WO2001037441A3 - A nonlinear dynamic system for spread spectrum code generation and acquisition - Google Patents

A nonlinear dynamic system for spread spectrum code generation and acquisition Download PDF

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Publication number
WO2001037441A3
WO2001037441A3 PCT/US2000/031334 US0031334W WO0137441A3 WO 2001037441 A3 WO2001037441 A3 WO 2001037441A3 US 0031334 W US0031334 W US 0031334W WO 0137441 A3 WO0137441 A3 WO 0137441A3
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WO
WIPO (PCT)
Prior art keywords
signal
spread spectrum
actuating
produce
delayed
Prior art date
Application number
PCT/US2000/031334
Other languages
French (fr)
Other versions
WO2001037441A2 (en
Inventor
Benjamin Vigoda
Original Assignee
Massachusetts Inst Technology
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 Massachusetts Inst Technology filed Critical Massachusetts Inst Technology
Priority to AU16106/01A priority Critical patent/AU1610601A/en
Publication of WO2001037441A2 publication Critical patent/WO2001037441A2/en
Publication of WO2001037441A3 publication Critical patent/WO2001037441A3/en

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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
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/10—Code generation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

Nonlinear dynamic systems for generating and acquiring a spread spectrum signal pseudo-random noise (PN) signal are disclosed. An actuating signal is delayed by a first and second period to produce delayed actuating signals. A continuous, nonlinear function is applied to input that corresponds to the delayed actuating signals to produce an output signal. The function has values that correspond to the binary integer values of the mod 2 addition function of a linear feedback shift register, and a non-zero slope at those values. The output signal becomes a PN signal over time when it is fed back to the actuating signal. The output signal synchronizes with a spread spectrum reference input signal when it is superposed on the reference input signal to produce the actuating signal. The system may be incorporated into a transmitter or a receiver, either of which may be part of a larger communication system.
PCT/US2000/031334 1999-11-15 2000-11-15 A nonlinear dynamic system for spread spectrum code generation and acquisition WO2001037441A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU16106/01A AU1610601A (en) 1999-11-15 2000-11-15 A nonlinear dynamic system for spread spectrum code generation and acquisition

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16557699P 1999-11-15 1999-11-15
US60/165,576 1999-11-15

Publications (2)

Publication Number Publication Date
WO2001037441A2 WO2001037441A2 (en) 2001-05-25
WO2001037441A3 true WO2001037441A3 (en) 2002-01-24

Family

ID=22599499

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/031334 WO2001037441A2 (en) 1999-11-15 2000-11-15 A nonlinear dynamic system for spread spectrum code generation and acquisition

Country Status (2)

Country Link
AU (1) AU1610601A (en)
WO (1) WO2001037441A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE50206925D1 (en) 2002-12-24 2006-06-29 Blox Ag synchronization circuit
EP1434359B1 (en) * 2002-12-24 2005-07-20 U-Blox-AG Method for generating a sequence synchronised with an external signal, synchronization circuit and receiver
FR2865870B1 (en) * 2004-01-30 2006-05-26 Centre Nat Rech Scient GENERATING A HIGH-RANDOM RANDOM BIT FLOW

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5737360A (en) * 1995-06-19 1998-04-07 International Business Machines, Corp. System employing continuous-time dissipative pseudorandom dynamics for communications and measurement
EP0936748A2 (en) * 1998-02-12 1999-08-18 Yozan Inc. Matched filter bank CDMA communication

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5737360A (en) * 1995-06-19 1998-04-07 International Business Machines, Corp. System employing continuous-time dissipative pseudorandom dynamics for communications and measurement
EP0936748A2 (en) * 1998-02-12 1999-08-18 Yozan Inc. Matched filter bank CDMA communication

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
VIGODA BENJAMIN: "A Nonlinear Dynamic System for Spread Spectrum Code Acquisition", INTERNET ARTICLE, 9 August 1999 (1999-08-09), pages 1 - 90, XP002167577, Retrieved from the Internet <URL:www.media.mit.edu/physics/publications/theses/99.06.vigoda.pdf> [retrieved on 20010427] *

Also Published As

Publication number Publication date
WO2001037441A2 (en) 2001-05-25
AU1610601A (en) 2001-05-30

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