CA1042523A - Phase filter for reducing the effects of the noise components altering discrete phase modulated signals - Google Patents

Phase filter for reducing the effects of the noise components altering discrete phase modulated signals

Info

Publication number: CA1042523A
Authority: CA; Canada
Prior art keywords: signal; input; output; filter; phase
Prior art date: 1974-08-30
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.): Expired

Application number

CA232,785A

Other languages

English (en)

French (fr)

Other versions

CA232785S (fr

Inventor

Andre E. Desblache

Thomas E. Stern

Philippe E. Thirion

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

International Business Machines Corp

Original Assignee

International Business Machines Corp

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.)

1974-08-30

Filing date

1975-07-31

Publication date

1978-11-14

1975-07-31 Application filed by International Business Machines Corp filed Critical International Business Machines Corp

1978-11-14 Application granted granted Critical

1978-11-14 Publication of CA1042523A publication Critical patent/CA1042523A/en

Status Expired legal-status Critical Current

Links

230000000694 effects Effects 0.000 title claims abstract description 26
230000010363 phase shift Effects 0.000 claims abstract description 11
239000000306 component Substances 0.000 claims abstract 23
238000012546 transfer Methods 0.000 claims description 34
230000003044 adaptive effect Effects 0.000 claims description 22
230000005540 biological transmission Effects 0.000 claims description 22
238000005070 sampling Methods 0.000 claims description 20
238000001514 detection method Methods 0.000 claims description 19
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238000013461 design Methods 0.000 description 2
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230000008569 process Effects 0.000 description 2
230000009467 reduction Effects 0.000 description 2
VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
241000928106 Alain Species 0.000 description 1
101100536354 Drosophila melanogaster tant gene Proteins 0.000 description 1
AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
239000000654 additive Substances 0.000 description 1
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230000008859 change Effects 0.000 description 1
230000000295 complement effect Effects 0.000 description 1
230000001143 conditioned effect Effects 0.000 description 1
230000003750 conditioning effect Effects 0.000 description 1
238000000605 extraction Methods 0.000 description 1
ORQBXQOJMQIAOY-UHFFFAOYSA-N nobelium Chemical compound [No] ORQBXQOJMQIAOY-UHFFFAOYSA-N 0.000 description 1
230000009466 transformation Effects 0.000 description 1
230000017105 transposition Effects 0.000 description 1
NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 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
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/22—Demodulator circuits; Receiver circuits
- H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H21/00—Adaptive networks
- H03H21/0012—Digital adaptive filters

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Filters That Use Time-Delay Elements (AREA)
Synchronisation In Digital Transmission Systems (AREA)

CA232,785A 1974-08-30 1975-07-31 Phase filter for reducing the effects of the noise components altering discrete phase modulated signals Expired CA1042523A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR7430001A FR2283606A1 (fr)	1974-08-30	1974-08-30	Filtre de phase pour reduire les effets des composantes de bruit affectant les signaux modules en phase par les valeurs discretes

Publications (1)

Publication Number	Publication Date
CA1042523A true CA1042523A (en)	1978-11-14

Family

ID=9142781

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA232,785A Expired CA1042523A (en)	1974-08-30	1975-07-31	Phase filter for reducing the effects of the noise components altering discrete phase modulated signals

Country Status (13)

