MX9301465A - Metodo y aparato para la demodulacion de respuesta parcial. - Google Patents
Metodo y aparato para la demodulacion de respuesta parcial.Info
- Publication number
- MX9301465A MX9301465A MX9301465A MX9301465A MX9301465A MX 9301465 A MX9301465 A MX 9301465A MX 9301465 A MX9301465 A MX 9301465A MX 9301465 A MX9301465 A MX 9301465A MX 9301465 A MX9301465 A MX 9301465A
- Authority
- MX
- Mexico
- Prior art keywords
- demodulation
- partial response
- digital
- channel
- demultiplexed
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
- H04L25/40—Transmitting circuits; Receiving circuits
- H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
- H04L25/497—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems by correlative coding, e.g. partial response coding or echo modulation coding transmitters and receivers for partial response systems
-
- 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
- H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
- H04L27/2271—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals
- H04L27/2273—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals associated with quadrature demodulation, e.g. Costas loop
-
- 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
- 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
- H04L2027/0046—Open loops
- H04L2027/0051—Harmonic tracking
-
- 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
- H04L2027/0063—Elements of loops
- H04L2027/0067—Phase error detectors
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Time-Division Multiplex Systems (AREA)
Abstract
Un sistema de comunicación de audio digital incluye un esquema de modulación digital, el cual utiliza de una manera eficiente la amplitud de banda y el espaciamiento de canal de un sistema de televisión por cable. Una corriente de bit digital de 30 canales se desmultiplexa en seis grupos de cinco canales.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/851,445 US5214390A (en) | 1992-03-16 | 1992-03-16 | Method and apparatus for partial response demodulation |
Publications (1)
Publication Number | Publication Date |
---|---|
MX9301465A true MX9301465A (es) | 1994-07-29 |
Family
ID=25310784
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX9301465A MX9301465A (es) | 1992-03-16 | 1993-03-16 | Metodo y aparato para la demodulacion de respuesta parcial. |
Country Status (5)
Country | Link |
---|---|
US (1) | US5214390A (es) |
CN (1) | CN1081044A (es) |
AU (1) | AU3804093A (es) |
MX (1) | MX9301465A (es) |
WO (1) | WO1993019520A1 (es) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5555016A (en) * | 1993-07-06 | 1996-09-10 | Plessey Semiconductors Limited | Video signal distribution system |
US5461646A (en) * | 1993-12-29 | 1995-10-24 | Tcsi Corporation | Synchronization apparatus for a diversity receiver |
US5479453A (en) * | 1993-12-29 | 1995-12-26 | Tsci Corporation | Wireless telecommunication digital receiver |
EP0737380B1 (en) * | 1993-12-29 | 2003-10-22 | Atmel Corporation | A wireless digital synchronized diversity receiver |
US6195399B1 (en) * | 1994-03-28 | 2001-02-27 | Ericsson Inc. | Method and apparatus for converting a wideband if signal to a complex (quadrature) baseband signal |
US5606576A (en) * | 1995-01-23 | 1997-02-25 | Northrop Grumman Corporation | Adaptive mode control system for AM compatible digital broadcast |
US5873048A (en) * | 1995-07-27 | 1999-02-16 | Lucent Technologies Inc. | Locator and method for a wireless communication system |
US6230203B1 (en) | 1995-10-20 | 2001-05-08 | Scientific-Atlanta, Inc. | System and method for providing statistics for flexible billing in a cable environment |
US5966163A (en) | 1995-10-20 | 1999-10-12 | Scientific-Atlanta, Inc. | Providing constant bit rate upstream data transport in a two way cable system by scheduling preemptive grants for upstream data slots using selected fields of a plurality of grant fields |
US5640425A (en) * | 1995-12-26 | 1997-06-17 | Golden Bridge Technology, Inc. | Fast-acting costas loop |
US7028088B1 (en) | 1996-04-03 | 2006-04-11 | Scientific-Atlanta, Inc. | System and method for providing statistics for flexible billing in a cable environment |
US5822678A (en) * | 1996-08-29 | 1998-10-13 | Ericsson, Inc. | CATV network for transport of radio frequency signals |
US5901350A (en) * | 1996-09-30 | 1999-05-04 | Fairchild Semiconductor Corporation | Low distortion large swing frequency down coverter filter amplifier circuit |
US6308328B1 (en) | 1997-01-17 | 2001-10-23 | Scientific-Atlanta, Inc. | Usage statistics collection for a cable data delivery system |
US6272150B1 (en) | 1997-01-17 | 2001-08-07 | Scientific-Atlanta, Inc. | Cable modem map display for network management of a cable data delivery system |
US6286058B1 (en) | 1997-04-14 | 2001-09-04 | Scientific-Atlanta, Inc. | Apparatus and methods for automatically rerouting packets in the event of a link failure |
NL1017191C2 (nl) * | 2001-01-25 | 2002-07-30 | Univ Delft Tech | Kwadratuurmodulator en -demodulator. |
US6801577B2 (en) * | 2002-01-24 | 2004-10-05 | Broadcom Corporation | Low voltage swing pad driver and receiver |
GB0614543D0 (en) * | 2006-07-21 | 2006-08-30 | Vodafone Plc | RF Distribution |
JP2009294379A (ja) * | 2008-06-04 | 2009-12-17 | Toshiba Mobile Display Co Ltd | 液晶表示装置 |
CN102215189B (zh) | 2010-04-02 | 2014-12-17 | 富士通株式会社 | 滤波器、相干接收机装置和相干接收方法 |
US8798670B2 (en) * | 2012-08-03 | 2014-08-05 | Blackberry Limited | Mobile wireless communications device with DDPDT RF switch and related methods |
JP6598563B2 (ja) * | 2015-08-05 | 2019-10-30 | ルネサスエレクトロニクス株式会社 | 信号変換器及び制御装置 |
CA3012697A1 (en) * | 2016-02-08 | 2017-08-17 | Witricity Corporation | Pwm capacitor control |
US11000997B2 (en) | 2018-07-23 | 2021-05-11 | Xerox Corporation | System and method for preserving valve member travel in a multi-nozzle extruder |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2546001B1 (fr) * | 1983-05-10 | 1985-07-05 | Thomson Csf | Demodulateur de signaux, a enveloppe constante et phase continue, modules angulairement par un train de symboles binaires |
US4886395A (en) * | 1987-07-02 | 1989-12-12 | Standard Oil Company | Pipeline to riser connection method and apparatus |
-
1992
- 1992-03-16 US US07/851,445 patent/US5214390A/en not_active Expired - Lifetime
-
1993
- 1993-03-16 WO PCT/US1993/002240 patent/WO1993019520A1/en active Application Filing
- 1993-03-16 MX MX9301465A patent/MX9301465A/es unknown
- 1993-03-16 CN CN93105489A patent/CN1081044A/zh active Pending
- 1993-03-16 AU AU38040/93A patent/AU3804093A/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
CN1081044A (zh) | 1994-01-19 |
WO1993019520A1 (en) | 1993-09-30 |
AU3804093A (en) | 1993-10-21 |
US5214390A (en) | 1993-05-25 |
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