BR9915618A - Gerador de sequência de ruido pseudo aleatório de slew rápido - Google Patents

Gerador de sequência de ruido pseudo aleatório de slew rápido

Info

Publication number
BR9915618A
BR9915618A BR9915618-0A BR9915618A BR9915618A BR 9915618 A BR9915618 A BR 9915618A BR 9915618 A BR9915618 A BR 9915618A BR 9915618 A BR9915618 A BR 9915618A
Authority
BR
Brazil
Prior art keywords
slew
generator
loadable
noise sequence
sequence generator
Prior art date
Application number
BR9915618-0A
Other languages
English (en)
Inventor
Quizhen Zou
Gilbert C Sih
Avneesh Agrawal
Original Assignee
Qualcomm 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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of BR9915618A publication Critical patent/BR9915618A/pt

Links

Classifications

    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/58—Random or pseudo-random number generators
    • G06F7/582—Pseudo-random number generators
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/58—Random or pseudo-random number generators
    • G06F7/582—Pseudo-random number generators
    • G06F7/584—Pseudo-random number generators using finite field arithmetic, e.g. using a linear feedback shift register
    • 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
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/70756—Jumping within the code, i.e. masking or slewing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0074—Code shifting or hopping
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/10—Code generation

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Pure & Applied Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Analysis (AREA)
  • Computational Mathematics (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Complex Calculations (AREA)
  • Control Of Electric Motors In General (AREA)
  • Details Of Television Scanning (AREA)
  • Noise Elimination (AREA)
  • Debugging And Monitoring (AREA)

Abstract

Patente de Invenção: "GERADOR DE SEQuêNCIA DE RUìDO PSEUDO ALEATóRIO DE SLEW RáPIDO". Um ou mais geradores de PN carregáveis são controlados por um DSP ou microprocessador em conjunto com um contador de funcionamento livre que mantém uma contagem de offset de referência. O gerador de PN será tipicamente parte de um coletor ou pesquisador. Cada gerador de PN é constituído por um registro de slew por retroalimentação linear carregável (LFSR - Loadable Linear Feeedback Shift Register) ou seu equivalente, um contador carregável para manter um índice do estado daquele gerador de PN particular e um dispositivo de controle de slew capaz de receber um comando de slew e controlar o LFSR e o contador de índice para simular um avanço ou retardo de uma certa distância de offset. O aumento de velocidade é efetuado por controle DSP. Uma tabela de estados LFSR e correspondentes números de índice são armazenados na memória. Tais estados LFSR irão subdividir o número total possível de estados possíveis. é vantajoso espaçar de modo uniforme os estados armazenados em torno do círculo PN. O slew rápido é habilitado pelo DSP em um processo de duas etapas. Inicialmente o gerador PN é carregado de tal forma que ele "pula" para o estado mais próximo utilizando a tabela, a seguir o controle de slew do gerador de PN é usado para slew o resto do percurso.
BR9915618-0A 1998-11-23 1999-11-18 Gerador de sequência de ruido pseudo aleatório de slew rápido BR9915618A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/198,079 US6154101A (en) 1998-11-23 1998-11-23 Fast slewing pseudorandom noise sequence generator
PCT/US1999/027594 WO2000031622A1 (en) 1998-11-23 1999-11-18 Fast slewing pseudorandom noise sequence generator

Publications (1)

Publication Number Publication Date
BR9915618A true BR9915618A (pt) 2002-01-08

Family

ID=22731910

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9915618-0A BR9915618A (pt) 1998-11-23 1999-11-18 Gerador de sequência de ruido pseudo aleatório de slew rápido

Country Status (15)

