BR8605201A - Circuito de captacao,que impede estados de captacao inadmissiveis e se destina a recuperacao da portadora a partir de um sinal-qam - Google Patents

Circuito de captacao,que impede estados de captacao inadmissiveis e se destina a recuperacao da portadora a partir de um sinal-qam

Info

Publication number
BR8605201A
BR8605201A BR8605201A BR8605201A BR8605201A BR 8605201 A BR8605201 A BR 8605201A BR 8605201 A BR8605201 A BR 8605201A BR 8605201 A BR8605201 A BR 8605201A BR 8605201 A BR8605201 A BR 8605201A
Authority
BR
Brazil
Prior art keywords
captaction
intended
circuit
carrier recovery
qam signal
Prior art date
Application number
BR8605201A
Other languages
English (en)
Inventor
Klaus Boshold
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of BR8605201A publication Critical patent/BR8605201A/pt

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
    • H04L27/38—Demodulator circuits; Receiver circuits
    • H04L27/3818—Demodulator circuits; Receiver circuits using coherent demodulation, i.e. using one or more nominally phase synchronous carriers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
BR8605201A 1985-10-25 1986-10-24 Circuito de captacao,que impede estados de captacao inadmissiveis e se destina a recuperacao da portadora a partir de um sinal-qam BR8605201A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3538032 1985-10-25

Publications (1)

Publication Number Publication Date
BR8605201A true BR8605201A (pt) 1987-07-28

Family

ID=6284471

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8605201A BR8605201A (pt) 1985-10-25 1986-10-24 Circuito de captacao,que impede estados de captacao inadmissiveis e se destina a recuperacao da portadora a partir de um sinal-qam

Country Status (9)

Country Link
EP (1) EP0219863B1 (pt)
JP (1) JPS62102648A (pt)
AR (1) AR241213A1 (pt)
AT (1) ATE71481T1 (pt)
AU (1) AU569199B2 (pt)
BR (1) BR8605201A (pt)
DE (1) DE3683346D1 (pt)
FI (1) FI85927C (pt)
MX (1) MX161448A (pt)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0810879B2 (ja) * 1986-02-20 1996-01-31 富士通株式会社 復調装置
EP0257625B1 (de) * 1986-08-28 1991-12-27 Siemens Aktiengesellschaft Fangschaltung für die Trägerrückgewinnung aus einem QAM-Signal
JPH0626353B2 (ja) * 1987-05-19 1994-04-06 日本電気株式会社 復調装置
DE3881156T2 (de) * 1987-11-06 1993-10-07 Victor Company Of Japan Anordnung zur thermischen Aufzeichnung.
JPH04105974A (ja) * 1990-08-24 1992-04-07 Sony Corp 記録装置
DE4216156C1 (pt) * 1992-05-15 1993-08-19 Ant Nachrichtentechnik Gmbh, 7150 Backnang, De
JPH0721444U (ja) * 1993-09-29 1995-04-18 株式会社芋谷工業 自動車の座席シ−ト用テ−ブル付き収納ケ−ス
GB2303278B (en) * 1995-07-11 2000-04-26 Remo Giovanni Andrea Marzolini Improvements to demodulation systems

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU538047B2 (en) * 1980-08-29 1984-07-26 Plessey Overseas Ltd. Zero-crossing threshold comparator
JPS58221548A (ja) * 1982-06-18 1983-12-23 Fujitsu Ltd 位相同期回路
JPS613553A (ja) * 1984-06-15 1986-01-09 Fujitsu Ltd 搬送波再生回路

Also Published As

Publication number Publication date
AU569199B2 (en) 1988-01-21
FI864317A (fi) 1987-04-26
DE3683346D1 (de) 1992-02-20
AR241213A1 (es) 1992-01-31
EP0219863A3 (en) 1989-03-01
AU6436586A (en) 1987-05-28
JPH0225309B2 (pt) 1990-06-01
MX161448A (es) 1990-09-27
FI864317A0 (fi) 1986-10-24
EP0219863A2 (de) 1987-04-29
JPS62102648A (ja) 1987-05-13
ATE71481T1 (de) 1992-01-15
FI85927B (fi) 1992-02-28
FI85927C (fi) 1992-06-10
EP0219863B1 (de) 1992-01-08

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Legal Events

Date Code Title Description
B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 24/10/2001