DK174787B1 - Multipel fase-demodulator, modem omfattende en multipel fase-demodulator samt system til at konvertere en bitstrøm - Google Patents

Multipel fase-demodulator, modem omfattende en multipel fase-demodulator samt system til at konvertere en bitstrøm Download PDF

Info

Publication number
DK174787B1
DK174787B1 DK198504270A DK427085A DK174787B1 DK 174787 B1 DK174787 B1 DK 174787B1 DK 198504270 A DK198504270 A DK 198504270A DK 427085 A DK427085 A DK 427085A DK 174787 B1 DK174787 B1 DK 174787B1
Authority
DK
Denmark
Prior art keywords
signal
phase
digital
received
modem
Prior art date
Application number
DK198504270A
Other languages
Danish (da)
English (en)
Other versions
DK427085A (da
DK427085D0 (da
Inventor
David N Critchlow
Erich Paneth
Moshe Yehushua
Original Assignee
Interdigital Tech 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.)
Filing date
Publication date
Application filed by Interdigital Tech Corp filed Critical Interdigital Tech Corp
Publication of DK427085D0 publication Critical patent/DK427085D0/da
Publication of DK427085A publication Critical patent/DK427085A/da
Application granted granted Critical
Publication of DK174787B1 publication Critical patent/DK174787B1/da

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/04—Position modulation, i.e. PPM
    • 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
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Communication Control (AREA)
DK198504270A 1985-03-20 1985-09-20 Multipel fase-demodulator, modem omfattende en multipel fase-demodulator samt system til at konvertere en bitstrøm DK174787B1 (da)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US06/713,923 US4644561A (en) 1985-03-20 1985-03-20 Modem for RF subscriber telephone system
US71392385 1985-03-20
ID981034 1987-02-12
IDP98103487A ID20298A (id) 1985-03-20 1987-02-12 MODEM UNTUK SISTEM TELEPON PELANGGAN R.F. (Pecahan dari P-003023)
CA000584023A CA1324642C (fr) 1985-03-20 1988-11-24 Modem pour abonne de systeme de radiotelephonie
CA584023 1988-11-24

Publications (3)

Publication Number Publication Date
DK427085D0 DK427085D0 (da) 1985-09-20
DK427085A DK427085A (da) 1986-09-21
DK174787B1 true DK174787B1 (da) 2003-11-10

Family

ID=32600504

Family Applications (1)

Application Number Title Priority Date Filing Date
DK198504270A DK174787B1 (da) 1985-03-20 1985-09-20 Multipel fase-demodulator, modem omfattende en multipel fase-demodulator samt system til at konvertere en bitstrøm

Country Status (26)

Country Link
US (2) US4644561A (fr)
JP (2) JP2543342B2 (fr)
KR (1) KR910000740B1 (fr)
CN (1) CN1004532B (fr)
AT (1) AT408169B (fr)
AU (2) AU581249B2 (fr)
BE (1) BE903986A (fr)
BR (1) BR8505597A (fr)
CA (2) CA1234873A (fr)
CH (1) CH668675A5 (fr)
DE (1) DE3609394C2 (fr)
DK (1) DK174787B1 (fr)
FI (1) FI86237C (fr)
FR (1) FR2579392B1 (fr)
GB (1) GB2174274B (fr)
HK (1) HK96089A (fr)
ID (1) ID20298A (fr)
IE (1) IE56779B1 (fr)
IL (1) IL76617A (fr)
IN (1) IN165182B (fr)
IT (1) IT1191293B (fr)
MX (1) MX161796A (fr)
NL (1) NL192908C (fr)
NO (1) NO179929C (fr)
SE (1) SE463491B (fr)
SG (1) SG65189G (fr)

