BRPI0411910A - repetidora com diversidade de percurso sintética - Google Patents

repetidora com diversidade de percurso sintética

Info

Publication number
BRPI0411910A
BRPI0411910A BRPI0411910-0A BRPI0411910A BRPI0411910A BR PI0411910 A BRPI0411910 A BR PI0411910A BR PI0411910 A BRPI0411910 A BR PI0411910A BR PI0411910 A BRPI0411910 A BR PI0411910A
Authority
BR
Brazil
Prior art keywords
signal
repeater
bts
original
diversity
Prior art date
Application number
BRPI0411910-0A
Other languages
English (en)
Inventor
Douglas Neal Rowitch
Original Assignee
Qualcomm Inc
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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of BRPI0411910A publication Critical patent/BRPI0411910A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • 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
    • H04B1/59—Responders; Transponders
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • 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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/46—Indirect determination of position data
    • G01S2013/466—Indirect determination of position data by Trilateration, i.e. two antennas or two sensors determine separately the distance to a target, whereby with the knowledge of the baseline length, i.e. the distance between the antennas or sensors, the position data of the target is determined
    • 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
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0667—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal
    • H04B7/0671—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal 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
    • H04B7/10—Polarisation diversity; Directional diversity

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Relay Systems (AREA)
  • Radio Transmission System (AREA)

Abstract

"REPETIDORA COM DIVERSIDADE DE PERCURSO SINTéTTCA". Trata-se de uma repetidora de comunicação para ser utilizado em conjunto com um subsistema transceptor base (BTS) de um sistema de comunicação em fio. A repetidora expande a área de cobertura do BTS e permite que os receptores identifiquem se a fonte de um sinal de comunicação era diretamente de um BTS ou foi transmitido por uma repetidora. A identificação da fonte do sinal facilita a determinação da posição, sobretudo em sistemas de determinação de posição híbridos. A repetidora implementa a modulação de retardo diferencial do sinal transmitido. A repetidora retransmite o sinal original do BTS assim como uma versão retardada no tempo do sinal. Além disto, a repetidora introduz diversidade de percurso sintética sob a forma de diversidade espacial ou diversidade polaridade de modo a descorrelacionar o sinal original retransmitido do sinal retardado no tempo. A repetidora pode transmitir o sinal retardado com a mesma potência do sinal original retransmitido ou pode atenuar o sinal retardado com relação ao sinal original retransmitido.
BRPI0411910-0A 2003-06-27 2004-06-28 repetidora com diversidade de percurso sintética BRPI0411910A (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US48321103P 2003-06-27 2003-06-27
US10/637,950 US7580672B2 (en) 2003-06-27 2003-08-07 Synthetic path diversity repeater
PCT/US2004/020917 WO2005004501A2 (en) 2003-06-27 2004-06-28 Synthetic path diversity repeater

Publications (1)

Publication Number Publication Date
BRPI0411910A true BRPI0411910A (pt) 2007-04-10

Family

ID=33544638

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0411910-0A BRPI0411910A (pt) 2003-06-27 2004-06-28 repetidora com diversidade de percurso sintética

Country Status (6)

Country Link
US (1) US7580672B2 (pt)
EP (1) EP1639838A4 (pt)
KR (1) KR20060025577A (pt)
BR (1) BRPI0411910A (pt)
IL (1) IL172420A0 (pt)
WO (1) WO2005004501A2 (pt)

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Also Published As

Publication number Publication date
IL172420A0 (en) 2006-04-10
US20040266338A1 (en) 2004-12-30
US7580672B2 (en) 2009-08-25
WO2005004501A3 (en) 2006-10-05
WO2005004501A2 (en) 2005-01-13
EP1639838A4 (en) 2011-09-07
KR20060025577A (ko) 2006-03-21
EP1639838A2 (en) 2006-03-29

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 8A ANUIDADE.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2159 DE 22/05/2012.

B15K Others concerning applications: alteration of classification

Free format text: PROCEDIMENTO AUTOMATICO DE RECLASSIFICACAO. AS CLASSIFICACOES IPC ANTERIORES ERAM: H04B 7/04; G01S 13/74; H04B 7/15; H04Q 7/20.

Ipc: H04B 7/155 (2006.01), G01S 13/46 (2006.01), H04B 7

Ipc: H04B 7/155 (2006.01), G01S 13/46 (2006.01), H04B 7