GB2364868B - Sub-carrier-frequency signal demodulating apparatus - Google Patents

Sub-carrier-frequency signal demodulating apparatus

Info

Publication number
GB2364868B
GB2364868B GB0102820A GB0102820A GB2364868B GB 2364868 B GB2364868 B GB 2364868B GB 0102820 A GB0102820 A GB 0102820A GB 0102820 A GB0102820 A GB 0102820A GB 2364868 B GB2364868 B GB 2364868B
Authority
GB
United Kingdom
Prior art keywords
sub
carrier
frequency signal
signal demodulating
demodulating apparatus
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 - Fee Related
Application number
GB0102820A
Other versions
GB0102820D0 (en
GB2364868A (en
Inventor
Takashi Fujiwara
Jun Ido
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of GB0102820D0 publication Critical patent/GB0102820D0/en
Publication of GB2364868A publication Critical patent/GB2364868A/en
Application granted granted Critical
Publication of GB2364868B publication Critical patent/GB2364868B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2657—Carrier 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
    • H04L27/2668—Details of algorithms
    • H04L27/2673—Details of algorithms characterised by synchronisation parameters
    • H04L27/2676—Blind, i.e. without using known symbols
    • H04L27/2678—Blind, i.e. without using known symbols using cyclostationarities, e.g. cyclic prefix or postfix
    • 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
    • H04L2027/0059—Closed loops more than two phases
    • 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
    • H04L2027/0063—Elements of loops
    • H04L2027/0067—Phase error detectors
    • 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
    • H04L2027/0071—Control of loops
    • H04L2027/0075—Error weighting

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
GB0102820A 2000-02-28 2001-02-05 Sub-carrier-frequency signal demodulating apparatus Expired - Fee Related GB2364868B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000050437A JP3789275B2 (en) 2000-02-28 2000-02-28 Subcarrier frequency signal demodulator

Publications (3)

Publication Number Publication Date
GB0102820D0 GB0102820D0 (en) 2001-03-21
GB2364868A GB2364868A (en) 2002-02-06
GB2364868B true GB2364868B (en) 2003-12-24

Family

ID=18572223

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0102820A Expired - Fee Related GB2364868B (en) 2000-02-28 2001-02-05 Sub-carrier-frequency signal demodulating apparatus

Country Status (3)

Country Link
JP (1) JP3789275B2 (en)
CN (1) CN1193524C (en)
GB (1) GB2364868B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3939165B2 (en) * 2002-02-20 2007-07-04 三洋電機株式会社 Wireless device, wireless communication system, space path control method, and space path control program
JP3538187B2 (en) 2002-03-26 2004-06-14 株式会社東芝 OFDM receiver and data demodulation method in OFDM receiver
KR100601939B1 (en) * 2004-01-16 2006-07-14 삼성전자주식회사 Coarse frequency synchronization method and apparatus in OFDM system
US8189117B2 (en) * 2005-07-29 2012-05-29 Nxp B.V. Receiver for amplitude-modulated signals
CN101243634B (en) * 2005-08-26 2012-07-25 夏普株式会社 Communication control apparatus, communication terminal apparatus, wireless communication system, and transmitting method
JP2007124416A (en) * 2005-10-28 2007-05-17 Sharp Corp Ofdm demodulating device, ofdm demodulation program, and record medium
US8270545B2 (en) * 2009-03-01 2012-09-18 Qualcomm Incorporated Methods and systems using fine frequency tracking loop design for WiMAX
TW201145918A (en) * 2009-12-27 2011-12-16 Maxlinear Inc Methods and apparatus for synchronization in multiple-channel communication systems
CN102629869B (en) * 2012-04-18 2015-08-26 北京理工大学 Based on the digital delay locked loop of Kalman filtering and least-squares algorithm
CN107329052B (en) * 2017-05-24 2019-12-27 国网辽宁省电力有限公司电力科学研究院 Discharge electromagnetic wave time delay value estimation method based on analog signal

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2307155A (en) * 1995-11-02 1997-05-14 British Broadcasting Corp Synchronisation of OFDM signals
GB2325825A (en) * 1997-05-02 1998-12-02 British Broadcasting Corp Improvements to OFDM symbol synchronisation
EP0896457A1 (en) * 1997-08-05 1999-02-10 Industrial Technology Research Institute Symbol synchronization for MCM signals with guard interval
EP0955754A1 (en) * 1998-05-07 1999-11-10 NOKIA TECHNOLOGY GmbH Method and apparatus for achieving and maintaining symbol synchronization in an OFDM transmission system
GB2353681A (en) * 1999-08-27 2001-02-28 Mitsubishi Electric Inf Tech OFDM symbol synchronisation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2307155A (en) * 1995-11-02 1997-05-14 British Broadcasting Corp Synchronisation of OFDM signals
GB2325825A (en) * 1997-05-02 1998-12-02 British Broadcasting Corp Improvements to OFDM symbol synchronisation
EP0896457A1 (en) * 1997-08-05 1999-02-10 Industrial Technology Research Institute Symbol synchronization for MCM signals with guard interval
EP0955754A1 (en) * 1998-05-07 1999-11-10 NOKIA TECHNOLOGY GmbH Method and apparatus for achieving and maintaining symbol synchronization in an OFDM transmission system
GB2353681A (en) * 1999-08-27 2001-02-28 Mitsubishi Electric Inf Tech OFDM symbol synchronisation

Also Published As

Publication number Publication date
JP2001244910A (en) 2001-09-07
GB0102820D0 (en) 2001-03-21
JP3789275B2 (en) 2006-06-21
CN1193524C (en) 2005-03-16
GB2364868A (en) 2002-02-06
CN1311575A (en) 2001-09-05

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Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)

Effective date: 20110513

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20140205