JPH04501348A - 送信機、送信方法、受信機 - Google Patents
送信機、送信方法、受信機Info
- Publication number
- JPH04501348A JPH04501348A JP1511515A JP51151589A JPH04501348A JP H04501348 A JPH04501348 A JP H04501348A JP 1511515 A JP1511515 A JP 1511515A JP 51151589 A JP51151589 A JP 51151589A JP H04501348 A JPH04501348 A JP H04501348A
- Authority
- JP
- Japan
- Prior art keywords
- transmitter
- period
- receiver
- transmission
- signal
- 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
- 230000005540 biological transmission Effects 0.000 title claims description 149
- 238000000034 method Methods 0.000 title claims description 44
- 230000007704 transition Effects 0.000 claims description 30
- 238000012360 testing method Methods 0.000 claims description 28
- 238000004364 calculation method Methods 0.000 claims description 21
- 238000005070 sampling Methods 0.000 claims description 14
- 238000002592 echocardiography Methods 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 7
- 230000001360 synchronised effect Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 3
- 241000209140 Triticum Species 0.000 claims 1
- 235000021307 Triticum Nutrition 0.000 claims 1
- 230000003750 conditioning effect Effects 0.000 claims 1
- 238000004458 analytical method Methods 0.000 description 23
- 238000010586 diagram Methods 0.000 description 20
- 238000004891 communication Methods 0.000 description 18
- 230000004044 response Effects 0.000 description 17
- 238000012545 processing Methods 0.000 description 16
- 238000001228 spectrum Methods 0.000 description 15
- 230000010363 phase shift Effects 0.000 description 11
- 230000010365 information processing Effects 0.000 description 8
- 239000002131 composite material Substances 0.000 description 6
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- 238000007493 shaping process Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 230000002829 reductive effect Effects 0.000 description 4
- 230000003595 spectral effect Effects 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
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- 238000003199 nucleic acid amplification method Methods 0.000 description 3
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- 230000008859 change Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 2
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- 239000011159 matrix material Substances 0.000 description 2
- 238000010223 real-time analysis Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 210000002784 stomach Anatomy 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 208000035742 Air-borne transmission Diseases 0.000 description 1
- 206010068829 Overconfidence Diseases 0.000 description 1
- 241000287462 Phalacrocorax carbo Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000005557 airborne transmission Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- RDYMFSUJUZBWLH-UHFFFAOYSA-N endosulfan Chemical compound C12COS(=O)OCC2C2(Cl)C(Cl)=C(Cl)C1(Cl)C2(Cl)Cl RDYMFSUJUZBWLH-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