Families Citing this family (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0685535B2 (ja) * 1985-10-26 1994-10-26 日本電気株式会社 ４相位相変調符号化装置
US4825448A (en) * 1986-08-07 1989-04-25 International Mobile Machines Corporation Subscriber unit for wireless digital telephone system
US4797900A (en) * 1987-08-31 1989-01-10 Universal Data Systems, Inc. Modem with improved clock control and method therefor
GB2209648B (en) * 1987-09-10 1991-10-23 Ncr Co Modem communication system having main and secondary channels
GB2212699B (en) * 1987-11-16 1992-01-08 Ncr Co Multipoint data modem communication system
US4935927A (en) * 1987-11-20 1990-06-19 International Mobile Machines Corporation Base station emulator
GB8800739D0 (en) * 1988-01-13 1988-02-10 Ncr Co Multipoint modem system having fast synchronization
GB8800740D0 (en) * 1988-01-13 1988-02-10 Ncr Co Data modem receiver
GB8805767D0 (en) * 1988-03-10 1988-04-07 Ncr Co Phase perturbation compensation system
US4953197A (en) * 1988-12-08 1990-08-28 International Mobile Machines Corporation Combination spatial diversity system
US5008900A (en) * 1989-08-14 1991-04-16 International Mobile Machines Corporation Subscriber unit for wireless digital subscriber communication system
GB2266646B (en) * 1989-08-14 1994-06-29 Interdigital Tech Corp A finite impulse response (FIR) chip for use in a subscriber unit for a wireless digital telephone system
US5146473A (en) * 1989-08-14 1992-09-08 International Mobile Machines Corporation Subscriber unit for wireless digital subscriber communication system
US5140613A (en) * 1990-05-25 1992-08-18 Hewlett-Packard Company Baseband modulation system with improved ROM-based digital filter
US5239167A (en) * 1991-04-30 1993-08-24 Ludwig Kipp Checkout system
US5311545A (en) * 1991-06-17 1994-05-10 Hughes Aircraft Company Modem for fading digital channels affected by multipath
CH684860A5 (de) * 1992-04-23 1995-01-13 Haeni Prolectron Ag Verfahren und Schaltungsanordnung zur Uebertragung von binären Datenfolgen.
US5276706A (en) * 1992-05-20 1994-01-04 Hughes Aircraft Company System and method for minimizing frequency offsets between digital communication stations
JP2937624B2 (ja) * 1992-05-29 1999-08-23 日本電気株式会社 ディジタル化直交変調用集積回路とその検査方法
WO1994013094A1 (fr) * 1992-11-25 1994-06-09 France-Telecom Procede de mise en communication automatique en duplex ou semi-duplex de deux equipements a travers une ligne telephonique
US7082106B2 (en) * 1993-01-08 2006-07-25 Multi-Tech Systems, Inc. Computer-based multi-media communications system and method
JP2643762B2 (ja) * 1993-04-12 1997-08-20 日本電気株式会社 ディジタル化直交変調器
US5530702A (en) * 1994-05-31 1996-06-25 Ludwig Kipp System for storage and communication of information
US5511067A (en) * 1994-06-17 1996-04-23 Qualcomm Incorporated Layered channel element in a base station modem for a CDMA cellular communication system
US5548541A (en) * 1994-08-08 1996-08-20 Interstate Electronics Corporation Finite impulse response filter for modulator in digital data transmission system
US5633893A (en) * 1994-09-29 1997-05-27 Ericsson Inc. Digital modulation method with controlled envelope variation
US5765112A (en) * 1995-06-06 1998-06-09 Flash Comm. Inc. Low cost wide area network for data communication using outbound message specifying inbound message time and frequency
US5734963A (en) * 1995-06-06 1998-03-31 Flash Comm, Inc. Remote initiated messaging apparatus and method in a two way wireless data communications network
AU705213B2 (en) * 1995-06-06 1999-05-20 Terion, Inc. Determining propagating and clear frequency in wireless data communications network
US5589844A (en) * 1995-06-06 1996-12-31 Flash Comm, Inc. Automatic antenna tuner for low-cost mobile radio
US5572551A (en) * 1995-09-01 1996-11-05 Motorola, Inc. Carrier loop acquisition for staggered phase shift keying
US5790784A (en) * 1995-12-11 1998-08-04 Delco Electronics Corporation Network for time synchronizing a digital information processing system with received digital information
JPH1117755A (ja) * 1997-06-25 1999-01-22 Futaba Corp 位相判定回路
US6661848B1 (en) * 1998-09-25 2003-12-09 Intel Corporation Integrated audio and modem device
US6625208B2 (en) * 1998-09-25 2003-09-23 Intel Corporation Modem using batch processing of signal samples
US6502138B2 (en) * 1998-09-25 2002-12-31 Intel Corporation Modem with code execution adapted to symbol rate
US6490628B2 (en) * 1998-09-25 2002-12-03 Intel Corporation Modem using a digital signal processor and a signal based command set
DE19946722A1 (de) 1999-09-29 2001-04-05 Infineon Technologies Ag Einrichtung und Verfahren zur spektralen Formung eines Sendesignals in einem Funksender
US6907096B1 (en) * 2000-09-29 2005-06-14 Intel Corporation Data recovery method and apparatus
EP1537709B1 (fr) * 2002-08-28 2018-02-14 Nxp B.V. Procede de generation d'un signal i/q numerique dans un emetteur tdma et modulateur correspondant
ATE394008T1 (de) * 2004-05-28 2008-05-15 Research In Motion Ltd System und verfahren zur einstellung eines audiosignals
DE102004047398B3 (de) * 2004-09-29 2006-02-16 Infineon Technologies Ag Gemeinsamer Detektor für Taktphase und Trägerphase
US7227484B2 (en) * 2005-06-29 2007-06-05 Nxp, B.V. Startup apparatus and technique for a wireless system that uses time domain isolation
CN106789787B (zh) * 2016-12-14 2019-08-30 南京理工大学 一种pcm/dpsk/fm调制解调模块及方法
RU2762287C1 (ru) * 2021-04-15 2021-12-17 федеральное государственное бюджетное образовательное учреждение высшего образования "Самарский государственный технический университет" Цифровой модулятор для преобразователя частоты

