CA2303540A1 - Utilisation de plusieurs antennes pour limiter la reflexion speculaire - Google Patents

Utilisation de plusieurs antennes pour limiter la reflexion speculaire Download PDF

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Publication number
CA2303540A1
CA2303540A1 CA002303540A CA2303540A CA2303540A1 CA 2303540 A1 CA2303540 A1 CA 2303540A1 CA 002303540 A CA002303540 A CA 002303540A CA 2303540 A CA2303540 A CA 2303540A CA 2303540 A1 CA2303540 A1 CA 2303540A1
Authority
CA
Canada
Prior art keywords
signal
antenna
receiver
specular
combining
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.)
Abandoned
Application number
CA002303540A
Other languages
English (en)
Inventor
William R. Panton
Mohammad Ali Tassoudji
James H. Thompson
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.)
Qualcomm Inc
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
Application filed by Individual filed Critical Individual
Publication of CA2303540A1 publication Critical patent/CA2303540A1/fr
Abandoned 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
    • 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
    • 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
    • H04B7/0842—Weighted combining
    • H04B7/0865—Independent weighting, i.e. weights based on own antenna reception parameters

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Relay Systems (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

On décrit un appareil et un procédé permettant d'utiliser plusieurs antennes réceptrices (420A, 420B) dans un récepteur (500, 600) d'un système (100) de communication par satellite pour atténuer les effets de la réflexion spéculaire (202B, 402B) d'un signal reçu (202A, 402A). Le système comprend des première et deuxième antennes (420A, 420B) destinées à recevoir un signal de communication par satellite le long de première et deuxième voies de propagation directe (202A, 402A) et de voies de propagation spéculaire (202B, 402B) respectivement et un combineur (520) de rapport maximal numérique qui combine les signaux reçus par les première et deuxième antennes (202A, 202B, 402A, 402B) de manière à augmenter au maximum le rapport signal-sur-bruit du signal combiné résultant.
CA002303540A 1997-09-29 1998-09-25 Utilisation de plusieurs antennes pour limiter la reflexion speculaire Abandoned CA2303540A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US93932597A 1997-09-29 1997-09-29
US08/939,325 1997-09-29
PCT/US1998/020076 WO1999017466A1 (fr) 1997-09-29 1998-09-25 Utilisation de plusieurs antennes pour limiter la reflexion speculaire

Publications (1)

Publication Number Publication Date
CA2303540A1 true CA2303540A1 (fr) 1999-04-08

Family

ID=25472971

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002303540A Abandoned CA2303540A1 (fr) 1997-09-29 1998-09-25 Utilisation de plusieurs antennes pour limiter la reflexion speculaire

Country Status (7)

Country Link
EP (1) EP1020042A1 (fr)
JP (1) JP2001518736A (fr)
KR (1) KR20010030790A (fr)
CN (1) CN1115800C (fr)
AU (1) AU1185299A (fr)
CA (1) CA2303540A1 (fr)
WO (1) WO1999017466A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001024555A (ja) * 1999-07-02 2001-01-26 Nec Mobile Commun Ltd Ｃｄｍａ通信装置および送信電力制御方法
GR1006628B (el) * 2009-01-28 2009-12-11 Αριστοτελειο Πανεπιστημιο Θεσσαλονικης-Ειδικος Λογαριασμος Αξιοποιησης Κονδυλιων Ερευνας Μεθοδος και συστημα συνδυασμου σηματων με απουσια εκτιμησης κερδους καναλιων, για εφαρμογη σε δεκτες ασυρματων τηλεπικοινωνιακων συστηματων
KR102718369B1 (ko) * 2023-01-25 2024-10-16 엘아이지넥스원 주식회사 유도 비행체에서의 표적 추적 방법 및 시스템

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2050118A (en) * 1979-04-30 1980-12-31 Post Office Improvements in or relating to space diversity receiving systems
JPS57159138A (en) * 1981-03-27 1982-10-01 Kokusai Denshin Denwa Co Ltd <Kdd> Electromagnetic wave reception system
IT1197781B (it) * 1986-07-18 1988-12-06 Gte Telecom Spa Sistema irradiante a diversita' angolare per radiocollegamenti a diffusione troposferica
JP2663478B2 (ja) * 1988-02-09 1997-10-15 日本電気株式会社 スペースダイバーシテイ受信方式
US5109390A (en) * 1989-11-07 1992-04-28 Qualcomm Incorporated Diversity receiver in a cdma cellular telephone system
JP2652264B2 (ja) * 1990-07-19 1997-09-10 国際電信電話株式会社 妨害波除去方式及び送受信装置
FI961944L (fi) * 1994-09-09 1996-05-08 Motorola Inc Radioantennisovitelma
EP0870370A1 (fr) * 1995-12-28 1998-10-14 Qualcomm Incorporated Procede et appareil pour installer une diversite d'antennes dans un radiotelephone portable
JPH10247869A (ja) * 1997-03-04 1998-09-14 Nec Corp ダイバーシティ回路

Also Published As

Publication number Publication date
EP1020042A1 (fr) 2000-07-19
KR20010030790A (ko) 2001-04-16
CN1115800C (zh) 2003-07-23
WO1999017466A9 (fr) 1999-06-24
AU1185299A (en) 1999-04-23
JP2001518736A (ja) 2001-10-16
WO1999017466A1 (fr) 1999-04-08
CN1281603A (zh) 2001-01-24

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