JPH10507616A - 伝送システム - Google Patents
伝送システムInfo
- Publication number
- JPH10507616A JPH10507616A JP9509091A JP50909197A JPH10507616A JP H10507616 A JPH10507616 A JP H10507616A JP 9509091 A JP9509091 A JP 9509091A JP 50909197 A JP50909197 A JP 50909197A JP H10507616 A JPH10507616 A JP H10507616A
- Authority
- JP
- Japan
- Prior art keywords
- impulse response
- receiver
- auxiliary signal
- processing
- transmission medium
- 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 abstract description 56
- 230000004044 response Effects 0.000 claims abstract description 39
- 238000012545 processing Methods 0.000 claims description 52
- 230000001419 dependent effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 230000000295 complement effect Effects 0.000 claims 1
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 230000005484 gravity Effects 0.000 abstract description 9
- 239000000969 carrier Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 7
- 238000005562 fading Methods 0.000 abstract description 4
- 230000002411 adverse Effects 0.000 abstract description 2
- 238000007664 blowing Methods 0.000 abstract 1
- 230000001360 synchronised effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000012937 correction Methods 0.000 description 5
- 239000013598 vector Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000002592 echocardiography Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 231100000989 no adverse effect Toxicity 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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
-
- 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
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0071—Use of interleaving
-
- 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
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2662—Symbol synchronisation
-
- 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
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2662—Symbol synchronisation
- H04L27/2665—Fine synchronisation, e.g. by positioning the FFT window
-
- 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
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2689—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation
- H04L27/2695—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation with channel estimation, e.g. determination of delay spread, derivative or peak tracking
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Noise Elimination (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.伝送媒体を経てデジタルシンボルを受信機に送信する送信機を具え、この送 信機は伝送媒体のインパルス応答を推測する手段を具えるとともに予定の処理周 期中受信した信号を伝送媒体のインパルス応答に依存して処理する処理手段を具 える伝送システムにおいて、前記受信機は伝送媒体のインパルス応答を表わす補 助信号の中心位置に依存して前記処理周期をシンボル周期に対して位置決めする 手段を具えることを特徴とする伝送システム。 2.前記処理周期を位置決めする手段はその位置に依存して前記補助信号の中心 位置に対し補助信号の一部分を重み付けするように配列することを特徴とする請 求項1に記載の伝送システム。 3.前記処理周期を位置決めする手段は前記中心位置を中心として所定間隔外側 にある補助信号の部分を強調するように配列することを特徴とする請求項2に記 載の伝送システム。 4.前記送信機は多重キャリア変調方式に応じて前記デジタルシンボルを伝送す るように配列することを特徴とする請求項1〜3の何れかの項に記載の伝送シス テム。 5.前記処理周期を位置決めする手段は前記伝送媒体のインパルス応答よりも短 い周期を有する補助信号を得る手段を具えることを特徴とする請求項1〜4の何 れかの項に記載の伝送システム。 6.伝送媒体を経て伝送されたデジタルシンボルを受信する受信機であって伝送 媒体のインパルス応答を推測する手段を具えるとともに予定の処理周期中受信し た信号を伝送媒体のインパルス応答に依存して処理する処理手段を具えるものに おいて、この受信機は伝送媒体のインパルス応答を表わす補助信号の中心位置に 依存して前記処理周期をシンボル周期に対して位置決めする手段を具えることを 特徴とする受信機。 7.前記処理周期を位置決めする手段はその位置に依存する補助信号の一部分を 前記補助信号の中心位置に対し重み付けするように配列することを特徴とする請 求項6に記載の受信機。 8.前記処理周期を位置決めする手段は前記中心位置を中心として所定間隔外側 にある補助信号の部分を強調するように配列することを特徴とする請求項7に記 載の受信機。 9.前記受信機は多重キャリア変調方式に応じて変調された信号を受信するよう に配列することを特徴とする請求項8に記載の受信機。 10.前記処理周期を位置決めする手段は前記伝送媒体のインパルス応答よりも短 い周期を有する補助信号を得る圧縮手段を具えることを特徴とする請求項5〜9 の何れかの項に記載の受信機。
