WO2001097395A3 - A method and apparatus for applying codes having predefined properties - Google Patents

A method and apparatus for applying codes having predefined properties Download PDF

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Publication number
WO2001097395A3
WO2001097395A3 PCT/US2001/018785 US0118785W WO0197395A3 WO 2001097395 A3 WO2001097395 A3 WO 2001097395A3 US 0118785 W US0118785 W US 0118785W WO 0197395 A3 WO0197395 A3 WO 0197395A3
Authority
WO
WIPO (PCT)
Prior art keywords
properties
codes
layout
code
predefined properties
Prior art date
Application number
PCT/US2001/018785
Other languages
French (fr)
Other versions
WO2001097395A2 (en
Inventor
James L Richards
Mark D Roberts
Marcus H Pendergrass
Original Assignee
Time Domain Corp
Fullerton Larry W
James L Richards
Mark D Roberts
Marcus H Pendergrass
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 US09/591,690 external-priority patent/US6671310B1/en
Application filed by Time Domain Corp, Fullerton Larry W, James L Richards, Mark D Roberts, Marcus H Pendergrass filed Critical Time Domain Corp
Priority to AU2001269782A priority Critical patent/AU2001269782A1/en
Publication of WO2001097395A2 publication Critical patent/WO2001097395A2/en
Publication of WO2001097395A3 publication Critical patent/WO2001097395A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/4902—Pulse width modulation; Pulse position 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
    • 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
    • H04B2001/6908—Spread spectrum techniques using time hopping
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/10—Code generation

Abstract

A method for specifying pulse characteristics applies codes having pre-defined characteristics to a layout. The layout can be sequentially subdivided into at least first and second components that have the same or different sizes. The method applies a first code having first pre-defined properties to the first component and a second code having second pre-defined properties to the second component. The pre-defined properties may relate to the auto-correlation property, the cross-correlation property, and spectral properties, as examples. The codes can be used to specify subcomponents within a frame, and characteristic values (range-based, or discrete) within the subcomponents.
PCT/US2001/018785 2000-06-12 2001-06-12 A method and apparatus for applying codes having predefined properties WO2001097395A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001269782A AU2001269782A1 (en) 2000-06-12 2001-06-12 A method and apparatus for applying codes having predefined properties

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US09/591,690 2000-06-12
US09/591,690 US6671310B1 (en) 2000-06-12 2000-06-12 Method and apparatus for positioning pulses over time by applying time-hopping codes having pre-defined characteristics
US09/638,046 US6788730B1 (en) 2000-06-12 2000-08-15 Method and apparatus for applying codes having pre-defined properties
US09/638,046 2000-08-15

Publications (2)

Publication Number Publication Date
WO2001097395A2 WO2001097395A2 (en) 2001-12-20
WO2001097395A3 true WO2001097395A3 (en) 2002-06-06

Family

ID=27081214

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/018785 WO2001097395A2 (en) 2000-06-12 2001-06-12 A method and apparatus for applying codes having predefined properties

Country Status (2)

Country Link
AU (1) AU2001269782A1 (en)
WO (1) WO2001097395A2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5604767A (en) * 1993-11-01 1997-02-18 Omnipoint Corporation Spread spectrum spectral density techniques
US5610907A (en) * 1994-07-29 1997-03-11 Barrett; Terence W. Ultrafast time hopping CDMA-RF communications: code-as-carrier, multichannel operation, high data rate operation and data rate on demand
EP0808028A1 (en) * 1995-10-30 1997-11-19 SMK Corporation Pulse modulating method, pulse modulator, and pulse demodulator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5604767A (en) * 1993-11-01 1997-02-18 Omnipoint Corporation Spread spectrum spectral density techniques
US5610907A (en) * 1994-07-29 1997-03-11 Barrett; Terence W. Ultrafast time hopping CDMA-RF communications: code-as-carrier, multichannel operation, high data rate operation and data rate on demand
EP0808028A1 (en) * 1995-10-30 1997-11-19 SMK Corporation Pulse modulating method, pulse modulator, and pulse demodulator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
BELLEGARDA J R: "Congruential frequency hop signals for multi-user environments: a comparative analysis", ICASSP 90. 1990 INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING (CAT. NO.90CH2847-2), ALBUQUERQUE, NM, USA, 3-6 APRIL 1990, 1990, New York, NY, USA, IEEE, USA, pages 2903 - 2906, XP010004391 *

Also Published As

Publication number Publication date
AU2001269782A1 (en) 2001-12-24
WO2001097395A2 (en) 2001-12-20

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