SE9600537D0 - Improvements in or relating to OFDM systems - Google Patents
Improvements in or relating to OFDM systemsInfo
- Publication number
- SE9600537D0 SE9600537D0 SE9600537A SE9600537A SE9600537D0 SE 9600537 D0 SE9600537 D0 SE 9600537D0 SE 9600537 A SE9600537 A SE 9600537A SE 9600537 A SE9600537 A SE 9600537A SE 9600537 D0 SE9600537 D0 SE 9600537D0
- Authority
- SE
- Sweden
- Prior art keywords
- guard space
- delay spread
- guard
- symbols
- conditions
- Prior art date
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)
- Transmitters (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Circuits Of Receivers In General (AREA)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9600537A SE9600537L (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 |
PCT/SE1997/000109 WO1997030531A1 (en) | 1996-02-14 | 1997-01-23 | Improvements in or relating to ofdm systems |
EP97904692A EP0880837B1 (en) | 1996-02-14 | 1997-01-23 | Adjustment of the guard space duration in an OFDM system |
DE69730414T DE69730414T2 (de) | 1996-02-14 | 1997-01-23 | Anpassung des Schutzintervalls in einem OFDM system |
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 SE9600537L (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 true SE9600537D0 (sv) | 1996-02-14 |
SE504897C2 SE504897C2 (sv) | 1997-05-26 |
SE9600537L SE9600537L (sv) | 1997-05-26 |
Family
ID=20401385
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE9600537A SE9600537L (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) | SE9600537L (sv) |
WO (1) | WO1997030531A1 (sv) |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2254301B1 (en) | 1998-01-06 | 2013-06-19 | Mosaid Technologies Incorporated | Multicarrier modulation system with variable symbol rates |
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 |
EP2432190A3 (en) | 2001-06-27 | 2014-02-19 | SKKY Incorporated | Improved 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 |
EP1868337B1 (en) * | 2001-11-28 | 2017-01-04 | 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 |
US8588203B2 (en) | 2004-06-04 | 2013-11-19 | Qualcomm Incorporated | Wireless communication system with improved broadcast coverage |
US8149685B2 (en) | 2004-09-03 | 2012-04-03 | University Of South Florida | Covert OFDM transmission using cyclic prefix |
WO2006064541A1 (ja) | 2004-12-14 | 2006-06-22 | Fujitsu Limited | 無線通信装置および通信方法 |
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 |
US20090207790A1 (en) | 2005-10-27 | 2009-08-20 | Qualcomm Incorporated | Method and apparatus for settingtuneawaystatus in an open state in wireless communication system |
EP1949733A1 (en) | 2005-10-27 | 2008-07-30 | Qualcomm Incorporated | A method of serving sector maintenance in a wireless communication systems |
JP4903258B2 (ja) * | 2006-03-24 | 2012-03-28 | エルジー エレクトロニクス インコーポレイティド | 異なるチャネル条件と1xEV−DO及びNxEV−DOとの後方互換性のためのOFDMシンボル設計 |
KR100979598B1 (ko) * | 2006-06-26 | 2010-09-01 | 교세라 가부시키가이샤 | Ofdm 통신 장치 및 가드 인터벌 길이 결정 방법 |
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)
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 |
-
1996
- 1996-02-14 SE SE9600537A patent/SE9600537L/sv not_active IP Right Cessation
-
1997
- 1997-01-23 WO PCT/SE1997/000109 patent/WO1997030531A1/en active IP Right Grant
- 1997-01-23 DE DE69730414T patent/DE69730414T2/de not_active Expired - Lifetime
- 1997-01-23 DK DK97904692T patent/DK0880837T3/da active
- 1997-01-23 EP EP97904692A patent/EP0880837B1/en not_active Expired - Lifetime
-
1998
- 1998-08-05 NO NO19983589A patent/NO322263B1/no not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
SE504897C2 (sv) | 1997-05-26 |
EP0880837B1 (en) | 2004-08-25 |
NO983589D0 (no) | 1998-08-05 |
DE69730414T2 (de) | 2005-09-08 |
DK0880837T3 (da) | 2005-01-03 |
SE9600537L (sv) | 1997-05-26 |
NO983589L (no) | 1998-10-14 |
EP0880837A1 (en) | 1998-12-02 |
WO1997030531A1 (en) | 1997-08-21 |
NO322263B1 (no) | 2006-09-04 |
DE69730414D1 (de) | 2004-09-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |