JPH09512156A - 持続波ネットワークにおける多重キャリア伝送 - Google Patents
持続波ネットワークにおける多重キャリア伝送Info
- Publication number
- JPH09512156A JPH09512156A JP8504719A JP50471996A JPH09512156A JP H09512156 A JPH09512156 A JP H09512156A JP 8504719 A JP8504719 A JP 8504719A JP 50471996 A JP50471996 A JP 50471996A JP H09512156 A JPH09512156 A JP H09512156A
- Authority
- JP
- Japan
- Prior art keywords
- data
- ofdm
- symbol
- protection period
- symbols
- 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
Links
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/02—Channels characterised by the type of signal
- H04L5/06—Channels characterised by the type of signal the signals being represented by different frequencies
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/65—Arrangements characterised by transmission systems for broadcast
- H04H20/67—Common-wave systems, i.e. using separate transmitters operating on substantially the same frequency
-
- 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
-
- 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]
- H04L27/2607—Cyclic extensions
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Mobile Radio Communication Systems (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Radio Relay Systems (AREA)
- Radio Transmission System (AREA)
- Radar Systems Or Details Thereof (AREA)
- Waveguides (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Television Systems (AREA)
- Near-Field Transmission Systems (AREA)
- Time-Division Multiplex Systems (AREA)
- Transmitters (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Circuits Of Receivers In General (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Small-Scale Networks (AREA)
- Handcart (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.連続するOFDM伝送フレームの形式に構成されたOFDMシンボルの時間 シーケンスが生成され、上記OFDM伝送フレームの各々が、1つ以上の制御シ ンボルを有するフレーム・ヘッダと複数のデータ・シンボルを有する有効データ 領域とからなり、連続する各制御シンボルまたは各データ・シンボルの間にそれ ぞれ保護期間を有する、ディジタル符号化データで多重キャリア変調を行う方法 において、 上記各OFDM伝送フレームの上記フレーム・ヘッダにおける上記制御シンボ ルに対する保護期間を、上記各OFDM伝送フレームの上記有効データ領域にお ける上記データ・シンボルに対する保護期間よりも長くなるように選択すること を特徴とする、ディジタル符号化データで多重キャリア変調を行う方法。 2.上記各OFDM伝送フレームの上記有効データ領域における上記データ・シ ンボルに対する上記保護期間の時間的長さが可変であることを特徴とする、請求 項1に記載のディジタル符号化データで多重キャリア変調する方法。 3.請求項1または2に記載された方法に従って変調された多重キャリアを復調 して元のディジタル符号化データを復元する方法において、受信した上記各OF DM伝送フレームの上記有効データ領域における上記データ・シンボルに対する 保護期間の長さを求め、上記データ・シンボルの各検出タイミングを、検出した 上記保護期間の長さの関数として決定することを特徴とする、多重キャリア復調 して元のディジタル符号化データを復元する方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4425713A DE4425713C1 (de) | 1994-07-20 | 1994-07-20 | Verfahren zur Vielträger Modulation und Demodulation von digital codierten Daten |
DE4425713.9 | 1994-07-20 | ||
PCT/EP1995/002868 WO1996002989A1 (de) | 1994-07-20 | 1995-07-20 | Mehrträgerübertragung in gleichwellennetzen |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH09512156A true JPH09512156A (ja) | 1997-12-02 |
JP2901018B2 JP2901018B2 (ja) | 1999-06-02 |
Family
ID=6523700
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8504719A Expired - Lifetime JP2901018B2 (ja) | 1994-07-20 | 1995-07-20 | 持続波ネットワークにおける多重キャリア伝送 |
Country Status (15)
Country | Link |
---|---|
US (1) | US6115354A (ja) |
EP (1) | EP0771497B1 (ja) |
JP (1) | JP2901018B2 (ja) |
KR (1) | KR100335035B1 (ja) |
AT (1) | ATE170685T1 (ja) |
AU (1) | AU681806B2 (ja) |
