AU2001269884A1 - Method and apparatus for demodulating signals processed in transmit diversity mode - Google Patents

Method and apparatus for demodulating signals processed in transmit diversity mode

Info

Publication number
AU2001269884A1
AU2001269884A1 AU2001269884A AU6988401A AU2001269884A1 AU 2001269884 A1 AU2001269884 A1 AU 2001269884A1 AU 2001269884 A AU2001269884 A AU 2001269884A AU 6988401 A AU6988401 A AU 6988401A AU 2001269884 A1 AU2001269884 A1 AU 2001269884A1
Authority
AU
Australia
Prior art keywords
transmit diversity
signals processed
diversity mode
demodulating signals
demodulating
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
AU2001269884A
Inventor
Thunyachate Ekvetchavit
Way-Shing Lee
Douglas Neal Rowitch
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
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 AU2001269884A1 publication Critical patent/AU2001269884A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • 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
    • H04B1/70751—Synchronisation aspects with code phase acquisition using partial detection
    • 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
    • H04B1/708—Parallel implementation
    • 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
    • H04B1/709—Correlator structure
    • 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
    • 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
    • H04B1/70751—Synchronisation aspects with code phase acquisition using partial detection
    • H04B1/70752—Partial correlation
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/004—Orthogonal
AU2001269884A 2000-06-14 2001-06-14 Method and apparatus for demodulating signals processed in transmit diversity mode Abandoned AU2001269884A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09594466 2000-06-14
US09/594,466 US6628702B1 (en) 2000-06-14 2000-06-14 Method and apparatus for demodulating signals processed in a transmit diversity mode
PCT/US2001/019403 WO2001097400A2 (en) 2000-06-14 2001-06-14 Method and apparatus for demodulating signals processed in a transmit diversity mode

Publications (1)

Publication Number Publication Date
AU2001269884A1 true AU2001269884A1 (en) 2001-12-24

Family

ID=24378997

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001269884A Abandoned AU2001269884A1 (en) 2000-06-14 2001-06-14 Method and apparatus for demodulating signals processed in transmit diversity mode

Country Status (10)

Country Link
US (4) US6628702B1 (en)
EP (1) EP1290807B1 (en)
JP (1) JP5039887B2 (en)
KR (1) KR100840453B1 (en)
CN (1) CN1235345C (en)
AU (1) AU2001269884A1 (en)
BR (1) BR0111670A (en)
HK (1) HK1055180A1 (en)
TW (1) TW515148B (en)
WO (1) WO2001097400A2 (en)

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US6169789B1 (en) * 1996-12-16 2001-01-02 Sanjay K. Rao Intelligent keyboard system
US7046653B2 (en) * 1998-05-01 2006-05-16 Jan Nigrin Diversity communication system and method of operation thereof
US6628702B1 (en) * 2000-06-14 2003-09-30 Qualcomm, Incorporated Method and apparatus for demodulating signals processed in a transmit diversity mode
US20020110108A1 (en) * 2000-12-07 2002-08-15 Younglok Kim Simple block space time transmit diversity using multiple spreading codes
US7010073B2 (en) * 2001-01-19 2006-03-07 Qualcomm, Incorporated Delay lock loops for wireless communication systems
US7085313B2 (en) * 2001-02-17 2006-08-01 Koninklijke Philips Electronics N.V. Multiple channel joint decoding at mobile handset
KR100391981B1 (en) * 2001-06-16 2003-07-22 삼성전자주식회사 Apparatus for restoring data from signal transmitted by a plurality of antenna
US20030026199A1 (en) * 2001-08-03 2003-02-06 Myers Michael H. Code-division, minimum-shift-keying optical multiplexing
US6765952B2 (en) * 2002-05-06 2004-07-20 Qualcomm Incorporated Transmit diversity pilot processing
US7362799B1 (en) * 2002-06-27 2008-04-22 Arraycomm Llc Method and apparatus for communication signal resolution
CN101166054B (en) * 2002-10-25 2013-03-06 高通股份有限公司 MIMO WLAN systems
US8169944B2 (en) 2002-10-25 2012-05-01 Qualcomm Incorporated Random access for wireless multiple-access communication systems
US8208364B2 (en) 2002-10-25 2012-06-26 Qualcomm Incorporated MIMO system with multiple spatial multiplexing modes
US8134976B2 (en) 2002-10-25 2012-03-13 Qualcomm Incorporated Channel calibration for a time division duplexed communication system
US7002900B2 (en) 2002-10-25 2006-02-21 Qualcomm Incorporated Transmit diversity processing for a multi-antenna communication system
CN101242214B (en) * 2002-10-25 2012-09-05 高通股份有限公司 Method for generating pilots for MIMO communication systems
US20040081131A1 (en) 2002-10-25 2004-04-29 Walton Jay Rod OFDM communication system with multiple OFDM symbol sizes
US7986742B2 (en) 2002-10-25 2011-07-26 Qualcomm Incorporated Pilots for MIMO communication system
US8320301B2 (en) 2002-10-25 2012-11-27 Qualcomm Incorporated MIMO WLAN system
US7280467B2 (en) * 2003-01-07 2007-10-09 Qualcomm Incorporated Pilot transmission schemes for wireless multi-carrier communication systems
US7127013B2 (en) * 2003-08-18 2006-10-24 Airgo Networks, Inc. Spacetime equalization in a wireless receiver
US7751520B1 (en) * 2003-09-17 2010-07-06 Atheros Communications, Inc. Packet detection, synchronization, and frequency offset estimation
US9473269B2 (en) 2003-12-01 2016-10-18 Qualcomm Incorporated Method and apparatus for providing an efficient control channel structure in a wireless communication system
US8139685B2 (en) 2005-05-10 2012-03-20 Qualcomm Incorporated Systems, methods, and apparatus for frequency control
US7466749B2 (en) 2005-05-12 2008-12-16 Qualcomm Incorporated Rate selection with margin sharing
US7684508B1 (en) * 2005-05-27 2010-03-23 Mediatek Incorporation Transmission diversity detecting apparatus capable of generating quality indicator and related method thereof
US8422552B2 (en) * 2007-03-29 2013-04-16 James Au Entropy coding for video processing applications
US7953284B2 (en) * 2007-03-29 2011-05-31 James Au Selective information handling for video processing
US8369411B2 (en) * 2007-03-29 2013-02-05 James Au Intra-macroblock video processing
US8416857B2 (en) * 2007-03-29 2013-04-09 James Au Parallel or pipelined macroblock processing
US8837575B2 (en) * 2007-03-29 2014-09-16 Cisco Technology, Inc. Video processing architecture
JP4794583B2 (en) * 2008-01-29 2011-10-19 住友電気工業株式会社 Multi-antenna communication apparatus and transmission method
US8335283B1 (en) * 2008-11-11 2012-12-18 Qualcomm Atheros, Inc. Weak signal detection in wireless communication systems
US8179774B2 (en) * 2009-01-30 2012-05-15 Lantiq Deutschland Gmbh Cross-talk coefficient updating in vector transmission
CN103209048B (en) * 2012-01-13 2017-04-12 华为技术有限公司 Special pilot frequency decoding method and user equipment

