ES2077585T3 - Modulador gmsk digital con tratamiento de intervalo de bit no entero. - Google Patents

Modulador gmsk digital con tratamiento de intervalo de bit no entero.

Info

Publication number
ES2077585T3
ES2077585T3 ES89312336T ES89312336T ES2077585T3 ES 2077585 T3 ES2077585 T3 ES 2077585T3 ES 89312336 T ES89312336 T ES 89312336T ES 89312336 T ES89312336 T ES 89312336T ES 2077585 T3 ES2077585 T3 ES 2077585T3
Authority
ES
Spain
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.)
Expired - Lifetime
Application number
ES89312336T
Other languages
English (en)
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
Application granted granted Critical
Publication of ES2077585T3 publication Critical patent/ES2077585T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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)
  • Complex Calculations (AREA)
  • Holo Graphy (AREA)
  • Amplifiers (AREA)
  • Gyroscopes (AREA)
  • Amplitude Modulation (AREA)

Abstract

SE UTILIZA UN CIRCUITO DE MODULACION EN UN SISTEMA DE MODULACION GMSK. EL SISTEMA INCLUYE TABLAS DE BUSQUEDA ROM DE UN CANAL I (210) Y UN CANAL Q (212), CADA UNO PROGRAMADO PARA GENERAR UNA FORMA DE ONDA DIGITAL REPRESENTATIVA SOBRE LA BASE DE UNA CORRIENTE DE DATOS DE ENTRADA (250) Y UNA SEÑAL DE RELOJ (252). SE CONVIERTE CADA FORMA DE ONDA DIGITAL EN UNA SEÑAL ANALOGICA PARA LA SUBSIGUIENTE MODULACION DE RADIO FREUENCIA (RF). SE DIRECCIONA CADA ROM MEDIANTE UN CONTADOR DE INTERPOLACIOPN (224) CONTROLADO MEDIANTE UNA SEÑAL DE RELOJ (252), MEDIANTE UN REGISTRO DE CORRIMIENTO DE DATOS (226) QUE RECIBE LOS DATOS DE ENTRADA (250) A UN REGIMEN QUE CORRESPONDE A LA SEÑAL DE RELOJ, Y MEDIANTE UN REGISTRO DE CUADRANTE (230), QUE TAMBIEN RECIBE LAS DATOS DE ENTRADA PARA ESPECIFICAR LA FASE DE LA SEÑAL DE DATOS CON RESPECTO A LA SEÑAL DE RELOJ. ADICIONALMENTE, SE PROVEE UNA SEÑAL (242) QUE INDICA LA LLEGADA DE UN INTERVALO DE BIT NO ENTERO. EN RESPUESTA A ESTA SEÑAL, SE ACTUALIZA EL DIRECCIONAMIENTO ROM CON EL PROPOSITO DE CONTROLAR EL ANGULO DE FASE DEL PORTADOR DE MODULACION.
ES89312336T 1988-11-30 1989-11-28 Modulador gmsk digital con tratamiento de intervalo de bit no entero. Expired - Lifetime ES2077585T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US27808088A 1988-11-30 1988-11-30

Publications (1)

Publication Number Publication Date
ES2077585T3 true ES2077585T3 (es) 1995-12-01

Family

ID=23063601

Family Applications (1)

Application Number Title Priority Date Filing Date
ES89312336T Expired - Lifetime ES2077585T3 (es) 1988-11-30 1989-11-28 Modulador gmsk digital con tratamiento de intervalo de bit no entero.

Country Status (17)

Country Link
EP (1) EP0371751B1 (es)
JP (1) JP2797710B2 (es)
KR (1) KR940000922B1 (es)
AT (1) ATE128302T1 (es)
CA (1) CA2000475C (es)
DE (1) DE68924332T2 (es)
DK (1) DK101691D0 (es)
ES (1) ES2077585T3 (es)
GR (1) GR3018008T3 (es)
HK (1) HK1000407A1 (es)
IE (1) IE69762B1 (es)
IL (1) IL91945A (es)
MX (1) MX171396B (es)
MY (1) MY104453A (es)
PT (1) PT92434B (es)
TR (1) TR24950A (es)
WO (1) WO1990006624A1 (es)

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
DE68924332T2 (de) 1996-05-15
DK101691A (da) 1991-05-28
CA2000475C (en) 1994-05-03
PT92434A (pt) 1990-05-31
IE69762B1 (en) 1996-10-02
EP0371751B1 (en) 1995-09-20
EP0371751A3 (en) 1992-01-29
JPH04502540A (ja) 1992-05-07
DE68924332D1 (de) 1995-10-26
HK1000407A1 (en) 1998-03-20
DK101691D0 (da) 1991-05-28
GR3018008T3 (en) 1996-02-29
KR940000922B1 (ko) 1994-02-04
TR24950A (tr) 1992-07-28
ATE128302T1 (de) 1995-10-15
PT92434B (pt) 1998-04-30
WO1990006624A1 (en) 1990-06-14
IL91945A0 (en) 1990-06-10
EP0371751A2 (en) 1990-06-06
KR900702633A (ko) 1990-12-07
IE893247A1 (en) 1991-06-05
IL91945A (en) 1994-01-25
MY104453A (en) 1994-03-31
JP2797710B2 (ja) 1998-09-17
CA2000475A1 (en) 1990-05-31
IE893247L (en) 1990-05-30
MX171396B (es) 1993-10-22

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