IN2012DN01928A - - Google Patents

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Publication number
IN2012DN01928A IN1928DEN2012A IN2012DN01928A IN 2012DN01928 A IN2012DN01928 A IN 2012DN01928A IN 1928DEN2012 A IN1928DEN2012 A IN 1928DEN2012A IN 2012DN01928 A IN2012DN01928 A IN 2012DN01928A
Prior art keywords
jacobi rotation
Prior art date
Application number
W Ketchum John
Rodney Walton J
Wallace Mark
J Howard Steven
Inanoglu Hakan
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
Priority to US62832404P priority Critical
Priority to PCT/US2005/041783 priority patent/WO2006053340A2/en
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of IN2012DN01928A publication Critical patent/IN2012DN01928A/en



    • H04L25/00Baseband systems
    • H04L25/02Details ; Arrangements for supplying electrical power along data transmission lines
    • H04L25/0202Channel estimation
    • H04L25/024Channel estimation channel estimation algorithms
    • H04L25/0242Channel estimation channel estimation algorithms using matrix methods
    • H04L25/0248Eigen-space methods
    • G06F17/00Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10Complex mathematical operations
    • G06F17/16Matrix or vector computation, e.g. matrix-matrix or matrix-vector multiplication, matrix factorization


An apparatus comprising: at least one processor configured to initialize a first matrix to an identity matrix, to initialize a second matrix to a Hermitian matrix of complex values, to perform a plurality of iterations of Jacobi rotation on the second matrix by forming a Jacobi rotation matrix of complex values for each iteration based on the second matrix, and updating the first and second matrices for each iteration based on the Jacobi rotation matrix for the iteration, to provide the first matrix as a matrix of eigenvectors, and to provide the second matrix as a matrix of eigenvalues; and a memory coupled to the at least one processor.
IN1928DEN2012 2004-11-15 2007-11-15 IN2012DN01928A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US62832404P true 2004-11-15 2004-11-15
PCT/US2005/041783 WO2006053340A2 (en) 2004-11-15 2005-11-15 Eigenvalue decomposition and singular value decomposition of matrices using jacobi rotation

Publications (1)

Publication Number Publication Date
IN2012DN01928A true IN2012DN01928A (en) 2015-07-24



Family Applications (1)

Application Number Title Priority Date Filing Date
IN1928DEN2012 IN2012DN01928A (en) 2004-11-15 2007-11-15

Country Status (9)

Country Link
EP (1) EP1828923A2 (en)
JP (1) JP4648401B2 (en)
KR (2) KR20090115822A (en)
CN (2) CN101390351B (en)
AR (1) AR051497A1 (en)
CA (1) CA2588176C (en)
IN (1) IN2012DN01928A (en)
TW (1) TWI407320B (en)
WO (1) WO2006053340A2 (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8204149B2 (en) 2003-12-17 2012-06-19 Qualcomm Incorporated Spatial spreading in a multi-antenna communication system
US7336746B2 (en) 2004-12-09 2008-02-26 Qualcomm Incorporated Data transmission with spatial spreading in a MIMO communication system
US8285226B2 (en) 2004-05-07 2012-10-09 Qualcomm Incorporated Steering diversity for an OFDM-based multi-antenna communication system
US8923785B2 (en) 2004-05-07 2014-12-30 Qualcomm Incorporated Continuous beamforming for a MIMO-OFDM system
US7978649B2 (en) 2004-07-15 2011-07-12 Qualcomm, Incorporated Unified MIMO transmission and reception
US7602855B2 (en) * 2005-04-01 2009-10-13 Interdigital Technology Corporation Method and apparatus for singular value decomposition of a channel matrix
US8543070B2 (en) 2006-04-24 2013-09-24 Qualcomm Incorporated Reduced complexity beam-steered MIMO OFDM system
US8290089B2 (en) 2006-05-22 2012-10-16 Qualcomm Incorporated Derivation and feedback of transmit steering matrix
KR101325434B1 (en) * 2006-08-17 2013-11-04 인텔 코포레이션 Method and apparatus for providing efficient precoding feedback in a mimo wireless communication system
CN101488759B (en) * 2009-02-24 2012-04-11 东南大学 Decoding method for MIMO OFDM system low density correcting code
CN101908123B (en) * 2010-06-01 2012-06-27 福建新大陆电脑股份有限公司 Hardware logic implementation device for Hough operation
CN102013907B (en) * 2010-09-29 2013-12-11 中国科学院声学研究所 Channel information feedback method of beam shaping system with Mt*2MIMO (Multiple Input Multiple Output) characteristic
CN103780330B (en) * 2012-10-19 2017-04-26 华为技术有限公司 Signal transmission method, system and device
CN105323037A (en) * 2014-08-01 2016-02-10 中国移动通信集团公司 Pre-coding method and device according to complex matrix
CN105323036A (en) * 2014-08-01 2016-02-10 中国移动通信集团公司 Method and device for performing singular value decomposition on complex matrix and computing equipment
CN105871503B (en) * 2015-01-22 2019-03-12 华邦电子股份有限公司 Multiple input, multiple output wireless communication system and its channel decomposition method
CN104618293B (en) * 2015-01-27 2017-11-28 东南大学 A kind of optimization method of the unitary transformation matrix of smooth singular value decomposition
CN104636632B (en) * 2015-03-10 2017-12-15 中国人民解放军国防科学技术大学 The small amount of storage computation of table lookup method of high-precision phase position
CN105403865B (en) * 2015-10-23 2017-10-27 河海大学 Multi-carrier signal constant envelope modulation methodology
CN110110285B (en) * 2019-04-10 2020-05-22 浙江大学 Parallel Jacobi calculation acceleration implementation method for FPGA
CN110531866B (en) * 2019-10-29 2020-03-13 深圳市瑞立视多媒体科技有限公司 Method for performing attitude calculation based on improved inverse kinematics and related equipment

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2976888B2 (en) * 1996-06-27 1999-11-10 日本電気株式会社 Circuit simulation method
DE19626984C1 (en) * 1996-07-04 1997-11-27 Siemens Ag Process for computer-aided determination of a system context function
US6510354B1 (en) * 1999-04-21 2003-01-21 Ching-Fang Lin Universal robust filtering process
US6859747B2 (en) * 2001-04-26 2005-02-22 Siemens Energy & Automation, Inc. Method and apparatus for self-calibrating a motion control system
US7327800B2 (en) * 2002-05-24 2008-02-05 Vecima Networks Inc. System and method for data detection in wireless communication systems

Also Published As

Publication number Publication date
CN101390351B (en) 2012-10-10
CA2588176A1 (en) 2006-05-18
TW200703039A (en) 2007-01-16
CN101390351A (en) 2009-03-18
CN101438277A (en) 2009-05-20
WO2006053340A2 (en) 2006-05-18
JP2008521294A (en) 2008-06-19
WO2006053340A3 (en) 2008-07-31
AR051497A1 (en) 2007-01-17
KR101084792B1 (en) 2011-11-21
EP1828923A2 (en) 2007-09-05
TWI407320B (en) 2013-09-01
KR20070086178A (en) 2007-08-27
JP4648401B2 (en) 2011-03-09
CA2588176C (en) 2012-10-16
KR20090115822A (en) 2009-11-06

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