MX9703504A - Modulador de espectro extendido. - Google Patents

Modulador de espectro extendido.

Info

Publication number
MX9703504A
MX9703504A MX9703504A MX9703504A MX9703504A MX 9703504 A MX9703504 A MX 9703504A MX 9703504 A MX9703504 A MX 9703504A MX 9703504 A MX9703504 A MX 9703504A MX 9703504 A MX9703504 A MX 9703504A
Authority
MX
Mexico
Prior art keywords
band
modulating signal
limited
disclosed
signal
Prior art date
Application number
MX9703504A
Other languages
English (en)
Other versions
MXPA97003504A (es
Inventor
Yoshikazu Nara
Original Assignee
Matsushita Electric Ind Co Ltd
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 Matsushita Electric Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Publication of MXPA97003504A publication Critical patent/MXPA97003504A/es
Publication of MX9703504A publication Critical patent/MX9703504A/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Amplitude Modulation (AREA)

Abstract

Se describe un sistema y método para producir una señal de informacion modulada, limitada en la banda. Se describe un generador de la señal de modulacion, el cual provee una señal de modulacion limitada en la banda que tiene un ancho de banda predeterminado y corte característico. Se describe un sistema y método modulador para producir una señal de informacion modulada, limitada en la banda al combinar una señal de informacion con la señal de modulacion limitada en la banda. Se describe un generador de la señal de modulacion y método, el cual genera una señal de modulacion limitada en la banda como una serie de valores de la señal de modulacion a intervalos periodicos. Se describe un generador de la señal de modulacion adicional el cual provee una señal de modulacion limitada en la banda mediante la generacion de frecuencias y la combinacion de ellas a amplitudes y fases apropiadas para sintetizar una señal de modulacion limitada en la banda. Se describe un generador de señal de modulacion adicional para generar una señal de modulacion limitada en la banda al generar una señal de dominio en el tiempo que tiene un espectro de frecuencia predeterminado y al emitir secuencialmente una representacion digital de aquella señal de dominio en el tiempo.
MX9703504A 1996-05-16 1997-05-13 Modulador de espectro extendido. MX9703504A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08648813 1996-05-16
US08/648,813 US5936998A (en) 1996-05-16 1996-05-16 Spread spectrum modulator

Publications (2)

Publication Number Publication Date
MXPA97003504A MXPA97003504A (es) 1998-04-01
MX9703504A true MX9703504A (es) 1998-04-30

Family

ID=24602350

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9703504A MX9703504A (es) 1996-05-16 1997-05-13 Modulador de espectro extendido.

Country Status (7)

Country Link
US (1) US5936998A (es)
EP (1) EP0808032A3 (es)
JP (1) JPH1070487A (es)
KR (1) KR100373523B1 (es)
CN (1) CN1110151C (es)
CA (1) CA2205325A1 (es)
MX (1) MX9703504A (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7974580B2 (en) * 2007-08-28 2011-07-05 Qualcomm Incorporated Apparatus and method for modulating an amplitude, phase or both of a periodic signal on a per cycle basis
WO2018161355A1 (zh) * 2017-03-10 2018-09-13 华为技术有限公司 信号发射方法、信号接收方法、相关设备及系统

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4361890A (en) * 1958-06-17 1982-11-30 Gte Products Corporation Synchronizing system
US4559633A (en) * 1982-10-22 1985-12-17 Hitachi, Ltd. Spread spectrum system
JPH0810840B2 (ja) * 1989-03-24 1996-01-31 宣夫 御子柴 スペクトラム拡散通信装置
US5136614A (en) * 1989-05-08 1992-08-04 Sanyo Electric Co., Ltd. Spread spectrum communication system
US5377225A (en) * 1993-10-19 1994-12-27 Hughes Aircraft Company Multiple-access noise rejection filter for a DS-CDMA system
US5459758A (en) * 1993-11-02 1995-10-17 Interdigital Technology Corporation Noise shaping technique for spread spectrum communications
IL114471A0 (en) * 1994-07-12 1996-01-31 Usa Digital Radio Partners L P Method and system for simultaneously broadcasting and analog signals
US5671247A (en) * 1995-10-24 1997-09-23 Motorola, Inc. Method and apparatus for interference suppression in spread spectrum signals

Also Published As

Publication number Publication date
KR970077961A (ko) 1997-12-12
CN1110151C (zh) 2003-05-28
CA2205325A1 (en) 1997-11-16
JPH1070487A (ja) 1998-03-10
US5936998A (en) 1999-08-10
EP0808032A2 (en) 1997-11-19
KR100373523B1 (ko) 2003-08-19
EP0808032A3 (en) 2003-01-15
CN1166095A (zh) 1997-11-26

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