14 Brion Technologies, Inc. System and method for aerial image sensing
US6828542B2 (en) * 2002-06-07 2004-12-07 Brion Technologies, Inc. System and method for lithography process monitoring and control
US7190741B1 (en) * 2002-10-21 2007-03-13 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Real-time signal-to-noise ratio (SNR) estimation for BPSK and QPSK modulation using the active communications channel
US6807503B2 (en) * 2002-11-04 2004-10-19 Brion Technologies, Inc. Method and apparatus for monitoring integrated circuit fabrication
US7336750B1 (en) 2002-11-22 2008-02-26 Marvell International Ltd. Optimal one-shot phase and frequency estimation for timing acquisition
US6759297B1 (en) 2003-02-28 2004-07-06 Union Semiconductor Technology Corporatin Low temperature deposition of dielectric materials in magnetoresistive random access memory devices
US7215705B2 (en) * 2003-03-17 2007-05-08 Intel Corporation Reducing phase noise in phase-encoded communications signals
US7053355B2 (en) 2003-03-18 2006-05-30 Brion Technologies, Inc. System and method for lithography process monitoring and control
KR100760998B1 (ko) * 2006-09-29 2007-09-21 한국전자통신연구원 최대 경사 알고리즘을 이용한 양자화 전처리기 코드북최적화 방법 및 장치
DE102018130457B4 (de) * 2018-11-30 2021-03-25 Bayerische Motoren Werke Aktiengesellschaft System und Verfahren für Map Matching

Citations (3)

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US4656648A (en) * 1983-05-09 1987-04-07 Robert Vallet Process for the noncoherent demodulation of a digital signal
US4660166A (en) * 1985-01-22 1987-04-21 Bell Telephone Laboratories, Incorporated Electronic network for collective decision based on large number of connections between signals
US4885757A (en) * 1987-06-01 1989-12-05 Texas Instruments Incorporated Digital adaptive receiver employing maximum-likelihood sequence estimation with neural networks

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Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
US4656648A (en) * 1983-05-09 1987-04-07 Robert Vallet Process for the noncoherent demodulation of a digital signal
US4660166A (en) * 1985-01-22 1987-04-21 Bell Telephone Laboratories, Incorporated Electronic network for collective decision based on large number of connections between signals
US4885757A (en) * 1987-06-01 1989-12-05 Texas Instruments Incorporated Digital adaptive receiver employing maximum-likelihood sequence estimation with neural networks

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Also Published As

Publication number Publication date
CA2094612A1 (fr) 1992-05-02
US5303269A (en) 1994-04-12
US5491724A (en) 1996-02-13
EP0555348A1 (fr) 1993-08-18
WO1992008307A2 (fr) 1992-05-14
US5619537A (en) 1997-04-08
JPH06502519A (ja) 1994-03-17

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