BRPI0609235A2 - posicionamento de pilotos para transmissão multicast em ofdm - Google Patents

posicionamento de pilotos para transmissão multicast em ofdm Download PDF

Info

Publication number
BRPI0609235A2
BRPI0609235A2 BRPI0609235-7A BRPI0609235A BRPI0609235A2 BR PI0609235 A2 BRPI0609235 A2 BR PI0609235A2 BR PI0609235 A BRPI0609235 A BR PI0609235A BR PI0609235 A2 BRPI0609235 A2 BR PI0609235A2
Authority
BR
Brazil
Prior art keywords
pilot
symbol
tdm
local area
wide area
Prior art date
Application number
BRPI0609235-7A
Other languages
English (en)
Portuguese (pt)
Inventor
Krishna Kiran Mukkavilli
Raghuraman Krishnamoorthi
Ashok Mantravadi
Michael Mao Wang
Bojan Vrcelj
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 BRPI0609235A2 publication Critical patent/BRPI0609235A2/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • H04L27/26134—Pilot insertion in the transmitter chain, e.g. pilot overlapping with data, insertion in time or frequency domain
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
    • H04L25/023—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2668—Details of algorithms
    • H04L27/2673—Details of algorithms characterised by synchronisation parameters
    • H04L27/2675—Pilot or known symbols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2689—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation
    • H04L27/2695—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation with channel estimation, e.g. determination of delay spread, derivative or peak tracking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • H04L27/26136—Pilot sequence conveying additional information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
BRPI0609235-7A 2005-03-10 2006-03-10 posicionamento de pilotos para transmissão multicast em ofdm BRPI0609235A2 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US66090705P 2005-03-10 2005-03-10
US60/660,907 2005-03-10
PCT/US2006/008954 WO2006099326A1 (en) 2005-03-10 2006-03-10 Pilots positioning for multicast transmission in ofdm

Publications (1)

Publication Number Publication Date
BRPI0609235A2 true BRPI0609235A2 (pt) 2010-03-09

Family

ID=36589028

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0609235-7A BRPI0609235A2 (pt) 2005-03-10 2006-03-10 posicionamento de pilotos para transmissão multicast em ofdm

Country Status (14)

Country Link
US (2) US7813383B2 (enExample)
EP (3) EP1872545B1 (enExample)
JP (4) JP4991692B2 (enExample)
KR (1) KR100910947B1 (enExample)
CN (1) CN101194480B (enExample)
AT (1) ATE450962T1 (enExample)
BR (1) BRPI0609235A2 (enExample)
CA (1) CA2600557A1 (enExample)
DE (1) DE602006010842D1 (enExample)
ES (1) ES2337827T3 (enExample)
MY (1) MY155227A (enExample)
PL (1) PL1872545T3 (enExample)
TW (2) TWI383630B (enExample)
WO (1) WO2006099326A1 (enExample)