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP95202217 | 1995-08-16 | ||
| NL95202217.6 | 1995-08-16 | ||
| PCT/IB1996/000793 WO1997007620A1 (en) | 1995-08-16 | 1996-08-12 | Transmission system with improved symbol processing |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JPH10507616A true JPH10507616A (ja) | 1998-07-21 |
| JPH10507616A5 JPH10507616A5 (ja) | 2004-09-09 |
| JP3859716B2 JP3859716B2 (ja) | 2006-12-20 |
Family
ID=8220569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP50909197A Expired - Lifetime JP3859716B2 (ja) | 1995-08-16 | 1996-08-12 | 伝送システム |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US5848107A (ja) |
| EP (1) | EP0786183B1 (ja) |
| JP (1) | JP3859716B2 (ja) |
| KR (1) | KR100457987B1 (ja) |
| CN (1) | CN1097928C (ja) |
| CA (1) | CA2202752A1 (ja) |
| DE (1) | DE69632812T2 (ja) |
| TW (1) | TW315555B (ja) |
| WO (1) | WO1997007620A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012029378A1 (ja) * | 2010-09-01 | 2012-03-08 | シグナルデザイン株式会社 | Ofdm通信方式の受信方法 |
| US8290105B2 (en) | 2003-11-11 | 2012-10-16 | Ntt Docomo, Inc. | Signal reception device and method of signal reception timing detection |
Families Citing this family (46)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI102231B1 (fi) * | 1996-09-16 | 1998-10-30 | Nokia Technology Gmbh | Symbolitahdistuksen ja näytteenottotaajuuden säätömenetelmä OFDM-moduloituja lähetyksiä vastaanottavassa laitteessa sekä menetelmän toteuttava laite |
| 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 |
| GB9701984D0 (en) * | 1997-01-31 | 1997-03-19 | Digi Media Vision Ltd | Method and apparatus for recovering the amplitude and phase of an input data signal |
| US6633550B1 (en) | 1997-02-20 | 2003-10-14 | Telefonaktiebolaget Lm Ericsson (Publ) | Radio transceiver on a chip |
| SE9703630L (sv) * | 1997-03-03 | 1998-09-04 | Telia Ab | Förbättringar av, eller med avseende på, synkronisering |
| US6175550B1 (en) * | 1997-04-01 | 2001-01-16 | Lucent Technologies, Inc. | Orthogonal frequency division multiplexing system with dynamically scalable operating parameters and method thereof |
| GB9709023D0 (en) * | 1997-05-02 | 1997-06-25 | British Broadcasting Corp | Many-carrier transmission system and a receiver therefor |
| EP0895388B1 (en) * | 1997-07-28 | 2004-09-22 | Deutsche Thomson-Brandt Gmbh | Symbol synchronisation and mode detection for multicarrier signals |
| EP0895387A1 (de) | 1997-07-28 | 1999-02-03 | Deutsche Thomson-Brandt Gmbh | Erkennung des Übertragungsmodus eines DVB-Signales |
| DE19735216C2 (de) * | 1997-08-14 | 1999-07-15 | Deutsche Telekom Ag | Verfahren zur Übertragung von Mehrträgersignalen mit einer Koeffizienteneinstellung des Zeitbereichsentzerrers |
| KR100234329B1 (ko) * | 1997-09-30 | 1999-12-15 | 윤종용 | Ofdm 시스템 수신기의 fft 윈도우 위치 복원장치 및 그 방법_ |
| US6137848A (en) * | 1997-11-03 | 2000-10-24 | At&T Corp. | Method and system for joint timing recovery and channel estimation for DMT modems |
| US6700936B1 (en) | 1998-05-05 | 2004-03-02 | British Broadcasting Corporation | Many-carrier transmission system and a receiver therefor |
| JPH11346206A (ja) * | 1998-06-02 | 1999-12-14 | Mitsubishi Electric Corp | デジタル放送受信機 |
| US6442221B1 (en) * | 1998-09-22 | 2002-08-27 | Zenith Electronics Corporation | Ghost eliminating equalizer |
