IT8168462A0 - Circuito di recupero della portante di un segnale modulato in ampiezza e fase da segnali numerici - Google Patents
Circuito di recupero della portante di un segnale modulato in ampiezza e fase da segnali numericiInfo
- Publication number
- IT8168462A0 IT8168462A0 IT8168462A IT6846281A IT8168462A0 IT 8168462 A0 IT8168462 A0 IT 8168462A0 IT 8168462 A IT8168462 A IT 8168462A IT 6846281 A IT6846281 A IT 6846281A IT 8168462 A0 IT8168462 A0 IT 8168462A0
- Authority
- IT
- Italy
- Prior art keywords
- amplitude
- phase
- recovery circuit
- signal modulated
- carrier recovery
- Prior art date
Links
- 238000011084 recovery Methods 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
- H04L27/227—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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT68462/81A IT1145719B (it) | 1981-11-12 | 1981-11-12 | Circuito di recupero della partante di un segnale modulato in ampiezza e fase da segnali numerici |
US06/423,086 US4538111A (en) | 1981-11-12 | 1982-09-24 | Circuit recovering the carrier of a signal amplitude and phase modulated by digital signals |
AU88746/82A AU549558B2 (en) | 1981-11-12 | 1982-09-27 | Digital carrier recovery |
JP57188315A JPS5885658A (ja) | 1981-11-12 | 1982-10-28 | デジタル信号によつて振幅および位相変調された信号の搬送波を回復させるための回路 |
EP82110368A EP0079576B1 (en) | 1981-11-12 | 1982-11-10 | Circuit recovering the carrier of a signal amplitude and phase modulated by digital signals |
DE198282110368T DE79576T1 (de) | 1981-11-12 | 1982-11-10 | Schaltung zur traegerrueckgewinnung eines mit digitalen signalen amplituden- und phasermodulierten signals. |
CA000415348A CA1201774A (en) | 1981-11-12 | 1982-11-10 | Circuit for regenerating the carrier of a signal modulated in amplitude and phase by digital signals |
DE8282110368T DE3271199D1 (en) | 1981-11-12 | 1982-11-10 | Circuit recovering the carrier of a signal amplitude and phase modulated by digital signals |
BR8206516A BR8206516A (pt) | 1981-11-12 | 1982-11-10 | Processo e circuito para recuperacao da portadora de um sinal modulado em amplitude e fase por meio de sinais digitais |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT68462/81A IT1145719B (it) | 1981-11-12 | 1981-11-12 | Circuito di recupero della partante di un segnale modulato in ampiezza e fase da segnali numerici |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8168462A0 true IT8168462A0 (it) | 1981-11-12 |
IT1145719B IT1145719B (it) | 1986-11-05 |
Family
ID=11309482
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT68462/81A IT1145719B (it) | 1981-11-12 | 1981-11-12 | Circuito di recupero della partante di un segnale modulato in ampiezza e fase da segnali numerici |
Country Status (8)
Country | Link |
---|---|
US (1) | US4538111A (it) |
EP (1) | EP0079576B1 (it) |
JP (1) | JPS5885658A (it) |
AU (1) | AU549558B2 (it) |
BR (1) | BR8206516A (it) |
CA (1) | CA1201774A (it) |
DE (2) | DE79576T1 (it) |
IT (1) | IT1145719B (it) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4583048A (en) * | 1985-02-26 | 1986-04-15 | Rca Corporation | MSK digital demodulator for burst communications |
US4648100A (en) * | 1985-03-28 | 1987-03-03 | At&T Bell Laboratories | Carrier recovery circuit |
JPS6210950A (ja) * | 1985-07-08 | 1987-01-19 | Nec Corp | デイジタル無線通信方式 |
DE3619744A1 (de) * | 1986-06-12 | 1987-12-17 | Ant Nachrichtentech | Verfahren zum gewinnen eines phasendifferenzsignals |