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US452311A (en) * 1891-05-12 Piermie linham
US3204029A (en) * 1962-02-21 1965-08-31 Acf Ind Inc High speed synchronous digital data transmission
NL6612366A (fr) * 1966-09-01 1968-03-04
GB1156279A (en) * 1967-12-20 1969-06-25 Standard Telephones Cables Ltd Data Transmission Terminal
US3796956A (en) * 1970-12-23 1974-03-12 Fujitsu Ltd Block synchronization system of multinary codes
US3845412A (en) * 1973-10-12 1974-10-29 Microwave Ass Inc Digital modulate/demodulate system
GB1505342A (en) * 1973-12-05 1978-03-30 Post Office Encoders
US4049909A (en) * 1975-10-29 1977-09-20 Bell Telephone Laboratories, Incorporated Digital modulator
DE2643095A1 (de) * 1976-09-24 1978-03-30 Siemens Ag Impulserzeugungs-schaltungsanordnung
US4087752A (en) * 1977-04-25 1978-05-02 Rockwell International Corporation Digital communications tree searching detection
US4190802A (en) * 1978-08-17 1980-02-26 Motorola, Inc. Digital demodulator for phase shift keyed signals
US4253067A (en) * 1978-12-11 1981-02-24 Rockwell International Corporation Baseband differentially phase encoded radio signal detector
US4268727A (en) * 1979-03-14 1981-05-19 International Telephone And Telegraph Corporation Adaptive digital echo cancellation circuit
US4263670A (en) * 1979-05-11 1981-04-21 Universal Data Systems, Inc. Microprocessor data modem
US4358853A (en) * 1981-01-22 1982-11-09 Codex Corporation Digital modem transmitter
US4425665A (en) * 1981-09-24 1984-01-10 Advanced Micro Devices, Inc. FSK Voiceband modem using digital filters
FR2526617A1 (fr) * 1982-05-10 1983-11-10 Sintra Alcatel Sa Systeme de transmission synchrone de donnees a l'aide d'une porteuse modulee d'amplitude d'enveloppe constante
CA1191905A (fr) * 1982-06-30 1985-08-13 Canadian Patents And Development Limited/Societe Canadienne Des Brevets Et D'exploitation Limitee Modem a spectre etendu
US4523311A (en) * 1983-04-11 1985-06-11 At&T Bell Laboratories Simultaneous transmission of speech and data over an analog channel
JPS601943A (ja) * 1983-06-17 1985-01-08 Kokusai Denshin Denwa Co Ltd <Kdd> 複数の位相偏移変調波を同時に一括して得る変調器
NL8400676A (nl) * 1984-03-02 1985-10-01 Philips Nv Data transmissie systeem.
US4575858A (en) * 1984-04-17 1986-03-11 Dow Joanne B PSK modulation by temporarily increasing frequency to achieve phase change
US4562415A (en) * 1984-06-22 1985-12-31 Motorola, Inc. Universal ultra-precision PSK modulator with time multiplexed modes of varying modulation types