| JP2955285B1 (ja) * | 1998-09-30 | 1999-10-04 | 松下電器産業株式会社 | デジタルオーディオ受信機 |
| KR100510637B1 (ko) * | 1998-11-07 | 2006-02-28 | 엘지전자 주식회사 | Dvb 시스템의 동기 검출 장치 |
| EP1063824B1 (en) * | 1999-06-22 | 2006-08-02 | Matsushita Electric Industrial Co., Ltd. | Symbol synchronisation in multicarrier receivers |
| JP2001103033A (ja) | 1999-09-30 | 2001-04-13 | Hitachi Denshi Ltd | データ伝送装置 |
| DE19948370A1 (de) * | 1999-10-06 | 2001-06-21 | Infineon Technologies Ag | Einrichtung und Verfahren zur Verarbeitung eines digitalen Datensignals in einem CDMA-Funksender |
| US6477210B2 (en) * | 2000-02-07 | 2002-11-05 | At&T Corp. | System for near optimal joint channel estimation and data detection for COFDM systems |
| US6650617B1 (en) | 2000-02-22 | 2003-11-18 | Thomson Licensing S.A. | Reduced complexity FFT window synchronization for an orthogonal frequency division multiplexing system |
| GB2365714A (en) * | 2000-03-15 | 2002-02-20 | Conexant Digital Infotainment | Minimising effects of inter-symbol interference in receiver |
| US6771591B1 (en) | 2000-07-31 | 2004-08-03 | Thomson Licensing S.A. | Method and system for processing orthogonal frequency division multiplexed signals |
| US7127005B2 (en) * | 2001-03-23 | 2006-10-24 | James Stuart Wight | Computational circuits and methods for processing modulated signals having non-constant envelopes |
| EP1248119B1 (en) * | 2001-04-03 | 2005-11-02 | Mitsubishi Electric Information Technology Centre Europe B.V. | Method and Apparatus for Detecting a Target Signal and Obstacle Detection System |
| JP3798656B2 (ja) * | 2001-06-22 | 2006-07-19 | 株式会社ケンウッド | 直交周波数分割多重信号受信装置、受信装置、直交周波数分割多重信号受信方法及び受信方法 |
| US7298785B2 (en) * | 2001-07-04 | 2007-11-20 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Multicarrier demodulation method and apparatus, and multicarrier modulation method and apparatus |
| US7142502B2 (en) * | 2001-08-30 | 2006-11-28 | Intel Corporation | Technique for continuous OFDM demodulation |
| US7269125B2 (en) * | 2001-12-26 | 2007-09-11 | Xm Satellite Radio, Inc. | Method and apparatus for timing recovery in an OFDM system |
| GB0215639D0 (en) | 2002-07-05 | 2002-08-14 | British Broadcasting Corp | OFDM receivers |
| DE10239810A1 (de) * | 2002-08-29 | 2004-03-11 | Siemens Ag | Verfahren und Sendeeinrichtung zum Übertragen von Daten in einem Mehrträgersystem |
| KR100471538B1 (ko) * | 2002-09-18 | 2005-02-21 | 한기열 | 오에프디엠 시스템의 채널추정과 심볼동기 타이밍결정장치 및 방법 |
| AU2003238128A1 (en) * | 2003-06-30 | 2005-01-13 | Nokia Corporation | Faster fine timing operation in multi-carrier system |
| US20050276337A1 (en) * | 2004-06-09 | 2005-12-15 | Lucent Technologies, Inc. | Bandwidth efficient orthogonal frequency division multiplexing communication system |
| US8675631B2 (en) | 2005-03-10 | 2014-03-18 | Qualcomm Incorporated | Method and system for achieving faster device operation by logical separation of control information |
| US8144824B2 (en) * | 2005-03-10 | 2012-03-27 | Qualcomm Incorporated | Trend influenced time tracking |
| US20100157833A1 (en) * | 2005-03-10 | 2010-06-24 | Qualcomm Incorporated | Methods and systems for improved timing acquisition for varying channel conditions |
| US20060221810A1 (en) * | 2005-03-10 | 2006-10-05 | Bojan Vrcelj | Fine timing acquisition |
| WO2007024798A2 (en) | 2005-08-22 | 2007-03-01 | Applera Corporation | Apparatus, system, and method using immiscible-fluid-discrete-volumes |