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Publication number Priority date Publication date Assignee Title
US4901307A (en) 1986-10-17 1990-02-13 Qualcomm, Inc. Spread spectrum multiple access communication system using satellite or terrestrial repeaters
US5103459B1 (en) * 1990-06-25 1999-07-06 Qualcomm Inc System and method for generating signal waveforms in a cdma cellular telephone system
ZA938324B (en) * 1992-11-24 1994-06-07 Qualcomm Inc Pilot carrier dot product circuit
US5490165A (en) * 1993-10-28 1996-02-06 Qualcomm Incorporated Demodulation element assignment in a system capable of receiving multiple signals
JP2605615B2 (en) * 1993-12-30 1997-04-30 日本電気株式会社 Spread spectrum receiver
US5710768A (en) 1994-09-30 1998-01-20 Qualcomm Incorporated Method of searching for a bursty signal
US5764687A (en) * 1995-06-20 1998-06-09 Qualcomm Incorporated Mobile demodulator architecture for a spread spectrum multiple access communication system
US6574211B2 (en) * 1997-11-03 2003-06-03 Qualcomm Incorporated Method and apparatus for high rate packet data transmission
US6748010B1 (en) * 1998-10-13 2004-06-08 Qualcomm Incorporated Combined searching and page monitoring using offline sample storage
US6229839B1 (en) * 1999-02-08 2001-05-08 Qualcomm Incorporated Method and apparatus for time tracking
US6515978B1 (en) * 1999-04-19 2003-02-04 Lucent Technologies Inc. Methods and apparatus for downlink diversity in CDMA using Walsh codes
US6414988B1 (en) * 1999-05-12 2002-07-02 Qualcomm Incorporated Amplitude and phase estimation method in a wireless communication system
US6594286B2 (en) * 1999-08-12 2003-07-15 Qualcomm Incorporated Method and apparatus for coherent demodulation in communication system employing a potentially gated pilot signal
US6628702B1 (en) * 2000-06-14 2003-09-30 Qualcomm, Incorporated Method and apparatus for demodulating signals processed in a transmit diversity mode

Also Published As

Publication number Publication date
KR20030007901A (en) 2003-01-23
US7684474B2 (en) 2010-03-23
US6628702B1 (en) 2003-09-30
WO2001097400A2 (en) 2001-12-20
US20040042536A1 (en) 2004-03-04
US7623566B2 (en) 2009-11-24
EP1290807A2 (en) 2003-03-12
JP2004503982A (en) 2004-02-05
JP5039887B2 (en) 2012-10-03
WO2001097400A3 (en) 2002-03-28
US7184463B2 (en) 2007-02-27
US20070116102A1 (en) 2007-05-24
HK1055180A1 (en) 2003-12-24
US20070116101A1 (en) 2007-05-24
TW515148B (en) 2002-12-21
CN1436407A (en) 2003-08-13
EP1290807B1 (en) 2014-06-11
BR0111670A (en) 2003-10-07
CN1235345C (en) 2006-01-04
KR100840453B1 (en) 2008-06-20

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