SE9503752D0 - Direct Sequence Banding (DSSS) method of a data sequence - Google Patents

Direct Sequence Banding (DSSS) method of a data sequence

Info

Publication number
SE9503752D0
SE9503752D0 SE9503752A SE9503752A SE9503752D0 SE 9503752 D0 SE9503752 D0 SE 9503752D0 SE 9503752 A SE9503752 A SE 9503752A SE 9503752 A SE9503752 A SE 9503752A SE 9503752 D0 SE9503752 D0 SE 9503752D0
Authority
SE
Sweden
Prior art keywords
sequence
spreading
data
data sequence
dsss
Prior art date
Application number
SE9503752A
Other languages
Swedish (sv)
Other versions
SE506622C2 (en
SE9503752L (en
Inventor
Arne Lindblad
Anna Wik
Original Assignee
Foersvarets Forskningsanstalt
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 Foersvarets Forskningsanstalt filed Critical Foersvarets Forskningsanstalt
Priority to SE9503752A priority Critical patent/SE506622C2/en
Publication of SE9503752D0 publication Critical patent/SE9503752D0/en
Priority to JP51654497A priority patent/JP2001513950A/en
Priority to AU75114/96A priority patent/AU712151B2/en
Priority to PCT/SE1996/001371 priority patent/WO1997015986A1/en
Priority to EP96937617A priority patent/EP0873598A1/en
Priority to CA002235737A priority patent/CA2235737A1/en
Publication of SE9503752L publication Critical patent/SE9503752L/en
Publication of SE506622C2 publication Critical patent/SE506622C2/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/10—Code generation
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/20—Countermeasures against jamming
    • H04K3/25—Countermeasures against jamming based on characteristics of target signal or of transmission, e.g. using direct sequence spread spectrum or fast frequency hopping
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/80—Jamming or countermeasure characterized by its function
    • H04K3/82—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection
    • H04K3/827—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection using characteristics of target signal or of transmission, e.g. using direct sequence spread spectrum or fast frequency hopping
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/001—Modulated-carrier systems using chaotic signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70706—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation with means for reducing the peak-to-average power ratio
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/02—Secret communication by adding a second signal to make the desired signal unintelligible
    • H04K1/025—Secret communication by adding a second signal to make the desired signal unintelligible using an analogue chaotic signal

Abstract

The present invention relates to a method for direct sequence spreading of a data sequence (d(t)) or a modulated data sequence (s(t)). The method yields better spectral properties than conventional methods for data transmission using direct sequence spread spectrum (DSSS) and is also suitable for systems where one wants to conceal the existence of transmission, so-called stealth radio. This is achieved by one or more spreading sequence generators (21) in the transmitter and the corresponding sequence generators (31) in the receiver emitting new output data at a rate which essentially exceeds the one required for obtaining in the transmitter a certain desired spread bandwidth, the spreading sequence or spreading sequences (c(t)) being caused to bandspread the data sequence (d(t)) or the modulated data sequence (s(t)), and the desired spread bandwidth being obtained by filtering in band-limiting filters (22).
SE9503752A 1995-10-25 1995-10-25 Direct Sequence Banding (DSSS) method of a data sequence SE506622C2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE9503752A SE506622C2 (en) 1995-10-25 1995-10-25 Direct Sequence Banding (DSSS) method of a data sequence
JP51654497A JP2001513950A (en) 1995-10-25 1996-10-25 Direct sequence spreading method for data sequence
AU75114/96A AU712151B2 (en) 1995-10-25 1996-10-25 A method for direct sequence spreading of a data sequence (DSSS)
PCT/SE1996/001371 WO1997015986A1 (en) 1995-10-25 1996-10-25 A method for direct sequence spreading of a data sequence (dsss)
EP96937617A EP0873598A1 (en) 1995-10-25 1996-10-25 A method for direct sequence spreading of a data sequence (dsss)
CA002235737A CA2235737A1 (en) 1995-10-25 1996-10-25 A method for direct sequence spreading of a data sequence (dsss)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9503752A SE506622C2 (en) 1995-10-25 1995-10-25 Direct Sequence Banding (DSSS) method of a data sequence

Publications (3)

Publication Number Publication Date
SE9503752D0 true SE9503752D0 (en) 1995-10-25
SE9503752L SE9503752L (en) 1997-04-26
SE506622C2 SE506622C2 (en) 1998-01-19

