ATE91835T1 - Synchronisationseinrichtung fuer verschobene quaternaere phasenumtastung. - Google Patents
Synchronisationseinrichtung fuer verschobene quaternaere phasenumtastung.Info
- Publication number
- ATE91835T1 ATE91835T1 AT89104225T AT89104225T ATE91835T1 AT E91835 T1 ATE91835 T1 AT E91835T1 AT 89104225 T AT89104225 T AT 89104225T AT 89104225 T AT89104225 T AT 89104225T AT E91835 T1 ATE91835 T1 AT E91835T1
- Authority
- AT
- Austria
- Prior art keywords
- synchronization device
- shift
- quaternary phase
- phase shift
- shift keying
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/0054—Detection of the synchronisation error by features other than the received signal transition
- H04L7/0062—Detection of the synchronisation error by features other than the received signal transition detection of error based on data decision error, e.g. Mueller type detection
-
- 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
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0024—Carrier regulation at the receiver end
- H04L2027/0026—Correction of carrier offset
- H04L2027/0038—Correction of carrier offset using an equaliser
-
- 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)
- 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)
- Networks Using Active Elements (AREA)
- Vehicle Body Suspensions (AREA)
- Superheterodyne Receivers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8803334A FR2628916B1 (fr) | 1988-03-15 | 1988-03-15 | Dispositif de synchronisation en modulation de phase a quatre etats decalee |
EP89104225A EP0333044B1 (de) | 1988-03-15 | 1989-03-09 | Synchronisationseinrichtung für verschobene quaternäre Phasenumtastung |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE91835T1 true ATE91835T1 (de) | 1993-08-15 |
Family
ID=9364272
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT89104225T ATE91835T1 (de) | 1988-03-15 | 1989-03-09 | Synchronisationseinrichtung fuer verschobene quaternaere phasenumtastung. |
Country Status (8)
Country | Link |
---|---|
US (1) | US4949357A (de) |
EP (1) | EP0333044B1 (de) |
JP (1) | JPH01273464A (de) |
AT (1) | ATE91835T1 (de) |
CA (1) | CA1312657C (de) |
DE (1) | DE68907619T2 (de) |
ES (1) | ES2042832T3 (de) |
FR (1) | FR2628916B1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5187722A (en) * | 1990-08-13 | 1993-02-16 | At&T Bell Laboratories | Frequency synthesis using fractional frequency multiplication |
JPH04286248A (ja) * | 1991-03-14 | 1992-10-12 | Fujitsu Ltd | ベースバンド遅延検波器 |
US5263026A (en) * | 1991-06-27 | 1993-11-16 | Hughes Aircraft Company | Maximum likelihood sequence estimation based equalization within a mobile digital cellular receiver |
JPH07154439A (ja) * | 1993-11-26 | 1995-06-16 | Nec Eng Ltd | 復調装置 |
US5425057A (en) * | 1994-04-25 | 1995-06-13 | Paff; Thomas M. | Phase demodulation method and apparatus using asynchronous sampling pulses |
CA2171734A1 (en) * | 1994-07-21 | 1996-02-08 | Aaron W. Buchwald | High speed self-adjusting clock recovery circuit with frequency detection |
US5757857A (en) * | 1994-07-21 | 1998-05-26 | The Regents Of The University Of California | High speed self-adjusting clock recovery circuit with frequency detection |
FR2746994B1 (fr) * | 1996-03-29 | 1998-04-30 | Alcatel Telspace | Estimateur et recuperateur de phase robuste pour signaux numeriques affectes notamment de gigue de phase |
US5812604A (en) * | 1996-07-16 | 1998-09-22 | Scientific-Atlanta, Inc. | Constant envelope continuous phase frequency shift key modulation apparatus and method at radio frequencies |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3806815A (en) * | 1973-03-06 | 1974-04-23 | Nasa | Decision feedback loop for tracking a polyphase modulated carrier |
US4027265A (en) * | 1976-06-03 | 1977-05-31 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Unbalanced quadriphase demodulator |
US4092606A (en) * | 1977-06-21 | 1978-05-30 | Lovelace Alan M Acting Adminis | Quadraphase demodulation |
US4314206A (en) * | 1979-12-26 | 1982-02-02 | Motorola Inc. | Noise chopper for preventing false locks in a coherent carrier recovery system |
US4313205A (en) * | 1980-07-07 | 1982-01-26 | Communications Satellite Corporation | Carrier synchronization and symbol synchronization for offset-QPSK burst communications |
NL8102595A (nl) * | 1981-05-27 | 1982-12-16 | Philips Nv | Ontvanger voor hoekgemoduleerde draaggolfsignalen. |
IT1145719B (it) * | 1981-11-12 | 1986-11-05 | Cselt Centro Studi Lab Telecom | Circuito di recupero della partante di un segnale modulato in ampiezza e fase da segnali numerici |
US4847869A (en) * | 1987-12-04 | 1989-07-11 | Motorla, Inc. | Rapid reference acquisition and phase error compensation for radio transmission of data |
-
1988
- 1988-03-15 FR FR8803334A patent/FR2628916B1/fr not_active Expired - Fee Related
-
1989
- 1989-03-09 DE DE89104225T patent/DE68907619T2/de not_active Expired - Fee Related
- 1989-03-09 EP EP89104225A patent/EP0333044B1/de not_active Expired - Lifetime
- 1989-03-09 ES ES89104225T patent/ES2042832T3/es not_active Expired - Lifetime
- 1989-03-09 AT AT89104225T patent/ATE91835T1/de not_active IP Right Cessation
- 1989-03-14 US US07/323,411 patent/US4949357A/en not_active Expired - Fee Related
- 1989-03-14 CA CA000593653A patent/CA1312657C/fr not_active Expired - Fee Related
- 1989-03-15 JP JP1063395A patent/JPH01273464A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
FR2628916B1 (fr) | 1990-06-29 |
EP0333044B1 (de) | 1993-07-21 |
DE68907619D1 (de) | 1993-08-26 |
ES2042832T3 (es) | 1993-12-16 |
US4949357A (en) | 1990-08-14 |
CA1312657C (fr) | 1993-01-12 |
EP0333044A1 (de) | 1989-09-20 |
JPH01273464A (ja) | 1989-11-01 |
FR2628916A1 (fr) | 1989-09-22 |
DE68907619T2 (de) | 1993-11-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
UEP | Publication of translation of european patent specification | ||
REN | Ceased due to non-payment of the annual fee |