BR9902539A - Transceptor definido por software para um sistema de telecomunicações sem fio - Google Patents

Transceptor definido por software para um sistema de telecomunicações sem fio

Info

Publication number
BR9902539A
BR9902539A BR9902539-6A BR9902539A BR9902539A BR 9902539 A BR9902539 A BR 9902539A BR 9902539 A BR9902539 A BR 9902539A BR 9902539 A BR9902539 A BR 9902539A
Authority
BR
Brazil
Prior art keywords
uplink
signals
wireless telecommunications
channels
different
Prior art date
Application number
BR9902539-6A
Other languages
English (en)
Inventor
Alan Stephen Allpress
Sridhar Arunachalam
Reza Mardani
Carmine James Pagano
Tiejan Shan
Joseph Anthony Tarallo
Original Assignee
Lucent Technologies 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 Lucent Technologies Inc filed Critical Lucent Technologies Inc
Publication of BR9902539A publication Critical patent/BR9902539A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/204—Multiple access
    • 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
    • H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
    • H04B1/0007—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage
    • H04B1/0017—Digital filtering
    • 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
    • H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
    • 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
    • H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
    • H04B1/0007—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage
    • H04B1/001—Channel filtering, i.e. selecting a frequency channel within the SDR system
    • 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
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/403—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
    • H04B1/406—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency with more than one transmission mode, e.g. analog and digital modes

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Superheterodyne Receivers (AREA)
  • Transceivers (AREA)

Abstract

RANSCEPTOR DEFINIDO POR SOFTWARE PARA UM SISTEMA DE TELECOMUNICAçõES SEM FIO é revelada uma técnica para receber e transmitir telecomunicações sem fio por meio do uso de uma arquitetura genérica. à presente invenção diminui a complexidade de diferentes operações de transceptor permitindo que seja usada uma arquitetura genérica em uma variedade de situações com diferentes canais e diferentes padrões de telecomunicações. Uma modalidade ilustrativa da presente invenção compreende: receber sinais analógicos de RF de enlace ascendente em uma estação base; converter os sinais de RF analógicos de faixa ampla de enlace ascendente em sinais digitais de IF de enlace ascendente em um conversor de analógico para digital; converter os sinais digitais de IF de enlace ascendende em vários canais de enlace ascendente; e desmodular canais selecionados de enlace ascendente de faixa estreita a partir do número total de canais de enlace ascendente de faixa estreita.
BR9902539-6A 1998-07-15 1999-07-06 Transceptor definido por software para um sistema de telecomunicações sem fio BR9902539A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/115,933 US6496546B1 (en) 1998-07-15 1998-07-15 Software-defined transceiver for a wireless telecommunications system

Publications (1)

Publication Number Publication Date
BR9902539A true BR9902539A (pt) 2000-03-14

Family

ID=22364236

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9902539-6A BR9902539A (pt) 1998-07-15 1999-07-06 Transceptor definido por software para um sistema de telecomunicações sem fio

Country Status (8)

Country Link
US (1) US6496546B1 (pt)
EP (1) EP0973271A1 (pt)
JP (1) JP2000050341A (pt)
KR (1) KR100343348B1 (pt)
CN (1) CN1244089A (pt)
AU (1) AU760647B2 (pt)
BR (1) BR9902539A (pt)
CA (1) CA2273655C (pt)

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Also Published As

Publication number Publication date
CN1244089A (zh) 2000-02-09
AU4011399A (en) 2000-02-10
EP0973271A1 (en) 2000-01-19
CA2273655C (en) 2003-08-05
US6496546B1 (en) 2002-12-17
KR20000011757A (ko) 2000-02-25
KR100343348B1 (ko) 2002-07-15
CA2273655A1 (en) 2000-01-15
JP2000050341A (ja) 2000-02-18
AU760647B2 (en) 2003-05-22

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 6A, 7A E 8A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 1910 DE 14/08/2007.

B15K Others concerning applications: alteration of classification

Ipc: H04B 1/00 (2006.01), H04B 1/403 (2015.0