CA2000475A1 - Modulateur gmsk numerique a prise en charge des intervalles non entiers entre les bits - Google Patents

Modulateur gmsk numerique a prise en charge des intervalles non entiers entre les bits

Info

Publication number
CA2000475A1
CA2000475A1 CA2000475A CA2000475A CA2000475A1 CA 2000475 A1 CA2000475 A1 CA 2000475A1 CA 2000475 A CA2000475 A CA 2000475A CA 2000475 A CA2000475 A CA 2000475A CA 2000475 A1 CA2000475 A1 CA 2000475A1
Authority
CA
Canada
Prior art keywords
signal
clock signal
input data
rom
bit interval
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.)
Granted
Application number
CA2000475A
Other languages
English (en)
Other versions
CA2000475C (fr
Inventor
Chih-Fei Wang
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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of CA2000475A1 publication Critical patent/CA2000475A1/fr
Application granted granted Critical
Publication of CA2000475C publication Critical patent/CA2000475C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/08—Modifications of modulator to linearise modulation, e.g. by feedback, and clearly applicable to more than one type of modulator
    • 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
    • H04L27/2003—Modulator circuits; Transmitter circuits for continuous phase modulation
    • H04L27/2007—Modulator circuits; Transmitter circuits for continuous phase modulation in which the phase change within each symbol period is constrained
    • H04L27/2017—Modulator circuits; Transmitter circuits for continuous phase modulation in which the phase change within each symbol period is constrained in which the phase changes are non-linear, e.g. generalized and Gaussian minimum shift keying, tamed frequency modulation

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Transmitters (AREA)
  • Holo Graphy (AREA)
  • Amplifiers (AREA)
  • Gyroscopes (AREA)
  • Amplitude Modulation (AREA)
  • Complex Calculations (AREA)
CA002000475A 1988-11-30 1989-10-11 Modulateur gmsk numerique a prise en charge des intervalles non entiers entre les bits Expired - Fee Related CA2000475C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US27808088A 1988-11-30 1988-11-30
US278,080 1988-11-30

Publications (2)

Publication Number Publication Date
CA2000475A1 true CA2000475A1 (fr) 1990-05-31
CA2000475C CA2000475C (fr) 1994-05-03

Family

ID=23063601

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002000475A Expired - Fee Related CA2000475C (fr) 1988-11-30 1989-10-11 Modulateur gmsk numerique a prise en charge des intervalles non entiers entre les bits

Country Status (17)

Country Link
EP (1) EP0371751B1 (fr)
JP (1) JP2797710B2 (fr)
KR (1) KR940000922B1 (fr)
AT (1) ATE128302T1 (fr)
CA (1) CA2000475C (fr)
DE (1) DE68924332T2 (fr)
DK (1) DK101691A (fr)
ES (1) ES2077585T3 (fr)
GR (1) GR3018008T3 (fr)
HK (1) HK1000407A1 (fr)
IE (1) IE69762B1 (fr)
IL (1) IL91945A (fr)
MX (1) MX171396B (fr)
MY (1) MY104453A (fr)
PT (1) PT92434B (fr)
TR (1) TR24950A (fr)
WO (1) WO1990006624A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4036512A1 (de) * 1990-11-16 1992-05-21 Philips Patentverwaltung Digitale schaltungsanordnung zur naeherungsweisen realisierung einer gmsk (gaussian minimum shift keying)-modulation
US5495505A (en) * 1990-12-20 1996-02-27 Motorola, Inc. Increased frequency resolution in a synthesizer
JP2968350B2 (ja) * 1991-01-11 1999-10-25 三菱電機株式会社 直交変調回路
FR2675001B1 (fr) * 1991-04-03 1993-07-30 Matra Communication Procede et dispositif de modulation numerique a composantes en phase et en quadrature et installation de transmission en comportant application.
US5361046A (en) * 1992-12-22 1994-11-01 Hughes Aircraft Company Modulator having fractional sample/symbol time
GB2335122A (en) * 1998-03-05 1999-09-08 Motorola Gmbh Transmitter adapted to reduce adjacent channel interference
CN107171995B (zh) * 2017-02-27 2020-09-29 西安宇飞电子技术有限公司 Gmsk信号生成装置及方法、信号检测装置及方法
CN110798420B (zh) * 2019-11-08 2022-04-19 天津津航计算技术研究所 一种内插倍数可变的gmsk调制实现方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5630340A (en) * 1979-08-20 1981-03-26 Sony Corp Digital signal transmitting method
NL8402318A (nl) * 1984-07-23 1986-02-17 Philips Nv Inrichting voor het genereren van een hoekgemoduleerd draaggolfsignaal van constante amplitude in responsie op datasignalen.

Also Published As

Publication number Publication date
GR3018008T3 (en) 1996-02-29
DE68924332T2 (de) 1996-05-15
EP0371751A2 (fr) 1990-06-06
EP0371751A3 (fr) 1992-01-29
CA2000475C (fr) 1994-05-03
PT92434A (pt) 1990-05-31
KR940000922B1 (ko) 1994-02-04
IL91945A (en) 1994-01-25
IL91945A0 (en) 1990-06-10
HK1000407A1 (en) 1998-03-20
ES2077585T3 (es) 1995-12-01
JPH04502540A (ja) 1992-05-07
MX171396B (es) 1993-10-22
IE893247A1 (en) 1991-06-05
WO1990006624A1 (fr) 1990-06-14
ATE128302T1 (de) 1995-10-15
PT92434B (pt) 1998-04-30
MY104453A (en) 1994-03-31
TR24950A (tr) 1992-07-28
KR900702633A (ko) 1990-12-07
IE893247L (en) 1990-05-30
DK101691D0 (da) 1991-05-28
JP2797710B2 (ja) 1998-09-17
DE68924332D1 (de) 1995-10-26
EP0371751B1 (fr) 1995-09-20
IE69762B1 (en) 1996-10-02
DK101691A (da) 1991-05-28

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Legal Events

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