Family

ID=20399954

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9503752A SE506622C2 (en) 1995-10-25 1995-10-25 Direct Sequence Banding (DSSS) method of a data sequence

Country Status (6)

Country Link
EP (1) EP0873598A1 (en)
JP (1) JP2001513950A (en)
AU (1) AU712151B2 (en)
CA (1) CA2235737A1 (en)
SE (1) SE506622C2 (en)
WO (1) WO1997015986A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE602004012483T2 (en) * 2003-06-18 2008-11-27 Samsung Electronics Co., Ltd., Suwon Method and apparatus for generating a preamble by means of a chaotic sequence
LU91292B1 (en) * 2006-12-01 2008-06-02 European Gsa New Chaotic Spreading Codes for Galileo
CN103490845B (en) * 2013-09-16 2015-09-30 哈尔滨工程大学 Based on Adaptive MPEG I Coding System Based on Structure Segmentation generation device and the method for weighting process
US9479217B1 (en) * 2015-07-28 2016-10-25 John David Terry Method and apparatus for communicating data in a digital chaos cooperative network
CN106654853B (en) * 2017-01-06 2019-01-25 电子科技大学 A kind of laser chaos spread spectrum transformation system with latency hiding characteristic

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4918706A (en) * 1988-12-28 1990-04-17 Sperry Marine Inc. Spread spectrum long loop receiver
US5418813A (en) * 1993-12-06 1995-05-23 Motorola, Inc. Method and apparatus for creating a composite waveform

Also Published As

Publication number Publication date
CA2235737A1 (en) 1997-05-01
AU7511496A (en) 1997-05-15
WO1997015986A1 (en) 1997-05-01
SE506622C2 (en) 1998-01-19
SE9503752L (en) 1997-04-26
JP2001513950A (en) 2001-09-04
AU712151B2 (en) 1999-10-28
EP0873598A1 (en) 1998-10-28

Similar Documents

Publication Publication Date Title
EP0987913A3 (en) Spread spectrum cdma transmitter
DE69815105T2 (en) MOBILE STATION SYNCHRONIZATION IN A SPREADING SPECTRUM MESSAGE TRANSMISSION SYSTEM
CA2176401A1 (en) A high-data-rate wireless local-area network
RU98103270A (en) METHOD AND DEVICE FOR ORTHOGONALIZATION OF MULTIPLE ACCESS SIGNALS WITH CODE SEPARATION
CA2679170A1 (en) Synchronous spread-spectrum communications system and method
CA2221910A1 (en) System and method for spread spectrum code position modulation and wireless local area network employing the same
FI125863B (en) Band spreading system and method
DE60012531D1 (en) RAKE COMBINATION METHOD AND DEVICE USING WEIGHTED FACTORS DERIVED FROM KNOWN SPREAD SPECTRUM SIGNAL PROPERTIES
EP0822670A3 (en) Sequence generation for asynchronous spread spectrum communication
MY133498A (en) Multi-stage rake combining methods and apparatus
FI950600A (en) Receiver and method for generating spreading codes in the receiver
EP0378417A3 (en) Code division multiplex system
EP0809364A3 (en) Spread spectrum communication system
EP1513265A3 (en) Spread spectrum communication receiver and CDMA mobile communication method
IL111449A0 (en) Method and apparatus for variable rate signal transmission in a spread spectrum communication system using coset coding
IL183434A0 (en) Method and apparatus for multiple access over a communication channel
EP0641109A3 (en) Code generating method for spread spectrum communication
WO2001050615A3 (en) Spreading factor determination
EP0913971A3 (en) Channel Estimation in a CDMA cellular communication system
DE69833458D1 (en) CHAINED CODE FOR SPREADING SPECTRUM TRANSMISSION
CA2416702A1 (en) Method for transmitting information using chaotic signals
SE9503752L (en) Direct Sequence Banding (DSSS) method of a data sequence
EP0366086A3 (en) Code shift keying (csk) apparatus and method for spectrum spread communication
EP1333606A3 (en) Transmission of CPM spread spectrum communications
CA2184448A1 (en) CSK communication system and method for spread spectrum communication

Legal Events

Date Code Title Description
NUG Patent has lapsed