DE69839375D1 - Digitaler Demodulator für hierarchische Übertragung - Google Patents
Digitaler Demodulator für hierarchische ÜbertragungInfo
- Publication number
- DE69839375D1 DE69839375D1 DE69839375T DE69839375T DE69839375D1 DE 69839375 D1 DE69839375 D1 DE 69839375D1 DE 69839375 T DE69839375 T DE 69839375T DE 69839375 T DE69839375 T DE 69839375T DE 69839375 D1 DE69839375 D1 DE 69839375D1
- Authority
- DE
- Germany
- Prior art keywords
- digital demodulator
- hierarchical transmission
- hierarchical
- transmission
- demodulator
- 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.)
- Expired - Lifetime
Links
- 230000005540 biological transmission Effects 0.000 title 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/22—Demodulator circuits; Receiver circuits
- H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
- H04L27/2332—Demodulator circuits; Receiver circuits using non-coherent demodulation using a non-coherent carrier
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0024—Carrier regulation at the receiver end
- H04L2027/0026—Correction of carrier offset
- H04L2027/003—Correction of carrier offset at baseband only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0044—Control loops for carrier regulation
- H04L2027/0053—Closed loops
- H04L2027/0057—Closed loops quadrature phase
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0044—Control loops for carrier regulation
- H04L2027/0071—Control of loops
- H04L2027/0079—Switching between loops
- H04L2027/0081—Switching between loops between loops of different bandwidths
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0083—Signalling arrangements
- H04L2027/0089—In-band signals
- H04L2027/0093—Intermittant signals
- H04L2027/0095—Intermittant signals in a preamble or similar structure
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP34187097A JP3392028B2 (ja) | 1997-11-28 | 1997-11-28 | 階層化伝送ディジタル復調器 |
JP34187097 | 1997-11-28 | ||
PCT/JP1998/005379 WO1999029075A1 (fr) | 1997-11-28 | 1998-11-30 | Demodulateur numerique pour transmission hierarchisee |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69839375D1 true DE69839375D1 (de) | 2008-05-29 |
DE69839375T2 DE69839375T2 (de) | 2008-07-17 |
Family
ID=18349392
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69839375T Expired - Lifetime DE69839375T2 (de) | 1997-11-28 | 1998-11-30 | Digitaler Demodulator für hierarchische Übertragung |
DE1054537T Pending DE1054537T1 (de) | 1997-11-28 | 1998-11-30 | Digitaler demodulator für hierarchische übertragung |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1054537T Pending DE1054537T1 (de) | 1997-11-28 | 1998-11-30 | Digitaler demodulator für hierarchische übertragung |
Country Status (7)
Country | Link |
---|---|
US (1) | US6678336B1 (de) |
EP (1) | EP1054537B1 (de) |
JP (1) | JP3392028B2 (de) |
CN (1) | CN1107399C (de) |
CA (1) | CA2311349C (de) |
DE (2) | DE69839375T2 (de) |
WO (1) | WO1999029075A1 (de) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3634187B2 (ja) * | 1999-04-23 | 2005-03-30 | 株式会社ケンウッド | Bsデジタル放送受信機。 |
JP3438700B2 (ja) * | 2000-05-24 | 2003-08-18 | 株式会社ケンウッド | Bsディジタル放送受信装置及びbsディジタル放送受信方法 |
DE10046575B4 (de) * | 2000-09-20 | 2005-03-10 | Siemens Ag | Verfahren zur Frequenzakquisition, insbesondere zur Initialfrequenzakquisition, einer mobilen Kommunikationseinrichtung |
US7778365B2 (en) | 2001-04-27 | 2010-08-17 | The Directv Group, Inc. | Satellite TWTA on-line non-linearity measurement |
US7822154B2 (en) | 2001-04-27 | 2010-10-26 | The Directv Group, Inc. | Signal, interference and noise power measurement |
US7173981B1 (en) * | 2001-04-27 | 2007-02-06 | The Directv Group, Inc. | Dual layer signal processing in a layered modulation digital signal system |
US7471735B2 (en) * | 2001-04-27 | 2008-12-30 | The Directv Group, Inc. | Maximizing power and spectral efficiencies for layered and conventional modulations |
US8005035B2 (en) * | 2001-04-27 | 2011-08-23 | The Directv Group, Inc. | Online output multiplexer filter measurement |
US7483505B2 (en) * | 2001-04-27 | 2009-01-27 | The Directv Group, Inc. | Unblind equalizer architecture for digital communication systems |
US7583728B2 (en) * | 2002-10-25 | 2009-09-01 | The Directv Group, Inc. | Equalizers for layered modulated and other signals |
US7209524B2 (en) * | 2001-04-27 | 2007-04-24 | The Directv Group, Inc. | Layered modulation for digital signals |
US7423987B2 (en) | 2001-04-27 | 2008-09-09 | The Directv Group, Inc. | Feeder link configurations to support layered modulation for digital signals |
