CA2193843A1 - Phased Array Spread Spectrum System and Method - Google Patents

Phased Array Spread Spectrum System and Method

Info

Publication number
CA2193843A1
CA2193843A1 CA2193843A CA2193843A CA2193843A1 CA 2193843 A1 CA2193843 A1 CA 2193843A1 CA 2193843 A CA2193843 A CA 2193843A CA 2193843 A CA2193843 A CA 2193843A CA 2193843 A1 CA2193843 A1 CA 2193843A1
Authority
CA
Canada
Prior art keywords
signals
spread
spectrum
magnitude values
magnitude
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA2193843A
Other languages
French (fr)
Other versions
CA2193843C (en
Inventor
Donald L. Schilling
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
InterDigital Technology Corp
Original Assignee
Individual
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23015931&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2193843(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of CA2193843A1 publication Critical patent/CA2193843A1/en
Application granted granted Critical
Publication of CA2193843C publication Critical patent/CA2193843C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0891—Space-time diversity
    • H04B7/0894—Space-time diversity using different delays between antennas
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/14—Systems for determining direction or deviation from predetermined direction
    • G01S3/38—Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristic of an antenna or an antenna system to give a desired condition of signal derived from that antenna or antenna system, e.g. to give a maximum or minimum signal
    • G01S3/42—Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristic of an antenna or an antenna system to give a desired condition of signal derived from that antenna or antenna system, e.g. to give a maximum or minimum signal the desired condition being maintained automatically
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/22—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation in accordance with variation of frequency of radiated wave
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/2605—Array of radiating elements provided with a feedback control over the element weights, e.g. adaptive arrays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/2682—Time delay steered arrays
    • 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
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/084—Equal gain combining, only phase adjustments
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • 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
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/1081—Reduction of multipath noise

Abstract

A phased array spread-spectrum system maximizes signal strength of a spread-spectrum signal with multipath. RF/IF section (21) receives a plurality of spread-spectrum signals. RF/IF section (22) receives a plurality of phased versions of the plurality of spread-spectrum signals. Digital delay devices (27, 28) delay the received spread-spectrum signals with respect to their phased versions by a plurality of delays. Summers (29, 30) combine the delayed spread-spectrum signals and their phased versions as a plurality of combined signals. Despreader (31) despreads the combined signals as a plurality of despread signals. Magnitude device (32) generates a plurality of magnitude values from the despread signals. Shift register (33) stores a plurality of previous-magnitude values and present-magnitude values previously and presently generated by the magnitude device (32). Comparator (34) compares the previous-magnitude values to the present-magnitude values and outputs a plurality of comparison signals. Digital delay devices (27, 28), responsive to the comparison signals, lengthen or shorten the plurality of delays.
CA002193843A 1994-06-28 1995-06-16 Phased array spread spectrum system and method Expired - Lifetime CA2193843C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/266,769 US5659572A (en) 1993-11-22 1994-06-28 Phased array spread spectrum system and method
US08/266,769 1994-06-28
PCT/US1995/008562 WO1996000991A1 (en) 1994-06-28 1995-06-16 Phased array spread spectrum system and method

Publications (2)

Publication Number Publication Date
CA2193843A1 true CA2193843A1 (en) 1996-01-11
CA2193843C CA2193843C (en) 2000-11-14

Family

ID=23015931

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002193843A Expired - Lifetime CA2193843C (en) 1994-06-28 1995-06-16 Phased array spread spectrum system and method

Country Status (17)

Country Link
US (9) US5659572A (en)
EP (3) EP1085342A1 (en)
JP (1) JP3796721B2 (en)
CN (7) CN1306717C (en)
AT (1) ATE223113T1 (en)
AU (1) AU686858B2 (en)
BR (1) BR9508146A (en)
CA (1) CA2193843C (en)
DE (2) DE69527964T2 (en)
DK (2) DK0767976T3 (en)
ES (1) ES2144383T3 (en)
FI (1) FI965223A (en)
HK (6) HK1055025B (en)
MX (1) MX9700017A (en)
NZ (1) NZ290255A (en)
SE (3) SE521161C2 (en)
WO (1) WO1996000991A1 (en)

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Publication number Publication date
EP0767976A1 (en) 1997-04-16
US7362793B2 (en) 2008-04-22
HK1055025A1 (en) 2003-12-19
AU686858B2 (en) 1998-02-12
US7580475B2 (en) 2009-08-25
SE521161C2 (en) 2003-10-07
DE19581691T1 (en) 1997-06-19
SE0401974L (en) 2004-08-03
SE525806C2 (en) 2005-05-03
WO1996000991A1 (en) 1996-01-11
SE0301545D0 (en) 2003-05-27
US8462876B2 (en) 2013-06-11
DE69527964T2 (en) 2003-03-27
CN1086871C (en) 2002-06-26
CN1158187A (en) 1997-08-27
SE9604711D0 (en) 1996-12-20
DE69527964D1 (en) 2002-10-02
DK0767976T3 (en) 2003-01-06
SE525117C2 (en) 2004-11-30
HK1055022A1 (en) 2003-12-19
HK1055026B (en) 2005-03-18
CN1173483C (en) 2004-10-27
AU3094295A (en) 1996-01-25
EP0767976A4 (en) 2000-05-17
CN1306717C (en) 2007-03-21
HK1055024A1 (en) 2003-12-19
CN1173484C (en) 2004-10-27
EP1093185A2 (en) 2001-04-18
DK174844B1 (en) 2003-12-15
US5926502A (en) 1999-07-20
HK1055023A1 (en) 2003-12-19
CN1392674A (en) 2003-01-22
DK145296A (en) 1997-02-26
CN1392675A (en) 2003-01-22
BR9508146A (en) 1999-01-05
US20010024466A1 (en) 2001-09-27
FI965223A0 (en) 1996-12-27
CA2193843C (en) 2000-11-14
HK1055022B (en) 2005-03-11
US5633889A (en) 1997-05-27
US20020080858A1 (en) 2002-06-27
US6256340B1 (en) 2001-07-03
CN1394000A (en) 2003-01-29
ES2144383T1 (en) 2000-06-16
ES2144383T3 (en) 2003-03-01
ATE223113T1 (en) 2002-09-15
JP3796721B2 (en) 2006-07-12
HK1072677A1 (en) 2005-09-02
CN1596011A (en) 2005-03-16
EP0767976B1 (en) 2002-08-28
US6563860B2 (en) 2003-05-13
CN1393999A (en) 2003-01-29
HK1055024B (en) 2005-03-11
CN1315346C (en) 2007-05-09
CN1173482C (en) 2004-10-27
NZ290255A (en) 1998-06-26
JPH10502505A (en) 1998-03-03
EP1085342A1 (en) 2001-03-21
HK1055025B (en) 2007-07-20
US5659572A (en) 1997-08-19
SE0401974D0 (en) 2004-08-03
CN1392676A (en) 2003-01-22
EP1093185A3 (en) 2001-11-21
SE0301545L (en) 2003-05-27
HK1055023B (en) 2005-03-11
HK1055026A1 (en) 2003-12-19
US20050047483A1 (en) 2005-03-03
US20090310652A1 (en) 2009-12-17
SE9604711L (en) 1997-02-21
MX9700017A (en) 1997-12-31
FI965223A (en) 1997-02-26
US6400756B2 (en) 2002-06-04
CN1177412C (en) 2004-11-24
US20080192808A1 (en) 2008-08-14

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