HK1044243A1 - Method and apparatus for mitigating interference between base stations in a wideband cdma system. - Google Patents

Method and apparatus for mitigating interference between base stations in a wideband cdma system.

Info

Publication number
HK1044243A1
HK1044243A1 HK02105835A HK02105835A HK1044243A1 HK 1044243 A1 HK1044243 A1 HK 1044243A1 HK 02105835 A HK02105835 A HK 02105835A HK 02105835 A HK02105835 A HK 02105835A HK 1044243 A1 HK1044243 A1 HK 1044243A1
Authority
HK
Hong Kong
Prior art keywords
primary synchronization
phase
rotation sequence
base stations
phase rotation
Prior art date
Application number
HK02105835A
Other languages
English (en)
Inventor
Dajsuke D Terasawa
Avneesh A Agrawal
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 HK1044243A1 publication Critical patent/HK1044243A1/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • 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
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • 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
    • H04B1/7097—Interference-related aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70706—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation with means for reducing the peak-to-average power ratio
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/0055—Synchronisation arrangements determining timing error of reception due to propagation delay
    • H04W56/0065—Synchronisation arrangements determining timing error of reception due to propagation delay using measurement of signal travel time
    • H04W56/007—Open loop measurement
    • H04W56/0075—Open loop measurement based on arrival time vs. expected arrival time
    • H04W56/0085—Open loop measurement based on arrival time vs. expected arrival time detecting a given structure in the signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)
HK02105835A 1999-06-08 2002-08-09 Method and apparatus for mitigating interference between base stations in a wideband cdma system. HK1044243A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/328,119 US6385264B1 (en) 1999-06-08 1999-06-08 Method and apparatus for mitigating interference between base stations in a wideband CDMA system
PCT/US2000/015619 WO2000076080A1 (en) 1999-06-08 2000-06-07 Method and apparatus for mitigating interference between base stations in a wideband cdma system

Publications (1)

Publication Number Publication Date
HK1044243A1 true HK1044243A1 (en) 2002-10-11

Family

ID=23279608

Family Applications (1)

Application Number Title Priority Date Filing Date
HK02105835A HK1044243A1 (en) 1999-06-08 2002-08-09 Method and apparatus for mitigating interference between base stations in a wideband cdma system.

Country Status (11)

Country Link
US (1) US6385264B1 (xx)
EP (1) EP1190497B1 (xx)
JP (1) JP2003501936A (xx)
KR (1) KR100748402B1 (xx)
CN (1) CN1152480C (xx)
AT (1) ATE308164T1 (xx)
AU (1) AU5468200A (xx)
BR (1) BR0011414A (xx)
DE (1) DE60023497T2 (xx)
HK (1) HK1044243A1 (xx)
WO (1) WO2000076080A1 (xx)

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US8169944B2 (en) 2002-10-25 2012-05-01 Qualcomm Incorporated Random access for wireless multiple-access communication systems
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US7986742B2 (en) * 2002-10-25 2011-07-26 Qualcomm Incorporated Pilots for MIMO communication system
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US7706249B2 (en) * 2006-02-08 2010-04-27 Motorola, Inc. Method and apparatus for a synchronization channel in an OFDMA system
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Also Published As

Publication number Publication date
BR0011414A (pt) 2002-04-23
KR20020009630A (ko) 2002-02-01
CN1152480C (zh) 2004-06-02
US6385264B1 (en) 2002-05-07
EP1190497B1 (en) 2005-10-26
JP2003501936A (ja) 2003-01-14
AU5468200A (en) 2000-12-28
ATE308164T1 (de) 2005-11-15
DE60023497T2 (de) 2006-08-03
CN1354917A (zh) 2002-06-19
WO2000076080A1 (en) 2000-12-14
KR100748402B1 (ko) 2007-08-10
EP1190497A1 (en) 2002-03-27
DE60023497D1 (de) 2005-12-01

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20110607