US7639759B2 (en) * | 2001-04-27 | 2009-12-29 | The Directv Group, Inc. | Carrier to noise ratio estimations from a received signal |
US7502430B2 (en) * | 2001-04-27 | 2009-03-10 | The Directv Group, Inc. | Coherent averaging for measuring traveling wave tube amplifier nonlinearity |
US7245671B1 (en) * | 2001-04-27 | 2007-07-17 | The Directv Group, Inc. | Preprocessing signal layers in a layered modulation digital signal system to use legacy receivers |
AR040366A1 (es) * | 2002-07-01 | 2005-03-30 | Hughes Electronics Corp | Mejora del rendimiento de la modulacion jerarquica por desplazamiento de ocho fases (8psk) |
WO2004006455A1 (en) * | 2002-07-03 | 2004-01-15 | The Directv Group, Inc. | Method and apparatus for layered modulation |
AU2003301717A1 (en) * | 2002-10-25 | 2004-05-25 | The Directv Group, Inc. | Lower complexity layered modulation signal processor |
US7474710B2 (en) * | 2002-10-25 | 2009-01-06 | The Directv Group, Inc. | Amplitude and phase matching for layered modulation reception |
US7502429B2 (en) * | 2003-10-10 | 2009-03-10 | The Directv Group, Inc. | Equalization for traveling wave tube amplifier nonlinearity measurements |
US7499696B2 (en) * | 2003-11-26 | 2009-03-03 | Delphi Technologies, Inc. | Method to optimize hierarchical modulation for a diversity system |
JP3930525B2 (ja) * | 2005-11-21 | 2007-06-13 | シャープ株式会社 | デジタル復調装置、その制御方法、その制御用プログラム、その制御用プログラムを記録した記録媒体及びデジタル受信装置 |
JP3917633B1 (ja) * | 2005-11-21 | 2007-05-23 | シャープ株式会社 | デジタル復調装置、その制御方法、デジタル復調装置用プログラム、デジタル復調装置用プログラムを記録した記録媒体及びデジタル受信装置 |
US7912111B2 (en) * | 2005-12-29 | 2011-03-22 | Trimble Navigation Ltd | Dynamic switching of carrier tracking loops without loss of tracking information |
CN101190137B (zh) * | 2006-11-27 | 2011-06-22 | 深圳迈瑞生物医疗电子股份有限公司 | 用于超声成像系统的实时数字正交解调方法与装置 |
JP4229180B2 (ja) * | 2006-12-08 | 2009-02-25 | ソニー株式会社 | 受信装置、制御方法、及びプログラム |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS556965A (en) * | 1978-06-30 | 1980-01-18 | Toshiba Corp | Carrier wave reproducing device |
JP2724145B2 (ja) * | 1987-03-24 | 1998-03-09 | 株式会社日立製作所 | 搬送波再生装置 |
CA1332450C (en) * | 1987-06-23 | 1994-10-11 | Shousei Yoshida | Carrier-to-noise detector for digital transmission systems |
JPH0748750B2 (ja) * | 1988-11-15 | 1995-05-24 | 日本電気株式会社 | 同期復調装置 |
DE69233183D1 (de) * | 1991-03-27 | 2003-10-02 | Matsushita Electric Ind Co Ltd | Signalübertragungssystem |
JP3304996B2 (ja) * | 1991-11-19 | 2002-07-22 | 株式会社東芝 | 搬送波再生回路 |
US5301206A (en) * | 1992-02-07 | 1994-04-05 | Victor Company Of Japan, Inc. | Spread spectrum communication system |
US5363408A (en) * | 1992-03-24 | 1994-11-08 | General Instrument Corporation | Mode selective quadrature amplitude modulation communication system |
US5363375A (en) * | 1993-07-30 | 1994-11-08 | Bell Communications Research, Inc. | Method and apparatus for synchronizing timing among radio ports in wireless communications systems using hierarchical scheme |
JP3139909B2 (ja) * | 1994-03-15 | 2001-03-05 | 株式会社東芝 | 階層的直交周波数多重伝送方式および送受信装置 |
KR0165507B1 (ko) * | 1996-01-09 | 1999-03-20 | 김광호 | 기준신호를 이용한 등화방법과 등화기 |
JP3253524B2 (ja) * | 1996-05-28 | 2002-02-04 | 日本放送協会 | ディジタル伝送方法および送信、受信装置 |
-
1997
- 1997-11-28 JP JP34187097A patent/JP3392028B2/ja not_active Expired - Lifetime
-
1998
- 1998-11-30 DE DE69839375T patent/DE69839375T2/de not_active Expired - Lifetime
- 1998-11-30 US US09/554,669 patent/US6678336B1/en not_active Expired - Lifetime
- 1998-11-30 DE DE1054537T patent/DE1054537T1/de active Pending
- 1998-11-30 WO PCT/JP1998/005379 patent/WO1999029075A1/ja active IP Right Grant
- 1998-11-30 CA CA002311349A patent/CA2311349C/en not_active Expired - Lifetime
- 1998-11-30 CN CN98811575.1A patent/CN1107399C/zh not_active Expired - Lifetime
- 1998-11-30 EP EP98955991A patent/EP1054537B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CN1107399C (zh) | 2003-04-30 |
JPH11163957A (ja) | 1999-06-18 |
EP1054537B1 (de) | 2008-04-16 |
CA2311349C (en) | 2008-04-08 |
JP3392028B2 (ja) | 2003-03-31 |
EP1054537A4 (de) | 2005-09-21 |
EP1054537A1 (de) | 2000-11-22 |
CA2311349A1 (en) | 1999-06-10 |
US6678336B1 (en) | 2004-01-13 |
WO1999029075A1 (fr) | 1999-06-10 |
CN1280731A (zh) | 2001-01-17 |
DE1054537T1 (de) | 2001-06-07 |
DE69839375T2 (de) | 2008-07-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
R082 | Change of representative |
Ref document number: 1054537 Country of ref document: EP Representative=s name: LEINWEBER & ZIMMERMANN, 80331 MUENCHEN, DE |