ZA913720B - Process for actuation of multi-level digital modulation by a digital signal processor - Google Patents

Process for actuation of multi-level digital modulation by a digital signal processor

Info

Publication number
ZA913720B
ZA913720B ZA913720A ZA913720A ZA913720B ZA 913720 B ZA913720 B ZA 913720B ZA 913720 A ZA913720 A ZA 913720A ZA 913720 A ZA913720 A ZA 913720A ZA 913720 B ZA913720 B ZA 913720B
Authority
ZA
South Africa
Prior art keywords
actuation
signal processor
digital signal
level
modulation
Prior art date
Application number
ZA913720A
Other languages
English (en)
Inventor
Michelangelo Lo Curto
Lo Curto Michelangelo
Marcello Salerno
Salerno Marcello
Original Assignee
Sits Soc It Telecom Siemens
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sits Soc It Telecom Siemens filed Critical Sits Soc It Telecom Siemens
Publication of ZA913720B publication Critical patent/ZA913720B/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/36—Modulator circuits; Transmitter circuits
    • H04L27/365—Modulation using digital generation of the modulated carrier (not including modulation of a digitally generated carrier)

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Amplitude Modulation (AREA)
  • Transmitters (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Control Of Amplification And Gain Control (AREA)
ZA913720A 1990-05-18 1991-05-16 Process for actuation of multi-level digital modulation by a digital signal processor ZA913720B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT20380A IT1240444B (it) 1990-05-18 1990-05-18 Procedimento per l'attuazione della modulazione digitale multilivello mediante un elaboratore di segnali numerici

Publications (1)

Publication Number Publication Date
ZA913720B true ZA913720B (en) 1992-02-26

Family

ID=11166215

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA913720A ZA913720B (en) 1990-05-18 1991-05-16 Process for actuation of multi-level digital modulation by a digital signal processor

Country Status (7)

Country Link
US (1) US5200978A (xx)
EP (1) EP0458385B1 (xx)
AU (1) AU636486B2 (xx)
DE (1) DE69126916D1 (xx)
IT (1) IT1240444B (xx)
NO (1) NO911890L (xx)
ZA (1) ZA913720B (xx)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5838727A (en) * 1991-02-15 1998-11-17 Schlumberger Technology Corporation Method and apparatus for transmitting and receiving digital data over a bandpass channel
US5253271A (en) * 1991-02-15 1993-10-12 Schlumberger Technology Corporation Method and apparatus for quadrature amplitude modulation of digital data using a finite state machine
US5420887A (en) * 1992-03-26 1995-05-30 Pacific Communication Sciences Programmable digital modulator and methods of modulating digital data
US5418818A (en) * 1992-09-22 1995-05-23 Glenayre Electronics, Inc. Digital signal processor exciter
JPH0795667B2 (ja) * 1993-01-18 1995-10-11 日本電気株式会社 トランスバーサルフィルタ
US5778029A (en) * 1993-05-13 1998-07-07 Lockheed Martin Aerospace Corporation Signal conditioner with symbol addressed lookup table producing values which compensate linear and non-linear distortion using transversal filter
EP0693844B1 (en) * 1994-07-20 2005-12-07 Nippon Telegraph And Telephone Corporation Digital quadrature modulator
WO1996011527A1 (en) * 1994-10-07 1996-04-18 Massachusetts Institute Of Technology Quadrature sampling system and hybrid equalizer
FI98020C (fi) * 1995-06-06 1997-03-25 Nokia Mobile Phones Ltd Digitaalisen signaalin modulointimenetelmä ja modulaattori
EP1848171A1 (en) * 1995-07-12 2007-10-24 NEC Corporation Method and apparatus for multi-level quadrature amplitude modulation
EP0760567A3 (de) * 1995-08-30 2000-09-06 Siemens Aktiengesellschaft Digitaler QAM-modulator
JP3658859B2 (ja) * 1996-05-27 2005-06-08 ソニー株式会社 通信方法及び通信装置
EP0849955A3 (en) * 1996-12-17 2000-05-03 Lg Electronics Inc. Device and method for generating a composite color signal with digital QAM
WO1998038775A1 (fr) * 1997-02-27 1998-09-03 Matsushita Electric Industrial Co., Ltd. Modulateur et procede de modulation
US6049573A (en) * 1997-12-11 2000-04-11 Massachusetts Institute Of Technology Efficient polyphase quadrature digital tuner
US6680971B1 (en) * 1998-05-18 2004-01-20 Sarnoff Corporation Passband equalizer for a vestigial sideband signal receiver
DE19946722A1 (de) 1999-09-29 2001-04-05 Infineon Technologies Ag Einrichtung und Verfahren zur spektralen Formung eines Sendesignals in einem Funksender
KR100630143B1 (ko) * 2002-09-30 2006-09-29 삼성전자주식회사 통신 시스템에서 셔플링 데이터의 수신 방법 및 장치
GB0320352D0 (en) 2003-09-01 2003-10-01 Secr Defence Digital modulation waveforms for use in ranging systems
DE202004016686U1 (de) * 2003-10-28 2005-01-20 Astro Strobel Kommunikationssysteme Gmbh QAM-Modulator
GB0612142D0 (en) 2006-06-20 2006-08-02 Secr Defence Spreading modulation spectrum control
FI118875B (fi) * 2006-09-26 2008-04-15 Vacon Oyj Invertterien rinnankytkentä
US11758240B2 (en) 2018-09-13 2023-09-12 Avago Technologies International Sales Pte. Limited Integrated video and data system

