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SE9600537L - Förfarande och anordning i ett OFDM system med variabel varaktighet av symbolskur - Google Patents

Förfarande och anordning i ett OFDM system med variabel varaktighet av symbolskur

Info

Publication number
SE9600537L
SE9600537L SE9600537A SE9600537A SE9600537L SE 9600537 L SE9600537 L SE 9600537L SE 9600537 A SE9600537 A SE 9600537A SE 9600537 A SE9600537 A SE 9600537A SE 9600537 L SE9600537 L SE 9600537L
Authority
SE
Sweden
Prior art keywords
guard space
delay spread
ofdm system
guard
symbols
Prior art date
Application number
SE9600537A
Other languages
Unknown language ( )
English (en)
Other versions
SE9600537D0 (sv
SE504897C2 (sv
Inventor
Roger Larsson
Original Assignee
Telia Ab
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 Telia Ab filed Critical Telia Ab
Priority to SE9600537A priority Critical patent/SE504897C2/sv
Publication of SE9600537D0 publication Critical patent/SE9600537D0/sv
Priority to DK97904692T priority patent/DK0880837T3/da
Priority to DE69730414T priority patent/DE69730414T2/de
Priority to EP97904692A priority patent/EP0880837B1/en
Priority to PCT/SE1997/000109 priority patent/WO1997030531A1/en
Publication of SE9600537L publication Critical patent/SE9600537L/sv
Publication of SE504897C2 publication Critical patent/SE504897C2/sv
Priority to NO19983589A priority patent/NO322263B1/no

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
    • H04L27/2602—Signal structure
    • H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Circuits Of Receivers In General (AREA)
  • Transmitters (AREA)
SE9600537A 1996-02-14 1996-02-14 Förfarande och anordning i ett OFDM system med variabel varaktighet av symbolskur SE504897C2 (sv)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE9600537A SE504897C2 (sv) 1996-02-14 1996-02-14 Förfarande och anordning i ett OFDM system med variabel varaktighet av symbolskur
DK97904692T DK0880837T3 (da) 1996-02-14 1997-01-23 Justering af garderingsmellemrumsvarigheden i et OFDM-system
DE69730414T DE69730414T2 (de) 1996-02-14 1997-01-23 Anpassung des Schutzintervalls in einem OFDM system
EP97904692A EP0880837B1 (en) 1996-02-14 1997-01-23 Adjustment of the guard space duration in an OFDM system
PCT/SE1997/000109 WO1997030531A1 (en) 1996-02-14 1997-01-23 Improvements in or relating to ofdm systems
NO19983589A NO322263B1 (no) 1996-02-14 1998-08-05 OFDM-system, mottaker for anvendelse i OFDM-systemet, samt fremgangsmate for a drive et OFDM-system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9600537A SE504897C2 (sv) 1996-02-14 1996-02-14 Förfarande och anordning i ett OFDM system med variabel varaktighet av symbolskur

Publications (3)

Publication Number Publication Date
SE9600537D0 SE9600537D0 (sv) 1996-02-14
SE9600537L true SE9600537L (sv) 1997-05-26
SE504897C2 SE504897C2 (sv) 1997-05-26

Family

ID=20401385

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9600537A SE504897C2 (sv) 1996-02-14 1996-02-14 Förfarande och anordning i ett OFDM system med variabel varaktighet av symbolskur

Country Status (6)

Country Link
EP (1) EP0880837B1 (sv)
DE (1) DE69730414T2 (sv)
DK (1) DK0880837T3 (sv)
NO (1) NO322263B1 (sv)
SE (1) SE504897C2 (sv)
WO (1) WO1997030531A1 (sv)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2154853B1 (en) 1998-01-06 2011-11-16 Mosaid Technologies Incorporated Multicarrier modulation system, with variable symbol rate
US6519291B1 (en) * 1998-02-03 2003-02-11 Lucent Technologies Inc. Reduction of interference in discrete multi-tone (DMT) based communications systems
DE19858106B4 (de) * 1998-12-16 2014-09-25 Telefonaktiebolaget Lm Ericsson (Publ) Empfänger und Verfahren zum Verhindern einer Zwischensymbolstörung in einem Hochgeschwindigkeitsübertragungssystem
JP2000244441A (ja) 1998-12-22 2000-09-08 Matsushita Electric Ind Co Ltd Ｏｆｄｍ送受信装置
FR2794915A1 (fr) * 1999-06-14 2000-12-15 Canon Kk Procede et dispositif d'emission, procede et dispositif de reception, et systemes les mettant en oeuvre
EP1065855A1 (en) * 1999-06-29 2001-01-03 Sony International (Europe) GmbH Adaptation of cyclic extensions in an OFDM communication system
GB2364205B (en) * 2000-06-29 2002-09-18 Piping Hot Networks Ltd Broadband communications
JP3628977B2 (ja) * 2001-05-16 2005-03-16 松下電器産業株式会社 無線基地局装置及び通信端末装置
US7548875B2 (en) 2001-06-27 2009-06-16 John Mikkelsen Media delivery platform
US7298785B2 (en) 2001-07-04 2007-11-20 Kabushiki Kaisha Toyota Chuo Kenkyusho Multicarrier demodulation method and apparatus, and multicarrier modulation method and apparatus
JP3649326B2 (ja) * 2001-11-13 2005-05-18 日本電気株式会社 Ｏｆｄｍ方式のガードインターバル長制御方法及びｏｆｄｍ送受信装置
EP1868339A1 (en) * 2001-11-28 2007-12-19 Fujitsu Ltd. Orthogonal frequency division multiplex transmission method
US8325590B2 (en) * 2002-02-27 2012-12-04 Apple Inc. OFDM communications system
SE527445C2 (sv) * 2003-03-25 2006-03-07 Telia Ab Lägesanpassat skyddsintervall för OFDM-kommunikation
US7602696B2 (en) 2003-06-27 2009-10-13 Intel Corporation Adaptive guard intervals in OFDM systems
DE10348818B4 (de) * 2003-10-21 2005-11-10 Universität Hannover Verfahren zur Regelung eines Schutzintervalls von Datenströmen in digitalen Funkübertragungseinrichtungen und Funkempfangsgerät hierzu
JP4291674B2 (ja) * 2003-11-11 2009-07-08 株式会社エヌ・ティ・ティ・ドコモ Ｏｆｄｍ送信機及びｏｆｄｍ受信機
JP4583054B2 (ja) * 2004-03-05 2010-11-17 株式会社エヌ・ティ・ティ・ドコモ 移動局および基地局
JP4417765B2 (ja) * 2004-04-14 2010-02-17 株式会社エヌ・ティ・ティ・ドコモ 無線伝送システム、無線中継システム、及び通信装置
US8089855B2 (en) 2004-06-04 2012-01-03 Qualcomm Incorporated Transmission of overhead information for broadcast and multicast services in a wireless communication system
US8149685B2 (en) 2004-09-03 2012-04-03 University Of South Florida Covert OFDM transmission using cyclic prefix
EP1827039B1 (en) * 2004-12-14 2016-08-17 Fujitsu Limited Wireless communication device, and communication method
US7742444B2 (en) 2005-03-15 2010-06-22 Qualcomm Incorporated Multiple other sector information combining for power control in a wireless communication system
US8750908B2 (en) 2005-06-16 2014-06-10 Qualcomm Incorporated Quick paging channel with reduced probability of missed page
US9055552B2 (en) 2005-06-16 2015-06-09 Qualcomm Incorporated Quick paging channel with reduced probability of missed page
KR101003087B1 (ko) * 2005-06-17 2010-12-21 삼성전자주식회사 이동통신 시스템에서 방송 데이터의 송수신 장치 및 방법
EP1734714B1 (en) * 2005-06-17 2012-07-18 Samsung Electronics Co., Ltd. Apparatus and method for transmitting/receiving broadcast data in a mobile communication system
EP1941642A1 (en) 2005-10-27 2008-07-09 QUALCOMM Incorporated A method and apparatus for setting reverse link cqi reporting modes in wireless communication system
US20090207790A1 (en) 2005-10-27 2009-08-20 Qualcomm Incorporated Method and apparatus for settingtuneawaystatus in an open state in wireless communication system
US7944808B2 (en) 2006-03-24 2011-05-17 Lg Electronics Inc. OFDM symbol design for different channel conditions and for backward compatibility with 1xEV-DO and NxEV-DO
EP2034644A4 (en) * 2006-06-26 2010-11-10 Kyocera Corp OFDM COMMUNICATION APPARATUS AND METHOD FOR DECIDING THE PROTECTION INTERVAL LENGTH
WO2008115105A1 (en) * 2007-03-16 2008-09-25 Telefonaktiebolaget Lm Ericsson (Publ) A method and a device for reduced interference in a cellular access system.
EP3210354B1 (en) 2014-10-24 2024-04-10 InterDigital Patent Holdings, Inc. Wlan designs for supporting an outdoor propagation channel

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9218874D0 (en) * 1992-09-07 1992-10-21 British Broadcasting Corp Improvements relating to the transmission of frequency division multiplex signals
DE4425713C1 (de) * 1994-07-20 1995-04-20 Inst Rundfunktechnik Gmbh Verfahren zur Vielträger Modulation und Demodulation von digital codierten Daten

Also Published As

Publication number Publication date
DE69730414T2 (de) 2005-09-08
NO983589D0 (no) 1998-08-05
SE9600537D0 (sv) 1996-02-14
NO322263B1 (no) 2006-09-04
NO983589L (no) 1998-10-14
EP0880837B1 (en) 2004-08-25
WO1997030531A1 (en) 1997-08-21
SE504897C2 (sv) 1997-05-26
DK0880837T3 (da) 2005-01-03
DE69730414D1 (de) 2004-09-30
EP0880837A1 (en) 1998-12-02

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Legal Events

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NUG Patent has lapsed