CA2133223A1 - Apparatus for transmission path delay measurements using adap tive demodulation - Google Patents

Apparatus for transmission path delay measurements using adap tive demodulation

Info

Publication number
CA2133223A1
CA2133223A1 CA2133223A CA2133223A CA2133223A1 CA 2133223 A1 CA2133223 A1 CA 2133223A1 CA 2133223 A CA2133223 A CA 2133223A CA 2133223 A CA2133223 A CA 2133223A CA 2133223 A1 CA2133223 A1 CA 2133223A1
Authority
CA
Canada
Prior art keywords
demodulation
signal
received
transmission path
path delay
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.)
Granted
Application number
CA2133223A
Other languages
French (fr)
Other versions
CA2133223C (en
Inventor
Paul R. Christian
Casimier Karczewski
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.)
Motorola Solutions Inc
Original Assignee
Paul R. Christian
Casimier Karczewski
Motorola, 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 Paul R. Christian, Casimier Karczewski, Motorola, Inc. filed Critical Paul R. Christian
Publication of CA2133223A1 publication Critical patent/CA2133223A1/en
Application granted granted Critical
Publication of CA2133223C publication Critical patent/CA2133223C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65—Arrangements characterised by transmission systems for broadcast
    • H04H20/67—Common-wave systems, i.e. using separate transmitters operating on substantially the same frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0682—Clock or time synchronisation in a network by delay compensation, e.g. by compensation of propagation delay or variations thereof, by ranging
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
    • H04L2007/047—Speed or phase control by synchronisation signals using special codes as synchronising signal using a sine signal or unmodulated carrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
    • H04L7/046—Speed or phase control by synchronisation signals using special codes as synchronising signal using a dotting sequence

Abstract

A simulcast transmission system (100) utilizes adaptive demodulation to provide an apparatus for automatic delay equalization measurements. The simulcast transmission system (100) comprises a control station (101), and a plurality of remote stations (201, 301) capable of re-transmitting a received delay equalization measurement signal which includes at least a correction bit pattern signal followed by a synchronization pattern signal. A receiver (151, 191) receives the re-transmitted delay equalization measurement signal, correlates the received signal to obtain a coarse time of reception, and analyzes the received correction bit pattern signal to derive a fine reception time correction factor.
CA002133223A 1993-01-29 1994-01-18 Apparatus for transmission path delay measurements using adap tive demodulation Expired - Fee Related CA2133223C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/010,910 US5361398A (en) 1993-01-29 1993-01-29 Method and apparatus for transmission path delay measurements using adaptive demodulation
US08/010,910 1993-01-29
PCT/US1994/000694 WO1994017604A1 (en) 1993-01-29 1994-01-18 Method and apparatus for transmission path delay measurements using adaptive demodulation

Publications (2)

Publication Number Publication Date
CA2133223A1 true CA2133223A1 (en) 1994-08-04
CA2133223C CA2133223C (en) 1999-09-21

Family

ID=21747985

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002133223A Expired - Fee Related CA2133223C (en) 1993-01-29 1994-01-18 Apparatus for transmission path delay measurements using adap tive demodulation

Country Status (9)

Country Link
US (1) US5361398A (en)
EP (1) EP0664938A4 (en)
JP (1) JP2821715B2 (en)
KR (2) KR960016644B1 (en)
CN (1) CN1045144C (en)
AU (1) AU663442B2 (en)
CA (1) CA2133223C (en)
RU (1) RU2115242C1 (en)
WO (1) WO1994017604A1 (en)

