GB2425024B - Transmission signals methods and apparatus - Google Patents

Transmission signals methods and apparatus

Info

Publication number
GB2425024B
GB2425024B GB0506992A GB0506992A GB2425024B GB 2425024 B GB2425024 B GB 2425024B GB 0506992 A GB0506992 A GB 0506992A GB 0506992 A GB0506992 A GB 0506992A GB 2425024 B GB2425024 B GB 2425024B
Authority
GB
United Kingdom
Prior art keywords
transmission signals
methods
signals methods
transmission
signals
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
GB0506992A
Other versions
GB0506992D0 (en
GB2425024A (en
Inventor
Justin Coon
Magnus Sandell
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.)
Toshiba Europe Ltd
Original Assignee
Toshiba Research Europe Ltd
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 Toshiba Research Europe Ltd filed Critical Toshiba Research Europe Ltd
Priority to GB0506992A priority Critical patent/GB2425024B/en
Publication of GB0506992D0 publication Critical patent/GB0506992D0/en
Publication of GB2425024A publication Critical patent/GB2425024A/en
Application granted granted Critical
Publication of GB2425024B publication Critical patent/GB2425024B/en
Expired - Fee Related 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
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding 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
    • H04L27/2602—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
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • 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
    • H04L27/26134—Pilot insertion in the transmitter chain, e.g. pilot overlapping with data, insertion in time or frequency domain
    • 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
    • H04L27/2614—Peak power aspects

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Radio Transmission System (AREA)
GB0506992A 2005-04-06 2005-04-06 Transmission signals methods and apparatus Expired - Fee Related GB2425024B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0506992A GB2425024B (en) 2005-04-06 2005-04-06 Transmission signals methods and apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0506992A GB2425024B (en) 2005-04-06 2005-04-06 Transmission signals methods and apparatus

Publications (3)

Publication Number Publication Date
GB0506992D0 GB0506992D0 (en) 2005-05-11
GB2425024A GB2425024A (en) 2006-10-11
GB2425024B true GB2425024B (en) 2007-05-30

Family

ID=34586806

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0506992A Expired - Fee Related GB2425024B (en) 2005-04-06 2005-04-06 Transmission signals methods and apparatus

Country Status (1)

Country Link
GB (1) GB2425024B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2151107B1 (en) * 2007-05-09 2018-03-21 Telefonaktiebolaget LM Ericsson (publ) Receiver for a radio network and an method for determining a channel estimate for a radio channel
WO2009028729A2 (en) * 2007-08-31 2009-03-05 Panasonic Corporation Communication apparatus and method
CN101197796B (en) * 2007-10-23 2010-11-03 中国科学院嘉兴无线传感网工程中心 Wireless sensor network channel evaluation method based on SC-FDE and virtual multi-antenna
ES2381694T3 (en) 2008-08-18 2012-05-30 Research In Motion Limited Systems and methods for selection, transmission and reception of training sequences
US8331488B2 (en) 2009-10-13 2012-12-11 Qualcomm Incorporated Methods and apparatus for communicating information using non-coherent and coherent modulation
US8325697B2 (en) 2009-10-13 2012-12-04 Qualcomm Incorporated Methods and apparatus for selecting and transmitting pilots
US8995539B2 (en) * 2010-07-13 2015-03-31 Qualcomm Incorporated Methods and apparatus for selecting and using communications resources in a communication system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6408022B1 (en) * 1998-03-27 2002-06-18 Telefonaktiebolaget L M Ericsson Equalizer for use in multi-carrier modulation systems
EP1414177A1 (en) * 2002-09-26 2004-04-28 Kabushiki Kaisha Toshiba Channel estimation for OFDM using orthogonal training sequences

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6408022B1 (en) * 1998-03-27 2002-06-18 Telefonaktiebolaget L M Ericsson Equalizer for use in multi-carrier modulation systems
EP1414177A1 (en) * 2002-09-26 2004-04-28 Kabushiki Kaisha Toshiba Channel estimation for OFDM using orthogonal training sequences

Also Published As

Publication number Publication date
GB0506992D0 (en) 2005-05-11
GB2425024A (en) 2006-10-11

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20140406