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IT1293447B1 - Procedimento e sistema per la ricezione di segnali digitali - Google Patents

Procedimento e sistema per la ricezione di segnali digitali

Info

Publication number
IT1293447B1
IT1293447B1 IT97TO000633A ITTO970633A IT1293447B1 IT 1293447 B1 IT1293447 B1 IT 1293447B1 IT 97TO000633 A IT97TO000633 A IT 97TO000633A IT TO970633 A ITTO970633 A IT TO970633A IT 1293447 B1 IT1293447 B1 IT 1293447B1
Authority
IT
Italy
Prior art keywords
reception
procedure
digital signals
digital
signals
Prior art date
Application number
IT97TO000633A
Other languages
English (en)
Inventor
Andrew Peter Ansbro
Spase Drakul
Antonio Fanigliulo
Gianluca Fontana
Original Assignee
Cselt Centro Studi Lab Telecom
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 Cselt Centro Studi Lab Telecom filed Critical Cselt Centro Studi Lab Telecom
Priority to IT97TO000633A priority Critical patent/IT1293447B1/it
Priority to US09/080,043 priority patent/US6330294B1/en
Priority to NO19982248A priority patent/NO317331B1/no
Priority to EP98108856A priority patent/EP0892504A3/en
Publication of ITTO970633A1 publication Critical patent/ITTO970633A1/it
Application granted granted Critical
Publication of IT1293447B1 publication Critical patent/IT1293447B1/it

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
    • 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
    • H04B7/0848—Joint weighting
    • H04B7/0851—Joint weighting using training sequences or error signal
    • 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
    • H04B7/0845—Weighted combining per branch equalization, e.g. by an FIR-filter or RAKE receiver per antenna branch
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)
  • Circuits Of Receivers In General (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Communication Control (AREA)
IT97TO000633A 1997-07-14 1997-07-14 Procedimento e sistema per la ricezione di segnali digitali IT1293447B1 (it)

Priority Applications (4)

Application Number Priority Date Filing Date Title
IT97TO000633A IT1293447B1 (it) 1997-07-14 1997-07-14 Procedimento e sistema per la ricezione di segnali digitali
US09/080,043 US6330294B1 (en) 1997-07-14 1998-05-15 Method of and apparatus for digital radio signal reception
NO19982248A NO317331B1 (no) 1997-07-14 1998-05-15 Fremgangsmate og anordning for digitalt radiosignalmottak
EP98108856A EP0892504A3 (en) 1997-07-14 1998-05-15 Method of and apparatus for digital radio signal reception

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT97TO000633A IT1293447B1 (it) 1997-07-14 1997-07-14 Procedimento e sistema per la ricezione di segnali digitali

Publications (2)

Publication Number Publication Date
ITTO970633A1 ITTO970633A1 (it) 1999-01-14
IT1293447B1 true IT1293447B1 (it) 1999-03-01

Family

ID=11415868

Family Applications (1)

Application Number Title Priority Date Filing Date
IT97TO000633A IT1293447B1 (it) 1997-07-14 1997-07-14 Procedimento e sistema per la ricezione di segnali digitali

Country Status (4)

Country Link
US (1) US6330294B1 (it)
EP (1) EP0892504A3 (it)
IT (1) IT1293447B1 (it)
NO (1) NO317331B1 (it)