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4961206A (en) * 1984-11-22 1990-10-02 Martin Tomlinson Data modem system
US4661948A (en) * 1985-02-12 1987-04-28 Fairchild Semiconductor Corporation Digital quadrature amplitude modulator
GB8505527D0 (en) * 1985-03-04 1985-04-03 Digital Equipment Corp Digitally implemented modulators
JP2510490B2 (ja) * 1985-04-10 1996-06-26 株式会社日立製作所 デイジタル変調器
US4626803A (en) * 1985-12-30 1986-12-02 General Electric Company Apparatus for providing a carrier signal with two digital data streams I-Q modulated thereon
US4808937A (en) * 1986-07-15 1989-02-28 Hayes Microcomputer Products, Inc. Phase-locked loop for a modem
US4748626A (en) * 1987-01-28 1988-05-31 Racal Data Communications Inc. Viterbi decoder with reduced number of data move operations

Also Published As

Publication number Publication date
AU636486B2 (en) 1993-04-29
IT9020380A1 (it) 1991-11-18
DE69126916D1 (de) 1997-08-28
AU7701491A (en) 1991-11-21
IT9020380A0 (it) 1990-05-18
EP0458385A2 (en) 1991-11-27
NO911890D0 (no) 1991-05-15
EP0458385A3 (en) 1993-02-24
US5200978A (en) 1993-04-06
EP0458385B1 (en) 1997-07-23
IT1240444B (it) 1993-12-16
NO911890L (no) 1991-11-19

Similar Documents

Publication Publication Date Title
ZA913720B (en) Process for actuation of multi-level digital modulation by a digital signal processor
AU615872B2 (en) Sample-and-hold digital phase-locked loop for ask signals
SG48053A1 (en) Improved methods for synthesis
EP0235782A3 (en) Apparatus for reproducing a digital signal
AU7906687A (en) Apparatus for generating a clock signal
EP0273196A3 (en) Multi-level pattern detector for a single signal
EP0278702A3 (en) Apparatus for reproducing a digital signal
PL288605A1 (en) Method of obtaining a catalyst of ziegler-natty type
HK188696A (en) Tone signal synthesizer
AU3508189A (en) Apparatus for decoding a digital signal
EG19904A (en) A method for utilization of a sewage
EP0300732A3 (en) Apparatus for reproducing a digital signal
EP0437321A3 (en) Apparatus for recording a digital signal
EP0426034A3 (en) A digital modulating method
EP0453952A3 (en) A process for synthesizing cephalosporin compounds
YU44960B (en) Assembly for processing tone signals of a prescriber's line
AU2006688A (en) Method for coding a digital signal
GB2282303B (en) Process for the digital generation of a complex baseband signal
HUT55641A (en) Process for producing hantaan virus
HU907917D0 (en) Device serving for analogous substitution of a digital setting process
GB9107157D0 (en) Generating convoluted digital signals
GB2238690B (en) Method for the digital transmission of a signal
EP0489223A3 (en) Method for clock rate conversion of a digital signal
GB9007521D0 (en) A signal processor
GB2252006B (en) Tonal conversion method for a picture