CA (1) | CA2194394C (ja) |
CZ (1) | CZ286082B6 (ja) |
DE (2) | DE4425713C1 (ja) |
DK (1) | DK0771497T3 (ja) |
ES (1) | ES2121410T3 (ja) |
FI (1) | FI114263B (ja) |
HU (1) | HU215892B (ja) |
PL (1) | PL177232B1 (ja) |
WO (1) | WO1996002989A1 (ja) |
Cited By (22)
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JP2000244441A (ja) * | 1998-12-22 | 2000-09-08 | Matsushita Electric Ind Co Ltd | Ofdm送受信装置 |
JP2001156740A (ja) * | 1999-11-30 | 2001-06-08 | Matsushita Electric Ind Co Ltd | マルチキャリア通信装置及びマルチキャリア通信方法 |
JP2006504367A (ja) * | 2002-10-25 | 2006-02-02 | クゥアルコム・インコーポレイテッド | 複数のシンボル長を使用する多重キャリア送信 |
JP2006222956A (ja) * | 2005-02-07 | 2006-08-24 | Motorola Inc | 混合モード無線通信システムにおける可変サイクリックプレフィックス |
JP2006352786A (ja) * | 2005-06-20 | 2006-12-28 | Sharp Corp | Ofdm無線通信システムおよび基地局装置および端末局装置 |
JP2006352379A (ja) * | 2005-06-14 | 2006-12-28 | Ntt Docomo Inc | 無線パラメータ群を生成する装置、送信機及び受信機 |
JP2007195022A (ja) * | 2006-01-20 | 2007-08-02 | Fujitsu Ltd | 無線通信システム及び無線通信方法 |
JP2007215241A (ja) * | 2007-05-08 | 2007-08-23 | Fujitsu Ltd | 直交周波数分割多重伝送方法 |
JP2008536426A (ja) * | 2005-04-15 | 2008-09-04 | ノキア コーポレイション | 可変ガードインタバルを用いる多搬送波システムにおける同期方法 |
JP2009239959A (ja) * | 2009-07-10 | 2009-10-15 | Ntt Docomo Inc | 受信機及び受信方法 |
JP2009290913A (ja) * | 2009-09-14 | 2009-12-10 | Fujitsu Ltd | 直交周波数分割多重伝送方法 |
JP2010088138A (ja) * | 2010-01-18 | 2010-04-15 | Fujitsu Ltd | 直交周波数分割多重伝送装置 |
JP2010098773A (ja) * | 2010-01-29 | 2010-04-30 | Ntt Docomo Inc | 送信機及び送信方法 |
JP2010263652A (ja) * | 2004-06-04 | 2010-11-18 | Qualcomm Inc | 変更可能な巡回プレフィックス長(cyclicprefixlength)を有する無線通信システム |
US7843804B2 (en) | 2001-11-28 | 2010-11-30 | Fujitsu Limited | Orthogonal frequency division multiplex transmission method |
US7848447B2 (en) | 2005-04-28 | 2010-12-07 | Ntt Docomo, Inc. | Radio parameter group generating apparatus, transmitter and receiver |
JP2011019265A (ja) * | 2010-08-30 | 2011-01-27 | Sharp Corp | Ofdm無線通信システムおよび送信装置 |
JP2012005143A (ja) * | 2011-08-16 | 2012-01-05 | Fujitsu Ltd | 無線通信システム及び無線通信方法 |
US8265183B2 (en) | 2004-12-14 | 2012-09-11 | Fujitsu Limited | Radio communication apparatus and communication method |
JP5195906B2 (ja) * | 2008-04-08 | 2013-05-15 | 日本電気株式会社 | 無線通信システム、無線通信装置、無線通信方法、プログラム |
US9876609B2 (en) | 2003-12-01 | 2018-01-23 | Qualcomm Incorporated | Method and apparatus for providing an efficient control channel structure in a wireless communication system |
US9967005B2 (en) | 2002-10-25 | 2018-05-08 | Qualcomm Incorporated | Pilots for MIMO communication systems |
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JP2802255B2 (ja) * | 1995-09-06 | 1998-09-24 | 株式会社次世代デジタルテレビジョン放送システム研究所 | 直交周波数分割多重伝送方式及びそれを用いる送信装置と受信装置 |
SE9600537L (sv) * | 1996-02-14 | 1997-05-26 | Telia Ab | Förfarande och anordning i ett OFDM system med variabel varaktighet av symbolskur |
DE19609909A1 (de) * | 1996-03-14 | 1997-09-18 | Deutsche Telekom Ag | Verfahren und System zur OFDM-Mehrträger-Übertragung von digitalen Rundfunksignalen |
JP3511798B2 (ja) * | 1996-05-08 | 2004-03-29 | 三菱電機株式会社 | ディジタル放送受信機 |
GB2329290B (en) * | 1996-05-31 | 2001-04-18 | Tracker Network | Method of transmitting and receiving data,system and receiver therefor |
GB9611425D0 (en) * | 1996-05-31 | 1996-08-07 | Tracker Network Uk Ltd | Digital communications |