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US6650714B2 (en) * 2000-11-30 2003-11-18 Arraycomm, Inc. Spatial processing and timing estimation using a training sequence in a radio communications system
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FR2814885B1 (fr) 2000-10-03 2003-05-30 Mitsubishi Electric Inf Tech Methode de synchronisation de stations de base
JP3802488B2 (ja) * 2000-12-27 2006-07-26 三洋電機株式会社 無線装置、スワップ検出方法およびスワップ検出プログラム
US7170924B2 (en) 2001-05-17 2007-01-30 Qualcomm, Inc. System and method for adjusting combiner weights using an adaptive algorithm in wireless communications system
US6990137B2 (en) 2001-05-17 2006-01-24 Qualcomm, Incorporated System and method for received signal prediction in wireless communications systems
US8249187B2 (en) 2002-05-09 2012-08-21 Google Inc. System, method and apparatus for mobile transmit diversity using symmetric phase difference
CN1545770B (zh) * 2001-05-31 2013-03-06 马格诺利亚宽带股份有限公司 通信方法和设备以及用于改进通信设备的系统性能的方法
EP1763157A3 (en) * 2002-02-14 2007-06-27 Interdigital Technology Corporation Wireless communication system having an adaptive threshold for timing deviation measurement, and method
US6873662B2 (en) 2002-02-14 2005-03-29 Interdigital Technology Corporation Wireless communication system having adaptive threshold for timing deviation measurement and method
US7505741B2 (en) * 2002-11-01 2009-03-17 Magnolia Broadband Inc. Processing diversity signals using a delay
GB2395871B (en) * 2002-11-28 2006-01-11 Toshiba Res Europ Ltd Signal estimation methods and apparatus
CN100492937C (zh) * 2002-12-27 2009-05-27 Nxp股份有限公司 具有多天线的移动终端及其方法
CN100576772C (zh) 2002-12-27 2009-12-30 Nxp股份有限公司 具有智能天线的移动终端及其方法
JP3891427B2 (ja) * 2002-12-27 2007-03-14 富士通株式会社 適応アレーアンテナ制御装置
US7187736B2 (en) * 2003-02-13 2007-03-06 Motorola Inc. Reducing interference in a GSM communication system
US7418067B1 (en) 2003-04-14 2008-08-26 Magnolia Broadband Inc. Processing diversity signals at a mobile device using phase adjustments
US7746967B2 (en) 2003-04-30 2010-06-29 Intel Corporation Beam-former and combiner for a multiple-antenna system
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US7430430B2 (en) * 2003-12-16 2008-09-30 Magnolia Broadband Inc. Adjusting a signal at a diversity system
US7272359B2 (en) * 2004-01-26 2007-09-18 Magnolia Broadband Inc. Communicating signals according to a quality indicator using multiple antenna elements
US7433434B2 (en) * 2004-10-01 2008-10-07 General Dynamics C4 Systems, Inc. Communication channel tracking apparatus
US7558591B2 (en) * 2004-10-12 2009-07-07 Magnolia Broadband Inc. Determining a power control group boundary of a power control group
US7515877B2 (en) * 2004-11-04 2009-04-07 Magnolia Broadband Inc. Communicating signals according to a quality indicator and a time boundary indicator
US7616930B2 (en) * 2005-05-24 2009-11-10 Magnolia Broadband Inc. Determining a phase adjustment in accordance with power trends
US20060267983A1 (en) * 2005-05-24 2006-11-30 Magnolia Broadband Inc. Modifying a signal by adjusting the phase and amplitude of the signal
US7783267B1 (en) 2005-06-23 2010-08-24 Magnolia Broadband Inc. Modifying a signal in response to quality indicator availability
US7643590B2 (en) * 2005-08-23 2010-01-05 Research In Motion Limited Joint demodulation filter for co-channel interference reduction and related methods
US7639763B2 (en) * 2005-08-23 2009-12-29 Research In Motion Limited Wireless communications device including a joint demodulation filter for co-channel interference reduction and related methods
CA2516910A1 (en) * 2005-08-23 2007-02-23 Research In Motion Limited Joint demodulation techniques for interference cancellation
US7633905B1 (en) 2005-09-02 2009-12-15 Magnolia Broadband Inc. Calibrating a transmit diversity communication device
US7835702B1 (en) 2005-09-15 2010-11-16 Magnolia Broadband Inc. Calculating a diversity parameter adjustment according to previously applied diversity parameter adjustments
US7746946B2 (en) * 2005-10-10 2010-06-29 Magnolia Broadband Inc. Performing a scan of diversity parameter differences
US7630445B1 (en) 2005-10-25 2009-12-08 Magnolia Broadband Inc. Establishing slot boundaries of slots of a diversity control feedback signal
US7796717B2 (en) * 2005-11-02 2010-09-14 Magnolia Brandband Inc. Modifying a signal according to a diversity parameter adjustment
US7965987B2 (en) * 2005-11-03 2011-06-21 Magnolia Broadband Inc. Amplifying a transmit signal using a fractional power amplifier
US7949069B2 (en) * 2006-10-26 2011-05-24 Magnolia Broadband Inc. Method, system and apparatus for applying hybrid ARQ to the control of transmit diversity
US8150441B2 (en) * 2006-11-06 2012-04-03 Magnolia Broadband Inc. Modifying a signal by controlling transmit diversity parameters
US8199735B2 (en) * 2006-12-12 2012-06-12 Google Inc. Method, system and apparatus for the control of transmit diversity
US7663545B2 (en) * 2006-12-26 2010-02-16 Magnolia Broadband Inc. Method, system and apparatus for determining antenna weighting for transmit diversity
US8027374B2 (en) * 2006-12-27 2011-09-27 Magnolia Broadband Inc. Method, system and apparatus for transmit diversity control
US20080160990A1 (en) * 2006-12-29 2008-07-03 Yair Karmi System, method and apparatus for identification of power control using reverse rate indication
US7869535B2 (en) * 2007-02-28 2011-01-11 Magnolia Broadband Inc. Method, system and apparatus for phase control of transmit diversity signals
US7991365B2 (en) * 2007-03-01 2011-08-02 Magnolia Broadband Inc. Method, system and apparatus for estimation of propagation path variability of a transmit diversity channel
US20080227414A1 (en) 2007-03-01 2008-09-18 Yair Karmi System, method and apparatus for transmit diversity control based on variations in propagation path
EP2143213B1 (en) * 2007-03-14 2011-05-11 Magnolia Broadband, Inc. Method, apparatus and system for providing transmit diversity feedback
US8750811B2 (en) * 2007-03-14 2014-06-10 Google Inc. Method, apparatus and system for phase difference adjustment in transmit diversity
US8032091B2 (en) 2007-03-14 2011-10-04 Magnolia Broadband Inc. Method, apparatus and system for providing transmit diversity feedback during soft handoff
US8699968B2 (en) 2007-03-14 2014-04-15 Google Inc. Using multiple and a single feedback for UE uplink beamforming in soft handoff
US8046017B2 (en) * 2007-03-15 2011-10-25 Magnolia Broadband Inc. Method and apparatus for random access channel probe initialization using transmit diversity
US8014734B2 (en) * 2007-03-15 2011-09-06 Magnolia Broadband Inc. Method, apparatus and system for controlling a transmit diversity device
US8731489B2 (en) 2007-03-15 2014-05-20 Google Inc. Method and apparatus for random access channel probe initialization using transmit diversity
US8036603B2 (en) * 2007-03-15 2011-10-11 Magnolia Broadband Inc. Method, apparatus and system for providing feedback to a transmit diversity device
US8032092B2 (en) * 2007-12-06 2011-10-04 Magnolia Broadband Inc. System, apparatus and method for introducing antenna pattern variability
CN101778061B (zh) * 2009-01-12 2013-01-30 瑞昱半导体股份有限公司 具有适应性信道估测功能的接收系统及适应性信道估测器
US8442457B2 (en) 2009-09-08 2013-05-14 Google Inc. System and method for adaptive beamforming for specific absorption rate control
US8958757B2 (en) 2010-05-10 2015-02-17 Google Inc. System, method and apparatus for mobile transmit diversity using symmetric phase difference
US9048913B2 (en) 2010-07-06 2015-06-02 Google Inc. Method and apparatus for adaptive control of transmit diversity to provide operating power reduction
US8849222B2 (en) 2011-02-16 2014-09-30 Google Inc. Method and device for phase adjustment based on closed-loop diversity feedback

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Also Published As

Publication number Publication date
US6330294B1 (en) 2001-12-11
ITTO970633A1 (it) 1999-01-14
EP0892504A3 (en) 2000-07-19
EP0892504A2 (en) 1999-01-20
NO982248L (no) 1999-01-15
NO982248D0 (no) 1998-05-15
NO317331B1 (no) 2004-10-11

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