Country	Link
US (1)	US3972000A (2)
JP (1)	JPS51149743A (2)
BR (1)	BR7505573A (2)
CA (1)	CA1042523A (2)
CH (1)	CH580895A5 (2)
DE (1)	DE2536673B2 (2)
ES (1)	ES440563A1 (2)
FR (1)	FR2283606A1 (2)
GB (1)	GB1500587A (2)
IT (1)	IT1041824B (2)
NL (1)	NL7510209A (2)
SE (1)	SE408001B (2)
ZA (1)	ZA754888B (2)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CH604425A5 (2) *	1975-12-31	1978-09-15	Ibm
DE2727874C3 (de) *	1976-06-25	1979-07-12	Cselt-Centro Studi E Laboratori Telecomunicazioni S.P.A., Turin (Italien)	Verfahren und Entzerrer für die nichtlineare Entzerrung von digitalen Signalen
FR2407621A1 (fr) *	1977-10-27	1979-05-25	Ibm France	Procede et dispositif pour determiner l'ecart de phase dans un systeme utilisant la modulation par saut de phase
FR2407616A1 (fr) *	1977-10-27	1979-05-25	Ibm France	Procede et dispositif de mesure de la pente de la caracteristique de temps de groupe d'un canal de transmission et leur application a la selection automatique d'egaliseur
FR2468258B1 (fr)	1979-10-19	1987-06-26	Cit Alcatel	Circuit de correction des bruits de phase pour un systeme de transmission
GB2134355B (en) *	1983-01-12	1986-03-05	Ncr Co	Circuit for reducing errors in a data receiver
US4672605A (en) *	1984-03-20	1987-06-09	Applied Spectrum Technologies, Inc.	Data and voice communications system
US4893316A (en) *	1985-04-04	1990-01-09	Motorola, Inc.	Digital radio frequency receiver
US5421342A (en) *	1991-01-18	1995-06-06	Mortara Instrument, Inc.	Filter apparatus and method for reducing signal noise using multiple signals obtained from a single source
US5495497A (en) *	1991-09-25	1996-02-27	The United States Of America As Represented By The Secretary Of The Navy	Method and apparatus for suppressing interference from bandspread communication signals
JPH0645515U (ja) *	1992-12-01	1994-06-21	五郎浦壁	弱視者用ライト付き杖
US6238738B1 (en)	1996-08-13	2001-05-29	Libbey-Owens-Ford Co.	Method for depositing titanium oxide coatings on flat glass
DE19731112B4 (de) *	1997-07-19	2009-10-01	Robert Bosch Gmbh	Verfahren und Schaltungsanordnung zur Erkennung von kurzen Impulsen eines digitalen Eingangssignals
JP3190318B2 (ja) *	1999-07-07	2001-07-23	三菱電機株式会社	周波数誤差推定装置および周波数誤差推定方法
KR100791239B1 (ko)	2000-04-24	2008-01-03	록히드 마틴 코포레이션	수동 코히런트 위치지정 시스템 및 방법
IL155513A0 (en) *	2000-10-20	2003-11-23	Lockheed Corp	Civil aviation passive coherent location system and method
KR100824553B1 (ko)	2001-05-04	2008-04-24	록히드 마틴 코포레이션	수동 코히어런트 위치 어플리케이션에서 측정 영역 데이터를 연관시키기 위한 시스템 및 방법
EP1384092B1 (en)	2001-05-04	2011-03-02	Lockheed Martin Corporation	System and method for detection and feature extraction in passive coherent location
US6710743B2 (en)	2001-05-04	2004-03-23	Lockheed Martin Corporation	System and method for central association and tracking in passive coherent location applications
CA2446361C (en)	2001-05-04	2008-11-18	Lockheed Martin Corporation	System and method for wideband pre-detection signal processing for passive coherent location applications
US6703968B2 (en)	2001-05-04	2004-03-09	Lockheed Martin Corporation	System and method for mitigating co-channel interference in passive coherent location applications
US8861627B2 (en) *	2009-07-15	2014-10-14	Fujitsu Limited	Direct mm-wave m-ary quadrature amplitude modulation (QAM) modulator operating in saturated power mode

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2122376B1 (2) *	1971-01-21	1975-01-17	Ibm France
DE2163247C3 (de) *	1971-12-20	1978-03-16	Siemens Ag, 1000 Berlin Und 8000 Muenchen	Vorrichtung zur Beseitigung der in einem Eingangssignal enthaltenen Störsignale
FR2178764B1 (2) *	1972-04-04	1974-08-02	Ibm France

