ZA716347B - Signal processing and transmission by means of walsh functions - Google Patents

Signal processing and transmission by means of walsh functions

Info

Publication number
ZA716347B
ZA716347B ZA716347A ZA716347A ZA716347B ZA 716347 B ZA716347 B ZA 716347B ZA 716347 A ZA716347 A ZA 716347A ZA 716347 A ZA716347 A ZA 716347A ZA 716347 B ZA716347 B ZA 716347B
Authority
ZA
South Africa
Prior art keywords
transmission
signal processing
walsh functions
walsh
functions
Prior art date
Application number
ZA716347A
Other languages
English (en)
Inventor
H Harmuth
Original Assignee
Standard Telephones Cables Ltd
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 Standard Telephones Cables Ltd filed Critical Standard Telephones Cables Ltd
Publication of ZA716347B publication Critical patent/ZA716347B/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L23/00—Apparatus or local circuits for systems other than those covered by groups H04L15/00 - H04L21/00
    • H04L23/02—Apparatus or local circuits for systems other than those covered by groups H04L15/00 - H04L21/00 adapted for orthogonal signalling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/004—Orthogonal
    • H04J13/0048—Walsh

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
ZA716347A 1970-10-26 1971-09-22 Signal processing and transmission by means of walsh functions ZA716347B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US8402570A 1970-10-26 1970-10-26

Publications (1)

Publication Number Publication Date
ZA716347B true ZA716347B (en) 1972-06-28

Family

ID=22182408

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA716347A ZA716347B (en) 1970-10-26 1971-09-22 Signal processing and transmission by means of walsh functions

Country Status (6)

Country Link
US (1) US3678204A (cg-RX-API-DMAC10.html)
BE (1) BE779112A (cg-RX-API-DMAC10.html)
CH (1) CH539987A (cg-RX-API-DMAC10.html)
FR (1) FR2113229A5 (cg-RX-API-DMAC10.html)
GB (1) GB1353217A (cg-RX-API-DMAC10.html)
ZA (1) ZA716347B (cg-RX-API-DMAC10.html)

Families Citing this family (49)