| US7623607B2 (en) * | 2005-10-31 | 2009-11-24 | Qualcomm Incorporated | Methods and apparatus for determining timing in a wireless communication system |
| US8948329B2 (en) | 2005-12-15 | 2015-02-03 | Qualcomm Incorporated | Apparatus and methods for timing recovery in a wireless transceiver |
| KR100759317B1 (ko) | 2005-12-29 | 2007-09-17 | 노키아 코포레이션 | 멀티 캐리어 시스템의 고속 파인 타이밍 동작 |
| IT1404370B1 (it) * | 2010-12-29 | 2013-11-22 | Accent S P A | Ricevitore a cross-correlazione |
| RU2647656C1 (ru) * | 2017-02-14 | 2018-03-16 | Федеральное государственное бюджетное учреждение науки Тихоокеанский океанологический институт им. В.И. Ильичева Дальневосточного отделения Российской академии наук (ТОИ ДВО РАН) | Способ передачи дискретной информации по каналу связи с многолучевым распространением |
| WO2020034056A1 (zh) * | 2018-08-13 | 2020-02-20 | 深圳市汇顶科技股份有限公司 | 信号发射方法、信号接收方法及装置 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9020170D0 (en) * | 1990-09-14 | 1990-10-24 | Indep Broadcasting Authority | Orthogonal frequency division multiplexing |
| US5263026A (en) * | 1991-06-27 | 1993-11-16 | Hughes Aircraft Company | Maximum likelihood sequence estimation based equalization within a mobile digital cellular receiver |
| DE69427099T2 (de) * | 1993-01-20 | 2001-11-08 | Koninklijke Philips Electronics N.V., Eindhoven | Übertragungssystem mit Taktrückgewinnung |
| US5450456A (en) * | 1993-11-12 | 1995-09-12 | Daimler Benz Ag | Method and arrangement for measuring the carrier frequency deviation in a multi-channel transmission system |
| SE504787C2 (sv) * | 1994-12-14 | 1997-04-28 | Hd Divine Ab | Metod vid OFDM-mottagning för korrigering av frekvens, tidsfönster, samplingsklocka och långsamma fasvariationer |
| US5521908A (en) * | 1995-04-20 | 1996-05-28 | Tellabs Operations Inc. | Method and apparatus for providing reduced complexity echo cancellation in a multicarrier communication system |
-
1996
- 1996-08-12 CA CA002202752A patent/CA2202752A1/en not_active Abandoned
- 1996-08-12 JP JP50909197A patent/JP3859716B2/ja not_active Expired - Lifetime
- 1996-08-12 CN CN96190923A patent/CN1097928C/zh not_active Expired - Lifetime
- 1996-08-12 DE DE69632812T patent/DE69632812T2/de not_active Expired - Fee Related
- 1996-08-12 EP EP96925053A patent/EP0786183B1/en not_active Expired - Lifetime
- 1996-08-12 KR KR1019970702457A patent/KR100457987B1/ko not_active Expired - Fee Related
- 1996-08-12 WO PCT/IB1996/000793 patent/WO1997007620A1/en not_active Ceased
- 1996-08-14 US US08/696,430 patent/US5848107A/en not_active Expired - Lifetime
- 1996-09-26 TW TW085111825A patent/TW315555B/zh active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8290105B2 (en) | 2003-11-11 | 2012-10-16 | Ntt Docomo, Inc. | Signal reception device and method of signal reception timing detection |
| WO2012029378A1 (ja) * | 2010-09-01 | 2012-03-08 | シグナルデザイン株式会社 | Ofdm通信方式の受信方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1097928C (zh) | 2003-01-01 |
| EP0786183B1 (en) | 2004-06-30 |
| US5848107A (en) | 1998-12-08 |
| KR970707663A (ko) | 1997-12-01 |
| CA2202752A1 (en) | 1997-02-27 |
| DE69632812T2 (de) | 2005-06-30 |
| TW315555B (ja) | 1997-09-11 |
| CN1161121A (zh) | 1997-10-01 |
| EP0786183A1 (en) | 1997-07-30 |
| DE69632812D1 (de) | 2004-08-05 |
| WO1997007620A1 (en) | 1997-02-27 |
| JP3859716B2 (ja) | 2006-12-20 |
| KR100457987B1 (ko) | 2005-01-26 |
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