1974
- 1974-08-30 FR FR7430001A patent/FR2283606A1/fr active Granted
1975
- 1975-07-15 US US05/596,557 patent/US3972000A/en not_active Expired - Lifetime
- 1975-07-29 GB GB31635/75A patent/GB1500587A/en not_active Expired
- 1975-07-29 ZA ZA754888A patent/ZA754888B/xx unknown
- 1975-07-31 CA CA232,785A patent/CA1042523A/en not_active Expired
- 1975-08-07 CH CH1030075A patent/CH580895A5/xx not_active IP Right Cessation
- 1975-08-12 IT IT26310/75A patent/IT1041824B/it active
- 1975-08-18 DE DE19752536673 patent/DE2536673B2/de active Granted
- 1975-08-27 JP JP50103116A patent/JPS51149743A/ja active Granted
- 1975-08-28 NL NL7510209A patent/NL7510209A/xx not_active Application Discontinuation
- 1975-08-28 SE SE7509555A patent/SE408001B/xx not_active IP Right Cessation
- 1975-08-29 ES ES440563A patent/ES440563A1/es not_active Expired
- 1975-08-29 BR BR7505573*A patent/BR7505573A/pt unknown

Also Published As

Publication number	Publication date
DE2536673B2 (de)	1976-11-11
SE7509555L (sv)	1976-03-01
ZA754888B (en)	1977-03-30
FR2283606A1 (fr)	1976-03-26
CH580895A5 (2)	1976-10-15
JPS566729B2 (2)	1981-02-13
FR2283606B1 (2)	1978-12-29
US3972000A (en)	1976-07-27
NL7510209A (nl)	1976-03-02
DE2536673A1 (de)	1976-05-13
GB1500587A (en)	1978-02-08
ES440563A1 (es)	1977-06-16
SE408001B (sv)	1979-04-30
JPS51149743A (en)	1976-12-22
IT1041824B (it)	1980-01-10
BR7505573A (pt)	1976-08-03

Publication	Publication Date	Title
CA1042523A (en)	1978-11-14	Phase filter for reducing the effects of the noise components altering discrete phase modulated signals
US4213095A (en)	1980-07-15	Feedforward nonlinear equalization of modulated data signals
US4237554A (en)	1980-12-02	Coefficient tap leakage for fractionally-spaced equalizers
US4097807A (en)	1978-06-27	Automatic equalizing method and system
CA1174745A (en)	1984-09-18	Interference cancellation method and apparatus
US6563868B1 (en)	2003-05-13	Method and apparatus for adaptive equalization in the presence of large multipath echoes
US5142552A (en)	1992-08-25	Method and apparatus for analog D.C. offset cancellation
US4422175A (en)	1983-12-20	Constrained adaptive equalizer
US5414732A (en)	1995-05-09	Adaptive equalizer and method for operation at high symbol rates
US4247940A (en)	1981-01-27	Equalizer for complex data signals
US6055284A (en)	2000-04-25	Symbol timing recovery circuit in digital demodulator
US5933452A (en)	1999-08-03	Timing interpolator in digital demodulator
US3935535A (en)	1976-01-27	Fast equalization acquisition for automatic adaptive digital modem
US5802461A (en)	1998-09-01	Apparatus and method for timing recovery in vestigial sibeband modulation
US4047013A (en)	1977-09-06	Method and apparatus for fast determination of initial transversal equalizer coefficient values
US5539782A (en)	1996-07-23	Digital data receiver
GB1558773A (en)	1980-01-09	Digital filter
US6351293B1 (en)	2002-02-26	Decision directed phase detector
US4071827A (en)	1978-01-31	Transversal type automatic phase and amplitude equalizer
US5115452A (en)	1992-05-19	Phase jitter correction arrangement
US5644595A (en)	1997-07-01	Method and apparatus for an adaptive three tap transversal equalizer for partial-response signaling
US4926499A (en)	1990-05-15	Carrier phase controller for a receiver of phase modulated signals
JPH0654885B2 (ja)	1994-07-20	２進信号のための適応等化器及びそれを操作する方法
US4617537A (en)	1986-10-14	Method for digital quadrature amplitude modulation
US3843942A (en)	1974-10-22	Equalizer for phase modulation communication systems using the instantaneous signal amplitude weighted by signal envelope amplitude distortion as an adjustment control signal