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US4052565A (en) * 1975-05-28 1977-10-04 Martin Marietta Corporation Walsh function signal scrambler
US4227250A (en) * 1978-11-09 1980-10-07 Bell Telephone Laboratories, Incorporated Minimization of excess bandwidth in pulse amplitude modulated data transmission
US4797807A (en) * 1985-08-02 1989-01-10 The United States Of America As Represented By The Secretary Of The Navy Multiple channel fast orthogonalization network
US5442627A (en) * 1993-06-24 1995-08-15 Qualcomm Incorporated Noncoherent receiver employing a dual-maxima metric generation process
MY112371A (en) * 1993-07-20 2001-05-31 Qualcomm Inc System and method for orthogonal spread spectrum sequence generation in variable data rate systems
US5497395A (en) * 1994-04-04 1996-03-05 Qualcomm Incorporated Method and apparatus for modulating signal waveforms in a CDMA communication system
US6185246B1 (en) * 1994-09-21 2001-02-06 Qualcomm Incorporated System and method for orthogonal spread spectrum sequence generation in variable data rate systems
US6700939B1 (en) * 1997-12-12 2004-03-02 Xtremespectrum, Inc. Ultra wide bandwidth spread-spectrum communications system
US7346120B2 (en) * 1998-12-11 2008-03-18 Freescale Semiconductor Inc. Method and system for performing distance measuring and direction finding using ultrawide bandwidth transmissions
US6351246B1 (en) 1999-05-03 2002-02-26 Xtremespectrum, Inc. Planar ultra wide band antenna with integrated electronics
US20030193924A1 (en) * 1999-09-10 2003-10-16 Stephan Gehring Medium access control protocol for centralized wireless network communication management
US7023833B1 (en) 1999-09-10 2006-04-04 Pulse-Link, Inc. Baseband wireless network for isochronous communication
US7088795B1 (en) 1999-11-03 2006-08-08 Pulse-Link, Inc. Ultra wide band base band receiver
US20020075972A1 (en) * 2000-03-29 2002-06-20 Time Domain Corporation Apparatus, system and method for one-of-many positions modulation in an impulse radio communications system
US6970448B1 (en) * 2000-06-21 2005-11-29 Pulse-Link, Inc. Wireless TDMA system and method for network communications
US6952456B1 (en) * 2000-06-21 2005-10-04 Pulse-Link, Inc. Ultra wide band transmitter
WO2002013313A2 (en) 2000-08-07 2002-02-14 Xtremespectrum, Inc. Electrically small planar uwb antenna apparatus and system thereof
US6560463B1 (en) 2000-09-29 2003-05-06 Pulse-Link, Inc. Communication system
US7397867B2 (en) * 2000-12-14 2008-07-08 Pulse-Link, Inc. Mapping radio-frequency spectrum in a communication system
US6996075B2 (en) 2000-12-14 2006-02-07 Pulse-Link, Inc. Pre-testing and certification of multiple access codes
US6947492B2 (en) * 2000-12-14 2005-09-20 Pulse-Link, Inc. Encoding and decoding ultra-wideband information
US6519464B1 (en) 2000-12-14 2003-02-11 Pulse-Link, Inc. Use of third party ultra wideband devices to establish geo-positional data
US6907244B2 (en) * 2000-12-14 2005-06-14 Pulse-Link, Inc. Hand-off between ultra-wideband cell sites
US20040002346A1 (en) * 2000-12-14 2004-01-01 John Santhoff Ultra-wideband geographic location system and method
US6937674B2 (en) 2000-12-14 2005-08-30 Pulse-Link, Inc. Mapping radio-frequency noise in an ultra-wideband communication system
US6836226B2 (en) * 2002-11-12 2004-12-28 Pulse-Link, Inc. Ultra-wideband pulse modulation system and method
US7190722B2 (en) * 2003-03-03 2007-03-13 Pulse-Link, Inc. Ultra-wideband pulse modulation system and method
US20040218687A1 (en) * 2003-04-29 2004-11-04 John Santhoff Ultra-wideband pulse modulation system and method
US8379736B2 (en) * 2003-05-30 2013-02-19 Intellectual Ventures Holding 73 Llc Ultra-wideband communication system and method
US20050035660A1 (en) * 2003-07-31 2005-02-17 John Santhoff Electromagnetic pulse generator
US20050035663A1 (en) * 2003-07-31 2005-02-17 Steven Moore Electromagnetic pulse generator
US20050024038A1 (en) * 2003-07-31 2005-02-03 John Santhoff Sampling circuit apparatus and method
US7145961B2 (en) * 2003-08-28 2006-12-05 Pulselink, Inc. Ultra wideband transmitter
US20050058153A1 (en) * 2003-09-15 2005-03-17 John Santhoff Common signaling method
US20050058102A1 (en) * 2003-09-15 2005-03-17 Santhoff John H. Ultra-wideband communication protocol
US7339883B2 (en) * 2003-09-15 2008-03-04 Pulse-Link, Inc. Ultra-wideband communication protocol
US20050058114A1 (en) * 2003-09-15 2005-03-17 John Santhoff Ultra-wideband communication protocol
US20050113045A1 (en) * 2003-11-21 2005-05-26 John Santhoff Bridged ultra-wideband communication method and apparatus
US7046618B2 (en) * 2003-11-25 2006-05-16 Pulse-Link, Inc. Bridged ultra-wideband communication method and apparatus
US7506547B2 (en) * 2004-01-26 2009-03-24 Jesmonth Richard E System and method for generating three-dimensional density-based defect map
US7299042B2 (en) * 2004-07-30 2007-11-20 Pulse-Link, Inc. Common signaling method and apparatus
US20060080722A1 (en) * 2004-10-12 2006-04-13 John Santhoff Buffered waveforms for high speed digital to analog conversion
US20060121851A1 (en) * 2004-12-06 2006-06-08 Steve Moore Ultra-wideband security system
US20070014331A1 (en) * 2005-07-12 2007-01-18 John Eldon Ultra-wideband communications system and method
US20070014332A1 (en) * 2005-07-12 2007-01-18 John Santhoff Ultra-wideband communications system and method
US20070022443A1 (en) * 2005-07-20 2007-01-25 John Santhoff Interactive communication apparatus and system
US8098707B2 (en) * 2006-01-31 2012-01-17 Regents Of The University Of Minnesota Ultra wideband receiver
US20070196621A1 (en) * 2006-02-02 2007-08-23 Arnold Frances Sprayable micropulp composition
RU2316118C1 (ru) * 2006-04-03 2008-01-27 ГОУВПО Рязанская государственная радиотехническая академия Способ многоканального формирования и восстановления аналоговых сигналов

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE653080A (cg-RX-API-DMAC10.html) * 1963-09-17 1964-12-31
US3522383A (en) * 1967-06-13 1970-07-28 Bell Telephone Labor Inc Block precoding for multiple speed data transmission

Also Published As

Publication number Publication date
US3678204A (en) 1972-07-18
BE779112A (fr) 1972-09-09
FR2113229A5 (cg-RX-API-DMAC10.html) 1972-06-23
GB1353217A (en) 1974-05-15
CH539987A (de) 1973-09-14

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