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- 230000036961 partial effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008521 reorganization Effects 0.000 description 1
- 238000010897 surface acoustic wave method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Transmitters (AREA)
- Burglar Alarm Systems (AREA)
- Radar Systems Or Details Thereof (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Pens And Brushes (AREA)
- Radio Relay Systems (AREA)
- Communication Control (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Mobile Radio Communication Systems (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Electroluminescent Light Sources (AREA)
- Cephalosporin Compounds (AREA)
- Saccharide Compounds (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.複数の周波数を同時に使用する変調波の伝送のための方法であって、該方法 が、周期T+ΔTの間に記号を送信する連続ステップを含み、2つの送信周波数 が1/Tだけ分離されており、前記Tが有効送信期間であり、且つ前記ΔTが遷 移期間であって、様々な周波数に対応する直交チャネルを与えるために、前記周 期Tの有効送信期間の間に信号のサンプリングを受信端において行うことを可能 にする同期信号が送信されることを特徴とする方法。 2.前記ΔT>0であることを特徴とする請求項1に記載の方法。 3.前記Tが前記ΔTよりも大きいことを特徴とする請求項1又は2に記載の方 法。 4.使用される第1の周波数loがk/2Tに等しく、前記kが正の整数又はゼ ロであることを特徴とする請求項1から3のいずれか一項に記載の方法。 5.前記遷移期間の間は送信が停止されていることを特徴とする請求項1から4 のいずれか一項に記載の方法。 6.前記周期Tの有効送信期間の間のパターンを決定するためのステップと、前 記周期Tの送信期間の間の前記パターンの送信及び周期ΔTの遷移期間の間の前 記パターンの中断のない連続のステップとを含むことを特徴とする請求項1から 4のいずれか一項に記載の方法。 7.前記周期Tの有効送信期間の各々の間に、1つの記号が各周波数において送 信されることを特徴とする請求項1から6のいずれか一項に記載の方法。 8.前記周期T+ΔTの有効送信期間の各々の間において、1つの対「実数部、 虚数部」又は「振幅、位相」が各周波数上において送信され、前記「実数部、虚 数部」又は「振幅、位相」の対が送信されるべき情報と一対一の等価関係にある ことを特徴とする請求項1から7のいずれか一項に記載の方法。 9.前記対「実数部、虚数部」又は「振幅、位相」の使用可能な数が4より多い ことを特徴とする請求項1から8のいずれか一項に記載の方法。 10.請求項1から9のいずれか一項に記載の方法の実行を可能にすることを特 徴とする送信機。 11.前記周期Tの有効送信期間の間に1つの記号を各々の使用周波数において 送信することを可能にする変調装置(90)を有することを特徴とする請求項1 0に記載の送信機。 12.前記変調装置(90)がN個の変調器(91〜9N)を有し、前記Nが使 用周波数の数であり、前記N個の変調器の出力が1つの合計装置(76)の入力 に接続されていることを特徴とする請求項11に記載の送信機。 13.前記合計装置が1つの対称配分トリ−(760)を有することを特徴とす る請求項12に記載の送信機。 l4.前記変調装置(90)が逆フーリエ変換の計算のための装置(190)を 有することを特徴とする請求項10又は11に記載の送信機。 15.前記逆フーリエ変換の計算のための装置が高速フーリエ変換(PPT)の 計算のためのディジタル回路であることを特徴とする請求項14の記載の送信機 。 16.送信チャネルの1つがゼロ周波数搬送波を中心とさせられていることを特 徴とする請求項10から15のいずれか一項に記載の送信機。 17.前記麦調装置(90)が中間周波数で作動することを特徴とする請求項1 1から15のいずれか一項に記載の送信機。 18.前記変調装置(90)が搬送波変調のためのディジタル装置であることを 特徴とする請求項11から15のいずれか一項に記載の送信機。 19.振幅A及び/又は位相φに関する校正信号を、少なくとも幾つかの使用周 波数上において発生させる手段を有することを特徴とする請求項11から17の いずれか一項に記載の送信機。 20.前記送信機がテレビ送信送信機であることを特徴とする請求項10から1 9のいずれか一項に記載の送信機。 21.前記送信機が無線送信送信機であることを特徴とする請求項10から20 のいずれか一項に記載の送信機。 22.前記送信機が高品位テレビ送信送信機であることを特徴とする請求項20 に記載の送信機。 23.前記送信機がデータ送信機であることを特徴とする請求項10から22の いずれか一項に記載の送信機。 24.請求項1から9に記載の方法によって送信される波の受信を可能にするこ とを特徴とする受信機。 25.信号と同期したサンプリングのための手段を有する受信機であって、該受 信機が、複数の周波数上において1つの周期T+ΔTの間に送信される記号を使 用する変調波送信を復調するための手段を有し、2つの送信周波数が1/Tだけ 分離されており、前記Tが有効送信期間であり、且つ前記ΔTが遷移期間であっ て、さらに該受信機が、保護期間ΔTを使用して受信信号と該受信機とを同期化 することを確保する1つのサーボ制御装置(49)を有することとを特徴とする 請求項24に記載の受信機。 26.