JP3479418B2 (ja) * | 1996-10-18 | 2003-12-15 | アルパイン株式会社 | デジタルオーディオ放送における受信装置 |
KR100234330B1 (ko) * | 1997-09-30 | 1999-12-15 | 윤종용 | Ofdm 시스템 수신기의 보호 구간 종류 검출장치 및 그 방법 |
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JP3985173B2 (ja) * | 1998-05-29 | 2007-10-03 | ソニー株式会社 | 変調装置および方法、復調装置および方法、並びにデータ格納媒体 |
DE19858106B4 (de) | 1998-12-16 | 2014-09-25 | Telefonaktiebolaget Lm Ericsson (Publ) | Empfänger und Verfahren zum Verhindern einer Zwischensymbolstörung in einem Hochgeschwindigkeitsübertragungssystem |
FR2788907B1 (fr) * | 1999-01-27 | 2001-04-13 | St Microelectronics Sa | Generation d'intervalle de garde dans une transmission en modulation dmt |
US7952511B1 (en) | 1999-04-07 | 2011-05-31 | Geer James L | Method and apparatus for the detection of objects using electromagnetic wave attenuation patterns |
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EP1065855A1 (en) * | 1999-06-29 | 2001-01-03 | Sony International (Europe) GmbH | Adaptation of cyclic extensions in an OFDM communication system |
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1994
- 1994-07-20 DE DE4425713A patent/DE4425713C1/de not_active Expired - Lifetime
-
1995
- 1995-07-20 PL PL95318348A patent/PL177232B1/pl unknown
- 1995-07-20 HU HU9603628A patent/HU215892B/hu unknown
- 1995-07-20 WO PCT/EP1995/002868 patent/WO1996002989A1/de active IP Right Grant
- 1995-07-20 JP JP8504719A patent/JP2901018B2/ja not_active Expired - Lifetime
- 1995-07-20 AU AU31627/95A patent/AU681806B2/en not_active Expired
- 1995-07-20 ES ES95927680T patent/ES2121410T3/es not_active Expired - Lifetime
- 1995-07-20 EP EP95927680A patent/EP0771497B1/de not_active Expired - Lifetime
- 1995-07-20 CA CA002194394A patent/CA2194394C/en not_active Expired - Lifetime
- 1995-07-20 DE DE59503453T patent/DE59503453D1/de not_active Expired - Lifetime
- 1995-07-20 DK DK95927680T patent/DK0771497T3/da active
- 1995-07-20 US US08/765,070 patent/US6115354A/en not_active Expired - Lifetime
- 1995-07-20 CZ CZ19963697A patent/CZ286082B6/cs not_active IP Right Cessation
- 1995-07-20 AT AT95927680T patent/ATE170685T1/de active
- 1995-07-20 KR KR1019970700313A patent/KR100335035B1/ko not_active IP Right Cessation
-
1997
- 1997-01-17 FI FI970204A patent/FI114263B/fi not_active IP Right Cessation
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Also Published As
Publication number | Publication date |
---|---|
PL177232B1 (pl) | 1999-10-29 |
CA2194394A1 (en) | 1996-02-01 |
CZ369796A3 (en) | 1997-04-16 |
CZ286082B6 (cs) | 2000-01-12 |
HUT77417A (hu) | 1998-04-28 |
EP0771497A1 (de) | 1997-05-07 |
FI970204A0 (fi) | 1997-01-17 |
FI970204A (fi) | 1997-01-17 |
KR100335035B1 (ko) | 2002-11-22 |
ATE170685T1 (de) | 1998-09-15 |
ES2121410T3 (es) | 1998-11-16 |
EP0771497B1 (de) | 1998-09-02 |
FI114263B (fi) | 2004-09-15 |
DK0771497T3 (da) | 1999-06-07 |
AU3162795A (en) | 1996-02-16 |
DE59503453D1 (de) | 1998-10-08 |
AU681806B2 (en) | 1997-09-04 |
DE4425713C1 (de) | 1995-04-20 |
JP2901018B2 (ja) | 1999-06-02 |
PL318348A1 (en) | 1997-06-09 |
US6115354A (en) | 2000-09-05 |
HU9603628D0 (en) | 1997-02-28 |
CA2194394C (en) | 2001-12-25 |
HU215892B (hu) | 1999-03-29 |
WO1996002989A1 (de) | 1996-02-01 |
KR970705264A (ko) | 1997-09-06 |
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