AR031519A1 - Un transmisor de senales de radio, un receptor de senales, un dispositivo de comunicaciones y un metodo - Google Patents

Un transmisor de senales de radio, un receptor de senales, un dispositivo de comunicaciones y un metodo

Info

Publication number
AR031519A1
AR031519A1 ARP000102189A ARP000102189A AR031519A1 AR 031519 A1 AR031519 A1 AR 031519A1 AR P000102189 A ARP000102189 A AR P000102189A AR P000102189 A ARP000102189 A AR P000102189A AR 031519 A1 AR031519 A1 AR 031519A1
Authority
AR
Argentina
Prior art keywords
displacement
receiver
transmitter
code
symbols
Prior art date
Application number
ARP000102189A
Other languages
English (en)
Original Assignee
Navcom Tech 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
Priority claimed from US09/522,393 external-priority patent/US6430212B1/en
Application filed by Navcom Tech Inc filed Critical Navcom Tech Inc
Publication of AR031519A1 publication Critical patent/AR031519A1/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/10—Code generation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
    • H03L7/091—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector using a sampling device
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
    • H03L7/181—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a numerical count result being used for locking the loop, the counter counting during fixed time intervals
    • 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
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/0022—PN, e.g. Kronecker
    • H04J13/0029—Gold
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0024—Carrier regulation at the receiver end
    • H04L2027/0026—Correction of carrier offset
    • H04L2027/0028—Correction of carrier offset at passband only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0044—Control loops for carrier regulation
    • H04L2027/0053—Closed loops
    • H04L2027/0055—Closed loops single phase

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

Un dispositivo de comunicaciones que incluye un transmisor y un receptor. El transmisor incluye un codificador M-ario configurado para generar un numero M-1 de símbolos distintivos, cada uno de los cuales comprende k bits. M es iguala 2k y k es un entero positivo. El transmisor también incluye un generador de codigos que se configura para producir secuencias de palabras en codigo de espectro expandido sobre la base de los símbolos que genera el codificador M-ario y sobre la base de las funciones polinomicas de codigo Gold primera y segunda. El transmisor envía una senal de radio con base en las secuencias de palabras en codigo de espectro expandido. El receptor se configura para recibir la senal de radio El receptor incluye un primer registro para desplazamiento configurado para recibir una senal de entrada que se genera sobre la base de la senal de radio que se recibe y un segundo registro para desplazamiento que se configura para recibir y desplazar en forma circular una secuencia de palabras en codigo generadas en forma local que es idéntica a la secuencia de codigo de palabras que se utiliza para codificar los símbolos. El receptor también incluye un acumulador acoplado a los registros de desplazamiento primero y segundo, y que se configura para multiplicar y acumular los valores almacenados en los registros para desplazamiento primero y segundo cada vez que el segundo registro para desplazamiento se desplaza en forma circular y un dispositivo selector acoplado al acumulador y configurado para identificar un símbolo entre la pluralidad de símbolos que tienen como bases las salidas del acumulador. Sumado a ello, se brinda explicacion respecto de las radios moviles que tienen la capacidad de sincronizar la frecuencia de sus respectivos osciladores a sus respectivas estaciones de base para reducir la probabilidad de introducir errores de demodulacion tanto en los enlaces de comunicaciones de base -a- movil como en los de movil -a- base.
ARP000102189A 1999-05-06 2000-05-05 Un transmisor de senales de radio, un receptor de senales, un dispositivo de comunicaciones y un metodo AR031519A1 (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US13288299P 1999-05-06 1999-05-06
US09/522,393 US6430212B1 (en) 1999-05-06 2000-03-09 Spread-spectrum GMSK/M-ary radio
US09/564,683 US6760393B1 (en) 1999-05-06 2000-05-04 Spread-spectrum GMSK/M-ary radio with oscillator frequency correction

Publications (1)

Publication Number Publication Date
AR031519A1 true AR031519A1 (es) 2003-09-24

Family

ID=27384364

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP000102189A AR031519A1 (es) 1999-05-06 2000-05-05 Un transmisor de senales de radio, un receptor de senales, un dispositivo de comunicaciones y un metodo

Country Status (5)

Country Link
EP (1) EP1188249A4 (es)
JP (1) JP2003530728A (es)
AR (1) AR031519A1 (es)
BR (1) BR0010340A (es)
WO (1) WO2000069088A1 (es)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6430212B1 (en) 1999-05-06 2002-08-06 Navcom Technology, Inc. Spread-spectrum GMSK/M-ary radio
US8213553B2 (en) 2004-04-12 2012-07-03 The Directv Group, Inc. Method and apparatus for identifying co-channel interference
US7161988B2 (en) 2004-04-12 2007-01-09 The Directv Group, Inc. Method and apparatus for minimizing co-channel interference
US7961880B2 (en) 2005-08-26 2011-06-14 The Directv Group, Inc. Methods and apparatuses for determining scrambling codes for signal transmission
US7672285B2 (en) * 2004-06-28 2010-03-02 Dtvg Licensing, Inc. Method and apparatus for minimizing co-channel interference by scrambling
US7460832B2 (en) * 2004-04-12 2008-12-02 The Directv Group, Inc. Methods and apparatuses for minimizing co-channel interference
US8724662B2 (en) * 2012-06-25 2014-05-13 Johnson & Johnson Vision Care, Inc. Wireless communication protocol for low power receivers

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4114155A (en) * 1976-07-30 1978-09-12 Cincinnati Electronics Corporation Position determining apparatus and method
US4538281A (en) * 1982-05-06 1985-08-27 Rockwell International Corporation Adaptive acquisition of multiple access codes
US5311542A (en) * 1990-09-19 1994-05-10 Honeywell Inc. Spread spectrum communication system
FR2681199B1 (fr) * 1991-09-11 1993-12-03 Agence Spatiale Europeenne Procede et dispositif pour multiplexer des signaux de donnees.
US5210770A (en) * 1991-09-27 1993-05-11 Lockheed Missiles & Space Company, Inc. Multiple-signal spread-spectrum transceiver
FI97003C (fi) * 1993-09-27 1996-09-25 Nokia Telecommunications Oy Menetelmä vaihelukitun silmukan ohjaamiseksi sekä vaihelukittu silmukka
US5463657A (en) * 1994-02-15 1995-10-31 Lockheed Missiles & Space Company, Inc. Detection of a multi-sequence spread spectrum signal
JP3483991B2 (ja) * 1995-07-27 2004-01-06 沖電気工業株式会社 符号分割多重アクセス通信用拡散符号発生器、符号分割多重アクセス通信システム及び符号分割多重アクセス通信用拡散符号発生方法

Also Published As

Publication number Publication date
BR0010340A (pt) 2002-06-04
WO2000069088A1 (en) 2000-11-16
JP2003530728A (ja) 2003-10-14
EP1188249A1 (en) 2002-03-20
WO2000069088A8 (en) 2001-03-22
EP1188249A4 (en) 2006-12-27

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