少なくとも一部分の信号の平均出力の検出装置によって制御される1つの 自動利得制御装置(AGC)を有することを特徴とする請求項24又は25に記 載の受信機。 27.「実数部、虚数部」又は「振幅、位相」の対をディジタル語に変換するた めの、前記対の復号手段(45)を有することを特徴とする請求項24から26 のいずれか一項に記載の受信機。 28.高速フーリエ変換(FFT)の計算のための装置(483)を少なくとも 1つ有することを特徴とする請求項24、25、26、又は28に記載の受信機 。 29.前記高速フーリエ変換(FFT)の計算のための装置(483)が、N個 の直交チャネルの分離のためのフーリエ変換の完全な計算を行うことを特徴とす る請求項4に記載の受信機。 30.校正信号から基準位相及び/又は基準振幅を供給することが可能な1つの テスト装置(601)を有することを特徴とする請求項24から29のいずれか 一項に記載の受信機。 31.送信から生じる信号の中の撹拌を補償するための1つの等化装置(587 )を有することを特徴とする請求項30に記載の受信機。 32.複数のチャネルを直交化するための、周期Δtの遷移期間を使用する再直 交化手段(482、4821、4822を有することを特徴とする請求項24か ら31のいずれか一項に記載の受信機。 33.前記受信機が無線電話送信の受信機であることを特徴とする請求項24か ら32のいずれか一項に記載の受信機。 34.前記受信機がテレビ送信の受信機であることを特徴とする請求項24から 32のいずれか一項に記載の受信機。 35.N個の直交チャネルの分離ステップが、信号の高速フーリエ変換(FFT )計算のためのステップを含むことを特徴とする変調波の受信のための方法。 36.N個のチャンネルにおいて受信された信号からテレビ信号を復元するため のステップを含むことを特徴とする請求項35に記載の方法。 37.受信機と送信される記号との同期を行うための、及び多重エコーを除去す るための、記号送信の間の保護期間ΔTの使用。 38.前記受信機が高品位テレビ送信の受信機であることを特徴とする請求項3 4に記載の受信機。 39.前記受信機がデータ受信機であることを特徴とする請求項24から34の いずれか一項に記載の受信機。
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR888813832A FR2638305B1 (fr) | 1988-10-21 | 1988-10-21 | Emetteur et procede d'emission |
FR88/13833 | 1988-10-21 | ||
FR8813833A FR2638306A1 (fr) | 1988-10-21 | 1988-10-21 | Recepteur |
FR88/13832 | 1988-10-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH04501348A true JPH04501348A (ja) | 1992-03-05 |
JP2806587B2 JP2806587B2 (ja) | 1998-09-30 |
Family
ID=26226947
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1511515A Expired - Lifetime JP2806587B2 (ja) | 1988-10-21 | 1989-10-20 | 送信機、送信方法、受信機 |
Country Status (14)
Country | Link |
---|---|
US (1) | US5311550A (ja) |
EP (2) | EP0439539B1 (ja) |
JP (1) | JP2806587B2 (ja) |
KR (1) | KR0139527B1 (ja) |
AT (1) | ATE108966T1 (ja) |
AU (1) | AU628102B2 (ja) |
DE (1) | DE68916970T2 (ja) |
DK (1) | DK174720B1 (ja) |
ES (1) | ES2065409T3 (ja) |
FI (1) | FI111422B (ja) |
GR (1) | GR3015093T3 (ja) |
NO (1) | NO303959B1 (ja) |
RU (1) | RU2101870C1 (ja) |
WO (1) | WO1990004893A1 (ja) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09135230A (ja) * | 1995-09-06 | 1997-05-20 | Jisedai Digital Television Hoso Syst Kenkyusho:Kk | 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 |
JPH09181699A (ja) * | 1995-12-22 | 1997-07-11 | Nec Corp | 移動中継装置 |
JPH1079690A (ja) * | 1995-12-12 | 1998-03-24 | Matsushita Electric Ind Co Ltd | ディジタル通信装置 |
JPH10209999A (ja) * | 1997-01-17 | 1998-08-07 | Nec Corp | 自動周波数制御方式 |
JPH10224319A (ja) * | 1997-01-31 | 1998-08-21 | Jisedai Digital Television Hoso Syst Kenkyusho:Kk | Dft回路とofdm同期復調装置 |
JPH10243278A (ja) * | 1997-02-28 | 1998-09-11 | Olympus Optical Co Ltd | テレビカメラ装置 |
JPH10276166A (ja) * | 1997-03-31 | 1998-10-13 | Jisedai Digital Television Hoso Syst Kenkyusho:Kk | Afc回路 |
WO1998054860A1 (fr) * | 1997-05-30 | 1998-12-03 | Matsushita Electric Industrial Co., Ltd. | Procede de transmission sur porteuses multiples, et emetteur de donnees |