Country Link
US (1) US6154101A (pt)
EP (1) EP1133723B1 (pt)
JP (1) JP2002530973A (pt)
KR (1) KR20010080545A (pt)
CN (1) CN1210648C (pt)
AT (1) ATE293807T1 (pt)
AU (1) AU760652B2 (pt)
BR (1) BR9915618A (pt)
CA (1) CA2351383C (pt)
DE (1) DE69924867T2 (pt)
ES (1) ES2241357T3 (pt)
HK (1) HK1041063A1 (pt)
MX (1) MXPA01005162A (pt)
RU (1) RU2235436C2 (pt)
WO (1) WO2000031622A1 (pt)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7031271B1 (en) * 1999-05-19 2006-04-18 Motorola, Inc. Method of and apparatus for activating a spread-spectrum radiotelephone
WO2001050239A1 (en) * 1999-12-30 2001-07-12 Morphics Technology, Inc. Apparatus and method for calculating and implementing a fibonacci mask for a code generator
JP4832635B2 (ja) * 2000-12-05 2011-12-07 インターナショナル・ビジネス・マシーンズ・コーポレーション データ伝送システム、データ伝送方法、データ記録装置およびコンピュータシステム
US6735606B2 (en) * 2001-05-15 2004-05-11 Qualcomm Incorporated Multi-sequence fast slewing pseudorandom noise generator
US6667708B2 (en) * 2001-12-28 2003-12-23 Motorola, Inc. Method and system for a programmable code generator
US6937643B2 (en) * 2002-04-30 2005-08-30 Qualcomm Inc ROM-based PN generation for wireless communication
US6986114B2 (en) * 2002-12-17 2006-01-10 International Business Machines Corporation Feedback cycle detection across non-scan memory elements
US6765506B1 (en) * 2003-01-06 2004-07-20 Via Technologies Inc. Scrambler, de-scrambler, and related method
US7365585B2 (en) * 2006-08-09 2008-04-29 Atmel Corporation Apparatus and method for charge pump slew rate control
MY147231A (en) 2007-03-19 2012-11-14 Panasonic Corp Sequence report method and sequence report device

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4785410A (en) * 1985-06-05 1988-11-15 Clarion Co., Ltd. Maximum length shift register sequences generator
US4864525A (en) * 1986-07-11 1989-09-05 Clarion Co., Ltd. Maximum length shift register sequence generator
JPH0787396B2 (ja) * 1986-07-11 1995-09-20 クラリオン株式会社 Ｍ系列符号発生制御装置
US4776012A (en) * 1987-04-17 1988-10-04 Unisys Corporation Method of jumping composite PN codes
JPS6436233A (en) * 1987-07-31 1989-02-07 Clarion Co Ltd Spread spectrum communication system
US5103459B1 (en) * 1990-06-25 1999-07-06 Qualcomm Inc System and method for generating signal waveforms in a cdma cellular telephone system
EP0770289B1 (en) * 1995-05-12 2002-11-27 Koninklijke Philips Electronics N.V. A direct-sequence spread spectrum communication system, a primary radio station, and a secondary radio station
GB2304941B (en) * 1995-06-24 1999-09-08 Motorola Ltd Feedback and shift unit
JPH0955715A (ja) * 1995-08-11 1997-02-25 Toshiba Corp スペクトル拡散無線通信装置
US5790589A (en) * 1996-08-14 1998-08-04 Qualcomm Incorporated System and method for rapidly reacquiring a pilot channel

Also Published As

Publication number Publication date
ATE293807T1 (de) 2005-05-15
JP2002530973A (ja) 2002-09-17
HK1041063A1 (en) 2002-06-28
CN1210648C (zh) 2005-07-13
ES2241357T3 (es) 2005-10-16
DE69924867T2 (de) 2006-03-02
RU2235436C2 (ru) 2004-08-27
CA2351383A1 (en) 2000-06-02
MXPA01005162A (es) 2002-05-14
EP1133723B1 (en) 2005-04-20
CA2351383C (en) 2008-09-16
DE69924867D1 (de) 2005-05-25
KR20010080545A (ko) 2001-08-22
WO2000031622A1 (en) 2000-06-02
AU760652B2 (en) 2003-05-22
US6154101A (en) 2000-11-28
CN1333889A (zh) 2002-01-30
AU3102300A (en) 2000-06-13
EP1133723A1 (en) 2001-09-19

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Legal Events

Date Code Title Description
B11A Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing
B11Y Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette]
B11N Dismissal: publication cancelled [chapter 11.14 patent gazette]
B11N Dismissal: publication cancelled [chapter 11.14 patent gazette]
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B11B Dismissal acc. art. 36, par 1 of ipl - no reply within 90 days to fullfil the necessary requirements