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US5873044A (en) * 1997-02-21 1999-02-16 Motorola, Inc. Method and apparatus in a radio communication system for synchronizing transmissions while maintaining full user traffic
US6061574A (en) * 1997-10-28 2000-05-09 Motorola, Inc. Method and apparatus in a wireless communication system for reducing errors caused by intersymbol interference during a simulcast transmission
US6137842A (en) * 1997-11-28 2000-10-24 The United States Of America As Represented By The Secretary Of The Navy System and method for determining the time difference of arrival of a frequency shift keyed signal at two separate receivers
JPH11261617A (en) * 1998-03-09 1999-09-24 Fujitsu Ltd Optical subscriber network and delay mesurement method therefor
US6289224B1 (en) * 1998-10-29 2001-09-11 Motorola, Inc. Method and apparatus for starting an acknowledgment timer
US7089000B1 (en) * 1999-03-18 2006-08-08 The Directv Group, Inc. Multi-node wireless communication system with multiple transponding platforms
US6337980B1 (en) * 1999-03-18 2002-01-08 Hughes Electronics Corporation Multiple satellite mobile communications method and apparatus for hand-held terminals
US7319686B1 (en) * 1999-03-18 2008-01-15 Industrial Technology Research Institute Frame synchronization in multi-cell systems with a data interface
DE19913075A1 (en) * 1999-03-23 2000-10-26 Fraunhofer Ges Forschung Method and device for determining the time-based occurrence of an information word in a coded signal and method and device for determining the transit time of a coded signal from a transmitter to a receiver
US6963548B1 (en) * 2000-04-17 2005-11-08 The Directv Group, Inc. Coherent synchronization of code division multiple access signals
US6590524B1 (en) * 2000-05-10 2003-07-08 Rockwell Collins, Inc. Method and means for precise time synchronization
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US7809403B2 (en) 2001-01-19 2010-10-05 The Directv Group, Inc. Stratospheric platforms communication system using adaptive antennas
US7187949B2 (en) 2001-01-19 2007-03-06 The Directv Group, Inc. Multiple basestation communication system having adaptive antennas
US6920402B1 (en) 2001-03-07 2005-07-19 Rambus Inc. Technique for determining performance characteristics of electronic devices and systems
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US6775809B1 (en) * 2002-03-14 2004-08-10 Rambus Inc. Technique for determining performance characteristics of electronic systems
WO2003084080A2 (en) * 2002-03-27 2003-10-09 Meshnetworks, Inc. System and method for signal time alignment using programmable matched filter coefficients
US7161921B2 (en) * 2003-04-04 2007-01-09 Motorola, Inc. Relative adjustment value for inbound time-slotted transmissions
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JP4915171B2 (en) * 2006-08-11 2012-04-11 富士通株式会社 Communication terminal device and communication method
WO2009076097A1 (en) * 2007-12-06 2009-06-18 Rambus Inc. Edge-based loss-of-signal detection
JP5139948B2 (en) 2008-10-06 2013-02-06 ルネサスエレクトロニクス株式会社 Data communication apparatus, pneumatic pressure monitoring system using the same, and data communication method
CN101860803A (en) * 2010-06-12 2010-10-13 珠海无线蜂网科技有限公司 Broadcast/television signal transmission method, transmission center, base station and system
CN103262580B (en) * 2010-10-14 2017-11-03 Gn瑞声达A/S The method of difference on the frequency between hearing device and compensation transmitter and receiver
CN103380595B (en) 2011-02-21 2016-09-07 三菱电机株式会社 Communicator and communication means
CN107078869B (en) * 2014-10-24 2020-12-04 瑞典爱立信有限公司 Method for synchronization signal transmission, and associated node
JP7287897B2 (en) * 2017-03-22 2023-06-06 アイディーエーシー ホールディングス インコーポレイテッド Methods, apparatus, systems, architectures and interfaces for channel state information reference signals for next generation wireless communication systems
KR102580505B1 (en) * 2018-09-17 2023-09-21 삼성전자주식회사 Display apparatus, method for controlling thereof and recording media thereof
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Also Published As

Publication number Publication date
EP0664938A4 (en) 1999-12-01
CN1097534A (en) 1995-01-18
RU2115242C1 (en) 1998-07-10
JPH07504796A (en) 1995-05-25
EP0664938A1 (en) 1995-08-02
WO1994017604A1 (en) 1994-08-04
CA2133223C (en) 1999-09-21
AU6091794A (en) 1994-08-15
KR950701166A (en) 1995-02-20
KR960016644B1 (en) 1996-12-19
AU663442B2 (en) 1995-10-05
CN1045144C (en) 1999-09-15
JP2821715B2 (en) 1998-11-05
US5361398A (en) 1994-11-01

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