WO1999001956A1 (fr) * | 1997-07-01 | 1999-01-14 | Advanced Digital Television Broadcasting Laboratory | Systeme de transmission par multiplexage a repartition en frequence orthogonale, son emetteur et son recepteur |
WO2000011824A1 (fr) * | 1998-08-24 | 2000-03-02 | Mitsubishi Denki Kabushiki Kaisha | Modulateur de signaux et procede de commande de reception associe |
US7324432B1 (en) | 1999-07-05 | 2008-01-29 | Samsung Electronics Co., Ltd. | Apparatus of compensating for frequency offset using pilot symbol in an orthogonal frequency division multiplexing system |
Families Citing this family (105)
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US5291289A (en) * | 1990-11-16 | 1994-03-01 | North American Philips Corporation | Method and apparatus for transmission and reception of a digital television signal using multicarrier modulation |
FR2670062B1 (fr) * | 1990-11-30 | 1993-11-12 | Thomson Csf | Procede de recalage des oscillateurs locaux d'un recepteur et dispositif pour la mise en óoeuvre du procede. |
FR2672755B1 (fr) * | 1991-02-12 | 1993-05-07 | Thomson Csf | Procede de codage en binaire des points d'une constellation utilisee dans une modulation multiporteuse de type ofdm. |
USRE39890E1 (en) | 1991-03-27 | 2007-10-23 | Matsushita Electric Industrial Co., Ltd. | Communication system |
US5600672A (en) | 1991-03-27 | 1997-02-04 | Matsushita Electric Industrial Co., Ltd. | Communication system |
USRE40241E1 (en) | 1991-03-27 | 2008-04-15 | Matsushita Electric Industrial Co., Ltd. | Communication system |
EP0766478B1 (en) * | 1991-03-27 | 2002-03-27 | Matsushita Electric Industrial Co., Ltd. | Signal transmission system |
USRE42643E1 (en) | 1991-03-27 | 2011-08-23 | Panasonic Corporation | Communication system |
US5387941A (en) * | 1991-06-14 | 1995-02-07 | Wavephore, Inc. | Data with video transmitter |
US5327237A (en) * | 1991-06-14 | 1994-07-05 | Wavephore, Inc. | Transmitting data with video |
US5410360A (en) * | 1991-06-14 | 1995-04-25 | Wavephore, Inc. | Timing control for injecting a burst and data into a video signal |
US5831679A (en) * | 1991-06-14 | 1998-11-03 | Wavephore, Inc. | Network for retrieval and video transmission of information |
US5559559A (en) * | 1991-06-14 | 1996-09-24 | Wavephore, Inc. | Transmitting a secondary signal with dynamic injection level control |
US5617148A (en) * | 1991-06-14 | 1997-04-01 | Wavephore, Inc. | Filter by-pass for transmitting an additional signal with a video signal |
FR2680061B1 (fr) * | 1991-08-02 | 1993-11-12 | Thomson Csf | Procede d'emission d'un signal numerise selon une modulation multiporteuse de type ofdm, emetteur et recepteur pour la mise en óoeuvre dudit procede. |
GB2260872B (en) * | 1991-09-20 | 1995-10-25 | Sharp Kk | An optical transmission system |
US5892879A (en) | 1992-03-26 | 1999-04-06 | Matsushita Electric Industrial Co., Ltd. | Communication system for plural data streams |
US6724976B2 (en) | 1992-03-26 | 2004-04-20 | Matsushita Electric Industrial Co., Ltd. | Communication system |
