DE2716979A1 - Schaltungsanordnung fuer die korrektur von phasenjitter und frequenzversetzungen des in einem quadratur-amplituden-modulation-empfaenger empfangenen signals - Google Patents
Schaltungsanordnung fuer die korrektur von phasenjitter und frequenzversetzungen des in einem quadratur-amplituden-modulation-empfaenger empfangenen signalsInfo
- Publication number
- DE2716979A1 DE2716979A1 DE19772716979 DE2716979A DE2716979A1 DE 2716979 A1 DE2716979 A1 DE 2716979A1 DE 19772716979 DE19772716979 DE 19772716979 DE 2716979 A DE2716979 A DE 2716979A DE 2716979 A1 DE2716979 A1 DE 2716979A1
- Authority
- DE
- Germany
- Prior art keywords
- phase
- circuit arrangement
- jitter
- signal
- circuits
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
Links
- 238000006073 displacement reaction Methods 0.000 title 1
- 230000003111 delayed effect Effects 0.000 claims description 3
- 230000010363 phase shift Effects 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/678,431 US4054838A (en) | 1976-04-19 | 1976-04-19 | QAM phase jitter and frequency offset correction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2716979A1 true DE2716979A1 (de) | 1977-10-20 |
Family
ID=24722760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19772716979 Ceased DE2716979A1 (de) | 1976-04-19 | 1977-04-16 | Schaltungsanordnung fuer die korrektur von phasenjitter und frequenzversetzungen des in einem quadratur-amplituden-modulation-empfaenger empfangenen signals |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4054838A (enExample) |
| JP (1) | JPS52127706A (enExample) |
| AU (1) | AU500864B2 (enExample) |
| CA (1) | CA1075317A (enExample) |
| DE (1) | DE2716979A1 (enExample) |
| FR (1) | FR2349244A1 (enExample) |
| GB (1) | GB1576734A (enExample) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3012905A1 (de) * | 1979-04-06 | 1980-10-09 | Ricoh Kk | Rueckkopplungs-phase-lock-schleife |
| DE3040685A1 (de) * | 1979-11-06 | 1981-05-14 | Western Electric Co., Inc., 10038 New York, N.Y. | Phasenzitterkompensation unter verwendung periodischer, harmonisch in beziehung stehender signalkomponeten |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1150427A (en) * | 1980-02-21 | 1983-07-19 | Keith G. Wright | Universal demultiplexer |
| US4675614A (en) * | 1982-10-20 | 1987-06-23 | Rockwell International Corporation | Phase difference measurement system |
| GB2148669A (en) * | 1983-10-21 | 1985-05-30 | Philips Electronic Associated | Data receiver |
| US4538120A (en) * | 1983-12-19 | 1985-08-27 | Rca Corporation | Carrier recovery loop for reception of quadraphase shift keyed signals |
| US4571550A (en) * | 1984-06-22 | 1986-02-18 | Rockwell International Corporation | QAM Demodulator carrier recovery loop using n-m LSB's |
| US4574244A (en) * | 1984-06-22 | 1986-03-04 | Rockwell International Corporation | QAM Demodulator automatic quadrature loop using n-m LSB's |
| USH2069H1 (en) | 1984-12-21 | 2003-07-01 | The United States Of America As Represented By The Secretary Of The Navy | Signal processor |
| FR2593341B1 (fr) * | 1986-01-20 | 1988-03-04 | Alcatel Thomson Faisceaux | Dispositif de recuperation de rythme |
| GB2186139A (en) * | 1986-01-30 | 1987-08-05 | Plessey Co Plc | Phase and quadrature receiver |
| US5115454A (en) * | 1987-05-12 | 1992-05-19 | Kucar Andy D | Method and apparatus for carrier synchronization and data detection |
| JP2552927B2 (ja) * | 1990-01-26 | 1996-11-13 | 三菱電機株式会社 | π/4シフトQPSK信号の復調装置 |
| JPH03278745A (ja) * | 1990-03-28 | 1991-12-10 | Matsushita Electric Ind Co Ltd | 周波数偏差検出装置 |
| JP2611623B2 (ja) * | 1993-06-08 | 1997-05-21 | 日本電気株式会社 | 自動周波数制御装置 |
| US5596606A (en) * | 1994-04-05 | 1997-01-21 | Scientific-Atlanta, Inc. | Synchronous detector and methods for synchronous detection |
| RU2136115C1 (ru) * | 1998-06-11 | 1999-08-27 | В/ч 25714 | Устройство демодуляции многопозиционных сигналов |
| US7006457B2 (en) * | 2001-08-30 | 2006-02-28 | Thomson Licensing | Modem front-end apparatus and method |
| US20030103582A1 (en) * | 2001-12-04 | 2003-06-05 | Linsky Stuart T. | Selective reed-solomon error correction decoders in digital communication systems |
| US7746186B2 (en) * | 2008-01-29 | 2010-06-29 | Analog Devices, Inc. | Wideband quadrature imbalance compensation system and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3813598A (en) * | 1971-08-16 | 1974-05-28 | Rexon Electronics Inc | Single tone carrier recovery system |
| US3849730A (en) * | 1973-06-20 | 1974-11-19 | Bell Telephone Labor Inc | Carrier recovery in vestigial sideband data receivers |
| DE2503595A1 (de) * | 1974-01-30 | 1975-07-31 | Western Electric Co | Datenempfaenger fuer synchrone quadraturamplituden-modulierte datensignale |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3701023A (en) * | 1971-06-29 | 1972-10-24 | Ibm | Phase jitter extraction method for data transmission systems |
| US3800228A (en) * | 1972-02-23 | 1974-03-26 | Honeywell Inf Systems | Phase jitter compensator |
-
1976
- 1976-04-19 US US05/678,431 patent/US4054838A/en not_active Expired - Lifetime
-
1977
- 1977-04-13 AU AU24239/77A patent/AU500864B2/en not_active Expired
- 1977-04-13 CA CA276,077A patent/CA1075317A/en not_active Expired
- 1977-04-15 GB GB15691/77A patent/GB1576734A/en not_active Expired
- 1977-04-16 DE DE19772716979 patent/DE2716979A1/de not_active Ceased
- 1977-04-19 FR FR7711647A patent/FR2349244A1/fr active Granted
- 1977-04-19 JP JP4510077A patent/JPS52127706A/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3813598A (en) * | 1971-08-16 | 1974-05-28 | Rexon Electronics Inc | Single tone carrier recovery system |
| US3849730A (en) * | 1973-06-20 | 1974-11-19 | Bell Telephone Labor Inc | Carrier recovery in vestigial sideband data receivers |
| DE2503595A1 (de) * | 1974-01-30 | 1975-07-31 | Western Electric Co | Datenempfaenger fuer synchrone quadraturamplituden-modulierte datensignale |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3012905A1 (de) * | 1979-04-06 | 1980-10-09 | Ricoh Kk | Rueckkopplungs-phase-lock-schleife |
| DE3040685A1 (de) * | 1979-11-06 | 1981-05-14 | Western Electric Co., Inc., 10038 New York, N.Y. | Phasenzitterkompensation unter verwendung periodischer, harmonisch in beziehung stehender signalkomponeten |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2349244B1 (enExample) | 1981-06-19 |
| JPS52127706A (en) | 1977-10-26 |
| FR2349244A1 (fr) | 1977-11-18 |
| GB1576734A (en) | 1980-10-15 |
| CA1075317A (en) | 1980-04-08 |
| AU500864B2 (en) | 1979-06-07 |
| US4054838A (en) | 1977-10-18 |
| AU2423977A (en) | 1978-10-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| 8131 | Rejection |