US4808937A (en) * | 1986-07-15 | 1989-02-28 | Hayes Microcomputer Products, Inc. | Phase-locked loop for a modem |
US4686689A (en) * | 1986-07-24 | 1987-08-11 | Graham-Patten Systems, Inc. | Phase-locked loop circuit |
DE3766614D1 (de) * | 1987-03-10 | 1991-01-17 | Ant Nachrichtentech | Verfahren zum gewinnen eines phasendifferenzsignals. |
DE3707760C1 (de) * | 1987-03-11 | 1988-06-23 | Ant Nachrichtentech | Verfahren zur Taktsynchronisation |
DE3707763C1 (de) * | 1987-03-11 | 1988-06-23 | Ant Nachrichtentech | Taktphasendetektor |
FR2628916B1 (fr) * | 1988-03-15 | 1990-06-29 | Alcatel Thomson Faisceaux | Dispositif de synchronisation en modulation de phase a quatre etats decalee |
ES2051896T3 (es) * | 1989-01-18 | 1994-07-01 | Siemens Ag | Distorsionador digital. |
US5493581A (en) * | 1992-08-14 | 1996-02-20 | Harris Corporation | Digital down converter and method |
US5425057A (en) * | 1994-04-25 | 1995-06-13 | Paff; Thomas M. | Phase demodulation method and apparatus using asynchronous sampling pulses |
FR2779888B1 (fr) | 1998-06-16 | 2000-09-08 | Sgs Thomson Microelectronics | Circuit de detection de verrouillage d'une boucle de synchronisation d'un demodulateur qpsk |
US7239431B2 (en) * | 2001-04-04 | 2007-07-03 | Agere Systems Inc. | System and method for recovering primary channel operation in a facsimile receiver and facsimile machine incorporating the same |
US7024599B2 (en) * | 2001-12-07 | 2006-04-04 | Applied Micro Circuits Corporation | System and method for non-causal channel equalization |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5716546B2 (it) * | 1973-07-12 | 1982-04-06 | ||
FR2368184A1 (fr) * | 1976-10-18 | 1978-05-12 | Ibm France | Systeme de synchronisation de porteuse pour demodulateur de phase coherent |
US4352193A (en) * | 1977-09-01 | 1982-09-28 | Honeywell Inc. | Intended value determination system |
US4404532A (en) * | 1978-09-29 | 1983-09-13 | Communications Satellite Corporation | Modulator having improved bandwidth and power requirements |
US4355402A (en) * | 1978-10-19 | 1982-10-19 | Racal-Milgo, Inc. | Data modem false equilibrium circuit |
JPS55134563A (en) * | 1979-04-05 | 1980-10-20 | Nec Corp | Offset qpsk phase difference detector |
-
1981
- 1981-11-12 IT IT68462/81A patent/IT1145719B/it active
-
1982
- 1982-09-24 US US06/423,086 patent/US4538111A/en not_active Expired - Fee Related
- 1982-09-27 AU AU88746/82A patent/AU549558B2/en not_active Ceased
- 1982-10-28 JP JP57188315A patent/JPS5885658A/ja active Pending
- 1982-11-10 DE DE198282110368T patent/DE79576T1/de active Pending
- 1982-11-10 CA CA000415348A patent/CA1201774A/en not_active Expired
- 1982-11-10 DE DE8282110368T patent/DE3271199D1/de not_active Expired
- 1982-11-10 EP EP82110368A patent/EP0079576B1/en not_active Expired
- 1982-11-10 BR BR8206516A patent/BR8206516A/pt unknown
Also Published As
Publication number | Publication date |
---|---|
US4538111A (en) | 1985-08-27 |
EP0079576A3 (en) | 1984-05-02 |
IT1145719B (it) | 1986-11-05 |
AU8874682A (en) | 1983-05-19 |
EP0079576A2 (en) | 1983-05-25 |
DE79576T1 (de) | 1985-01-31 |
CA1201774A (en) | 1986-03-11 |
BR8206516A (pt) | 1983-09-27 |
EP0079576B1 (en) | 1986-05-14 |
DE3271199D1 (en) | 1986-06-19 |
JPS5885658A (ja) | 1983-05-23 |
AU549558B2 (en) | 1986-01-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19941125 |