US5802241A (en) | 1992-03-26 | 1998-09-01 | Matsushita Electric Industrial Co., Ltd. | Communication system |
USRE38513E1 (en) | 1992-03-26 | 2004-05-11 | Matsushita Electric Industrial Co., Ltd. | Communication system |
CN1032099C (zh) * | 1992-03-26 | 1996-06-19 | 松下电器产业株式会社 | 通信系统 |
US7894541B2 (en) | 1992-03-26 | 2011-02-22 | Panasonic Corporation | Communication system |
US6728467B2 (en) | 1992-03-26 | 2004-04-27 | Matsushita Electric Industrial Co., Ltd. | Communication system |
US7302007B1 (en) | 1992-03-26 | 2007-11-27 | Matsushita Electric Industrial Co., Ltd. | Communication system |
FR2698504B1 (fr) * | 1992-11-24 | 1995-01-20 | Thomson Csf | Procédé et dispositif d'égalisation non linéaire d'un signal multi-porteuse dans une liaison satellite. |
WO1994013077A1 (fr) * | 1992-12-01 | 1994-06-09 | Thomson-Csf | Transmission ofdm avec multiplexage en polarisation |
FR2701178A1 (fr) * | 1993-02-03 | 1994-08-05 | Philips Electronique Lab | Système de communication par étalement de spectre à multiutilisateurs. |
GB9302528D0 (en) * | 1993-02-09 | 1993-03-24 | British Broadcasting Corp | Television systems |
DE4310031C2 (de) * | 1993-03-27 | 1997-07-17 | Grundig Emv | Verfahren zur Korrektur von Phase und Amplitude eines breitbandigen Empfangssignals mit Hilfe von Referenzsignalen |
GB2278257B (en) * | 1993-05-05 | 1996-10-02 | British Broadcasting Corp | Receiving equipment for digital transmissions |
US5675572A (en) * | 1993-07-28 | 1997-10-07 | Sony Corporation | Orthogonal frequency division multiplex modulation apparatus and orthogonal frequency division multiplex demodulation apparatus |
JP3041175B2 (ja) * | 1993-11-12 | 2000-05-15 | 株式会社東芝 | Ofdm同期復調回路 |
JP3074103B2 (ja) * | 1993-11-16 | 2000-08-07 | 株式会社東芝 | Ofdm同期復調回路 |
US5572264A (en) | 1994-02-14 | 1996-11-05 | Hitachi, Ltd. | High definition TV signal receiver |
JP3371506B2 (ja) * | 1994-02-14 | 2003-01-27 | 株式会社日立製作所 | 受信装置 |
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- 1989-10-20 WO PCT/FR1989/000546 patent/WO1990004893A1/fr active IP Right Grant
- 1989-10-20 JP JP1511515A patent/JP2806587B2/ja not_active Expired - Lifetime
- 1989-10-20 EP EP89912454A patent/EP0439539B1/fr not_active Expired - Lifetime
- 1989-10-20 KR KR1019900701315A patent/KR0139527B1/ko not_active Expired - Lifetime
- 1989-10-20 EP EP89402894A patent/EP0365431B1/fr not_active Expired - Lifetime
- 1989-10-20 RU SU4895294A patent/RU2101870C1/ru active
- 1989-10-20 ES ES89402894T patent/ES2065409T3/es not_active Expired - Lifetime
- 1989-10-20 US US07/678,262 patent/US5311550A/en not_active Expired - Lifetime
- 1989-10-20 AT AT89912454T patent/ATE108966T1/de not_active IP Right Cessation
- 1989-10-20 AU AU45069/89A patent/AU628102B2/en not_active Expired
-
1991
- 1991-04-16 NO NO911483A patent/NO303959B1/no unknown
- 1991-04-19 DK DK199100714A patent/DK174720B1/da not_active IP Right Cessation
- 1991-04-19 FI FI911914A patent/FI111422B/fi active
