GB2450428A - Approximate linear FM synchronization symbols for a bandwidth configurable OFDM modem - Google Patents

Approximate linear FM synchronization symbols for a bandwidth configurable OFDM modem Download PDF

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Publication number
GB2450428A
GB2450428A GB0814956A GB0814956A GB2450428A GB 2450428 A GB2450428 A GB 2450428A GB 0814956 A GB0814956 A GB 0814956A GB 0814956 A GB0814956 A GB 0814956A GB 2450428 A GB2450428 A GB 2450428A
Authority
GB
United Kingdom
Prior art keywords
bandwidth
synchronization symbols
approximate linear
ofdm modem
configurable ofdm
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
GB0814956A
Other versions
GB2450428B (en
GB0814956D0 (en
Inventor
John Fanson
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.)
Edgewater Computer Systems Inc
Original Assignee
Edgewater Computer Systems 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
Priority claimed from US11/332,395 external-priority patent/US7830998B2/en
Priority claimed from CA2533070A external-priority patent/CA2533070C/en
Application filed by Edgewater Computer Systems Inc filed Critical Edgewater Computer Systems Inc
Publication of GB0814956D0 publication Critical patent/GB0814956D0/en
Publication of GB2450428A publication Critical patent/GB2450428A/en
Application granted granted Critical
Publication of GB2450428B publication Critical patent/GB2450428B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2656—Frame synchronisation, e.g. packet synchronisation, time division duplex [TDD] switching point detection or subframe synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2662—Symbol synchronisation

Landscapes

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

Abstract

A communications system permits bandwidth configurability using a linear frequency modulated (LFM) waveform for transmitter/receiver synchronization. The system permits enhancement of MIL-STD-1553 data buses, and is likewise applicable to any bandwidth-configurable modem.
GB0814956A 2006-01-17 2007-01-17 Approximate linear FM synchronization symbols for a bandwidth configurable OFDM modem Active GB2450428B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US11/332,395 US7830998B2 (en) 2006-01-17 2006-01-17 Approximate linear FM synchronization symbols for a bandwidth configurable OFDM modem
CA2533070A CA2533070C (en) 2006-01-17 2006-01-17 Approximate linear fm synchronization symbols for a bandwidth configurable ofdm modem
PCT/CA2007/000064 WO2007082372A1 (en) 2006-01-17 2007-01-17 Approximate linear fm synchronization symbols for a bandwidth configurable ofdm modem

Publications (3)

Publication Number Publication Date
GB0814956D0 GB0814956D0 (en) 2008-09-24
GB2450428A true GB2450428A (en) 2008-12-24
GB2450428B GB2450428B (en) 2011-02-09

Family

ID=38287211

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0814956A Active GB2450428B (en) 2006-01-17 2007-01-17 Approximate linear FM synchronization symbols for a bandwidth configurable OFDM modem

Country Status (3)

Country Link
AU (1) AU2007207287A1 (en)
GB (1) GB2450428B (en)
WO (1) WO2007082372A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SI2090050T2 (en) 2007-05-02 2017-10-30 Huawei Technologies Co., Ltd. Method and apparatus of establishing a synchronisation signal in a communication system
US8306136B2 (en) * 2009-10-22 2012-11-06 Thales Canada Inc. Communications system utilizing orthogonal linear frequency modulated waveforms
CN104333431B (en) * 2014-11-08 2017-02-15 浙江大学 FM (Frequency Modulation) broadcast based low power consumption high accuracy network time synchronous circuit
KR102064657B1 (en) 2018-01-05 2020-01-09 중앙대학교 산학협력단 Method and apparatus for random access preamble generation

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1278323A1 (en) * 2000-09-07 2003-01-22 Sony Corporation Ofdm modem system
WO2004109475A2 (en) * 2003-06-05 2004-12-16 Meshnetworks, Inc. System and method for determining synchronization point in ofdm modems for accurate time of flight measurement

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1278323A1 (en) * 2000-09-07 2003-01-22 Sony Corporation Ofdm modem system
WO2004109475A2 (en) * 2003-06-05 2004-12-16 Meshnetworks, Inc. System and method for determining synchronization point in ofdm modems for accurate time of flight measurement

Also Published As

Publication number Publication date
WO2007082372A1 (en) 2007-07-26
AU2007207287A1 (en) 2007-07-26
GB2450428B (en) 2011-02-09
GB0814956D0 (en) 2008-09-24

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