Also Published As

Publication number Publication date
AU2162488A (en) 1988-12-01
IE56779B1 (en) 1991-12-04
AU4767685A (en) 1986-09-25
CH668675A5 (fr) 1989-01-13
KR910000740B1 (ko) 1991-02-06
AU588512B2 (en) 1989-09-14
SE8504663D0 (sv) 1985-10-09
JPS61214844A (ja) 1986-09-24
FI855174A (fi) 1986-09-21
NL192908C (nl) 1998-04-02
IL76617A (en) 1989-12-15
JP2543342B2 (ja) 1996-10-16
DK427085A (da) 1986-09-21
IL76617A0 (en) 1986-02-28
AT408169B (de) 2001-09-25
DE3609394C2 (de) 1998-11-05
KR860007785A (ko) 1986-10-17
FR2579392B1 (fr) 1993-04-09
CA1234873A (fr) 1988-04-05
DE3609394A1 (de) 1986-09-25
IN165182B (fr) 1989-08-26
SG65189G (en) 1990-01-26
DK427085D0 (da) 1985-09-20
GB2174274B (en) 1989-06-21
NO854602L (no) 1986-09-22
JPH08265379A (ja) 1996-10-11
CN86100014A (zh) 1986-12-17
GB8525463D0 (en) 1985-11-20
JP2926311B2 (ja) 1999-07-28
ATA378285A (de) 2001-01-15
NL192908B (nl) 1997-12-01
US4764940A (en) 1988-08-16
CA1324642C (fr) 1993-11-23
CN1004532B (zh) 1989-06-14
BE903986A (fr) 1986-07-07
FI86237B (fi) 1992-04-15
IE852730L (en) 1986-09-20
SE463491B (sv) 1990-11-26
NL8503399A (nl) 1986-10-16
FI855174A0 (fi) 1985-12-30
FI86237C (fi) 1992-07-27
HK96089A (en) 1989-12-08
US4644561A (en) 1987-02-17
FR2579392A1 (fr) 1986-09-26
AU581249B2 (en) 1989-02-16
BR8505597A (pt) 1986-12-16
NO179929B (no) 1996-09-30
NO179929C (no) 1997-01-08
SE8504663L (sv) 1986-09-21
IT8647780A0 (it) 1986-03-17
IT1191293B (it) 1988-02-24
GB2174274A (en) 1986-10-29
ID20298A (id) 1988-11-26
MX161796A (es) 1990-12-28

Similar Documents

Publication Publication Date Title
DK174787B1 (da) Multipel fase-demodulator, modem omfattende en multipel fase-demodulator samt system til at konvertere en bitstrøm
US6791995B1 (en) Multichannel, multimode DOCSIS headend receiver
US4630283A (en) Fast acquisition burst mode spread spectrum communications system with pilot carrier
US20080089399A1 (en) DOCSIS 2.0 SCDMA capable sniffers which can capture legacy DOCSIS bursts as well
US7050419B2 (en) Head end receiver for digital data delivery systems using mixed mode SCDMA and TDMA multiplexing
EP1123610B1 (fr) Modulation numerique de debit variable de symboles
US7769111B2 (en) Detection of large carrier offsets using a timing loop
US8553805B2 (en) Method and apparatus for subband signal demodulation in a transponder satellite communication link containing a component of relayed interference
EP0164749A2 (fr) Système de communication de données à grande vitesse
CA2514886A1 (fr) Appareil de synchronisation de frequence et procede de synchronisation de frequence
KR19990044201A (ko) 디지털 데이터 전송용 장치 및 방법
US6275517B1 (en) Wireless communication apparatus using frequency hopping, and method of controlling the apparatus
NO852765L (no) Fremgangsmaate og apparat for automatisk identifisering av et svarende modem i et nettverk.
KR100965192B1 (ko) 여러 무선 단말기들을 위한 빠른 타이밍 포착
KR100760793B1 (ko) 동기 수신기에서의 직교 및 이득 에러의 정정
JP2877050B2 (ja) 衛星通信システム及び送信装置
JPH08130492A (ja) 無線装置
Meyers UTILIZATION OF FIELD PROGRAMMABLE GATE ARRAYS AND DIGITAL SIGNAL PROCESSING MICROPROCESSORS IN AN ADVANCED PC TT&C SATCOM SYSTEM
WO1999057805A1 (fr) Procede et appareil pour la recuperation de rythme de signaux modules dans la bande laterale residuelle
JPH08274746A (ja) データ送信装置およびデータ受信装置
WO2003028249A1 (fr) Synchronisation tonale sur liste d&#39;appel d&#39;emetteurs recepteurs

Legal Events

Date Code Title Description
PUP Patent expired