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1995
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Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
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US5818813A (en) * | 1995-09-06 | 1998-10-06 | Advanced Digital Television Broadcasting Laboratory | Orthogonal frequency division multiplexing transmission system and transmitter and receiver adapted to the same |
JPH09135230A (ja) * | 1995-09-06 | 1997-05-20 | Jisedai Digital Television Hoso Syst Kenkyusho:Kk | 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 |
JPH1079690A (ja) * | 1995-12-12 | 1998-03-24 | Matsushita Electric Ind Co Ltd | ディジタル通信装置 |
JPH09181699A (ja) * | 1995-12-22 | 1997-07-11 | Nec Corp | 移動中継装置 |
JPH10209999A (ja) * | 1997-01-17 | 1998-08-07 | Nec Corp | 自動周波数制御方式 |
JPH10224319A (ja) * | 1997-01-31 | 1998-08-21 | Jisedai Digital Television Hoso Syst Kenkyusho:Kk | Dft回路とofdm同期復調装置 |
JPH10243278A (ja) * | 1997-02-28 | 1998-09-11 | Olympus Optical Co Ltd | テレビカメラ装置 |
JPH10276166A (ja) * | 1997-03-31 | 1998-10-13 | Jisedai Digital Television Hoso Syst Kenkyusho:Kk | Afc回路 |
WO1998054860A1 (fr) * | 1997-05-30 | 1998-12-03 | Matsushita Electric Industrial Co., Ltd. | Procede de transmission sur porteuses multiples, et emetteur de donnees |
US6510133B1 (en) | 1997-05-30 | 2003-01-21 | Matsushita Electric Industrial Co., Ltd. | Multi-carrier transmission method and data transmitter |
WO1999001956A1 (fr) * | 1997-07-01 | 1999-01-14 | Advanced Digital Television Broadcasting Laboratory | Systeme de transmission par multiplexage a repartition en frequence orthogonale, son emetteur et son recepteur |
WO2000011824A1 (fr) * | 1998-08-24 | 2000-03-02 | Mitsubishi Denki Kabushiki Kaisha | Modulateur de signaux et procede de commande de reception associe |
US7324432B1 (en) | 1999-07-05 | 2008-01-29 | Samsung Electronics Co., Ltd. | Apparatus of compensating for frequency offset using pilot symbol in an orthogonal frequency division multiplexing system |
Also Published As
Publication number | Publication date |
---|---|
ES2065409T3 (es) | 1995-02-16 |
EP0365431B1 (fr) | 1994-12-14 |
FI111422B (fi) | 2003-07-15 |
DE68916970D1 (de) | 1994-08-25 |
JP2806587B2 (ja) | 1998-09-30 |
NO911483L (no) | 1991-05-30 |
DK71491A (da) | 1991-06-21 |
GR3015093T3 (en) | 1995-05-31 |
WO1990004893A1 (fr) | 1990-05-03 |
DE68916970T2 (de) | 1994-11-24 |
KR0139527B1 (ko) | 1998-07-01 |
AU628102B2 (en) | 1992-09-10 |
DK71491D0 (da) | 1991-04-19 |
FI911914A0 (fi) | 1991-04-19 |
RU2101870C1 (ru) | 1998-01-10 |
AU4506989A (en) | 1990-05-14 |
EP0439539A1 (fr) | 1991-08-07 |
EP0439539B1 (fr) | 1994-07-20 |
KR900702684A (ko) | 1990-12-08 |
NO911483D0 (no) | 1991-04-16 |
EP0365431A1 (fr) | 1990-04-25 |
ATE108966T1 (de) | 1994-08-15 |
NO303959B1 (no) | 1998-09-28 |
DK174720B1 (da) | 2003-10-06 |
US5311550A (en) | 1994-05-10 |
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