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US9246728B2 (en) 2004-07-29 2016-01-26 Qualcomm Incorporated System and method for frequency diversity
US7813383B2 (en) * 2005-03-10 2010-10-12 Qualcomm Incorporated Method for transmission of time division multiplexed pilot symbols to aid channel estimation, time synchronization, and AGC bootstrapping in a multicast wireless system
US9042212B2 (en) 2005-07-29 2015-05-26 Qualcomm Incorporated Method and apparatus for communicating network identifiers in a communication system
US9391751B2 (en) 2005-07-29 2016-07-12 Qualcomm Incorporated System and method for frequency diversity
US8638771B2 (en) 2005-08-12 2014-01-28 Qualcomm Incorporated Transmission structure supporting multi-user scheduling and MIMO transmission
US7706328B2 (en) 2006-01-04 2010-04-27 Qualcomm Incorporated Methods and apparatus for position location in a wireless network
US7782806B2 (en) 2006-03-09 2010-08-24 Qualcomm Incorporated Timing synchronization and channel estimation at a transition between local and wide area waveforms using a designated TDM pilot
TW200812274A (en) 2006-06-16 2008-03-01 Qualcomm Inc Progressively broadcasting information in beacon signals
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US8457064B2 (en) * 2007-03-21 2013-06-04 Qualcomm Incorporated Methods and apparatus for RF handoff in a multi-frequency network
US8948757B2 (en) * 2007-03-21 2015-02-03 Qualcomm Incorporated Methods and apparatus for RF handoff in a multi-frequency network
US8750248B2 (en) * 2007-03-21 2014-06-10 Qualcomm Incorporated Methods and apparatus for RF handoff in a multi-frequency network
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US8565799B2 (en) * 2007-04-04 2013-10-22 Qualcomm Incorporated Methods and apparatus for flow data acquisition in a multi-frequency network
US8532066B2 (en) * 2007-10-18 2013-09-10 Qualcomm Incorporated Transmission structure supporting multi-user scheduling and MIMO transmission
US8165064B2 (en) 2008-01-28 2012-04-24 Qualcomm Incorporated Enhancements to the positioning pilot channel
US8570939B2 (en) 2008-03-07 2013-10-29 Qualcomm Incorporated Methods and systems for choosing cyclic delays in multiple antenna OFDM systems
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US8614975B2 (en) 2008-09-19 2013-12-24 Qualcomm Incorporated Synchronizing a base station in a wireless communication system
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US8982851B2 (en) * 2009-01-06 2015-03-17 Qualcomm Incorporated Hearability improvements for reference signals
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US9091746B2 (en) 2010-07-01 2015-07-28 Qualcomm Incorporated Determination of positions of wireless transceivers to be added to a wireless communication network
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CN103744095B (zh) * 2013-12-16 2016-05-11 苏州锘网电子科技有限公司 一种多载波传输定位系统及方法
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US11563505B2 (en) 2016-06-01 2023-01-24 Qualcomm Incorporated Time division multiplexing of synchronization channels
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US10887035B2 (en) 2016-06-01 2021-01-05 Qualcomm Incorporated Time division multiplexing of synchronization channels
US11218236B2 (en) * 2016-06-01 2022-01-04 Qualcomm Incorporated Time division multiplexing of synchronization channels
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Also Published As

Publication number Publication date
TWI483595B (zh) 2015-05-01
US20060250937A1 (en) 2006-11-09
TW201306528A (zh) 2013-02-01
CN101194480B (zh) 2014-09-10
JP5290374B2 (ja) 2013-09-18
US7813383B2 (en) 2010-10-12
PL1872545T3 (pl) 2010-05-31
JP4991692B2 (ja) 2012-08-01
EP2151967A2 (en) 2010-02-10
JP2012054949A (ja) 2012-03-15
MY155227A (en) 2015-09-30
EP2264962A2 (en) 2010-12-22
JP2011091829A (ja) 2011-05-06
EP2151967A3 (en) 2010-07-28
CA2600557A1 (en) 2006-09-21
EP1872545A1 (en) 2008-01-02
KR100910947B1 (ko) 2009-08-05
KR20070110925A (ko) 2007-11-20
WO2006099326A1 (en) 2006-09-21
JP5021803B2 (ja) 2012-09-12
US20110080924A1 (en) 2011-04-07
US8432933B2 (en) 2013-04-30
ATE450962T1 (de) 2009-12-15
TW200705910A (en) 2007-02-01
EP2264962B1 (en) 2014-08-27
DE602006010842D1 (de) 2010-01-14
JP2013062818A (ja) 2013-04-04
JP2008533866A (ja) 2008-08-21
CN101194480A (zh) 2008-06-04
TWI383630B (zh) 2013-01-21
JP5587377B2 (ja) 2014-09-10
EP2264962A3 (en) 2012-02-15
EP1872545B1 (en) 2009-12-02
ES2337827T3 (es) 2010-04-29

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Legal Events

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B11A Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing
B11Y Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette]