MXPA03003564A - Metodo y aparato para el calculo del canal de clasificacion reducido en un sistema de comunicacion. - Google Patents

Metodo y aparato para el calculo del canal de clasificacion reducido en un sistema de comunicacion.

Info

Publication number
MXPA03003564A
MXPA03003564A MXPA03003564A MXPA03003564A MXPA03003564A MX PA03003564 A MXPA03003564 A MX PA03003564A MX PA03003564 A MXPA03003564 A MX PA03003564A MX PA03003564 A MXPA03003564 A MX PA03003564A MX PA03003564 A MXPA03003564 A MX PA03003564A
Authority
MX
Mexico
Prior art keywords
communications system
channel estimation
reduced rank
rank channel
reduced
Prior art date
Application number
MXPA03003564A
Other languages
English (en)
Inventor
Josef J Blanz
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 MXPA03003564A publication Critical patent/MXPA03003564A/es

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/10Polarisation diversity; Directional diversity
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Power Engineering (AREA)
  • Radio Transmission System (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
MXPA03003564A 2000-10-23 2001-10-19 Metodo y aparato para el calculo del canal de clasificacion reducido en un sistema de comunicacion. MXPA03003564A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/694,432 US6907270B1 (en) 2000-10-23 2000-10-23 Method and apparatus for reduced rank channel estimation in a communications system
PCT/US2001/050068 WO2002060138A2 (en) 2000-10-23 2001-10-19 Method and apparatus for producing a channel estimate with reduced rank

Publications (1)

Publication Number Publication Date
MXPA03003564A true MXPA03003564A (es) 2003-10-06

Family

ID=24788795

Family Applications (1)

Application Number Title Priority Date Filing Date
MXPA03003564A MXPA03003564A (es) 2000-10-23 2001-10-19 Metodo y aparato para el calculo del canal de clasificacion reducido en un sistema de comunicacion.

Country Status (13)

Country Link
US (1) US6907270B1 (es)
EP (1) EP1329069A2 (es)
JP (1) JP4508529B2 (es)
KR (1) KR100810180B1 (es)
CN (1) CN1471779A (es)
BR (1) BR0114769A (es)
CA (1) CA2426650A1 (es)
IL (1) IL155532A0 (es)
MX (1) MXPA03003564A (es)
NO (1) NO20031780L (es)
RU (1) RU2292655C2 (es)
TW (1) TW533714B (es)
WO (1) WO2002060138A2 (es)

Families Citing this family (123)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7952511B1 (en) 1999-04-07 2011-05-31 Geer James L Method and apparatus for the detection of objects using electromagnetic wave attenuation patterns
US9130810B2 (en) 2000-09-13 2015-09-08 Qualcomm Incorporated OFDM communications methods and apparatus
US7295509B2 (en) 2000-09-13 2007-11-13 Qualcomm, Incorporated Signaling method in an OFDM multiple access system
US8670390B2 (en) 2000-11-22 2014-03-11 Genghiscomm Holdings, LLC Cooperative beam-forming in wireless networks
US7230910B2 (en) * 2001-01-30 2007-06-12 Lucent Technologies Inc. Optimal channel sounding system
US7058147B2 (en) * 2001-02-28 2006-06-06 At&T Corp. Efficient reduced complexity windowed optimal time domain equalizer for discrete multitone-based DSL modems
US7248638B1 (en) * 2001-03-23 2007-07-24 Lsi Logic Transmit antenna multi-mode tracking
US10931338B2 (en) 2001-04-26 2021-02-23 Genghiscomm Holdings, LLC Coordinated multipoint systems
US10355720B2 (en) 2001-04-26 2019-07-16 Genghiscomm Holdings, LLC Distributed software-defined radio
US10425135B2 (en) 2001-04-26 2019-09-24 Genghiscomm Holdings, LLC Coordinated multipoint systems
US9893774B2 (en) 2001-04-26 2018-02-13 Genghiscomm Holdings, LLC Cloud radio access network
US9819449B2 (en) 2002-05-14 2017-11-14 Genghiscomm Holdings, LLC Cooperative subspace demultiplexing in content delivery networks
JP3731554B2 (ja) * 2002-03-19 2006-01-05 ソニー株式会社 信号処理装置、信号処理方法
US9628231B2 (en) 2002-05-14 2017-04-18 Genghiscomm Holdings, LLC Spreading and precoding in OFDM
US10644916B1 (en) 2002-05-14 2020-05-05 Genghiscomm Holdings, LLC Spreading and precoding in OFDM
US9270421B2 (en) * 2002-05-14 2016-02-23 Genghiscomm Holdings, LLC Cooperative subspace demultiplexing in communication networks
US9225471B2 (en) * 2002-05-14 2015-12-29 Genghiscomm Holdings, LLC Cooperative subspace multiplexing in communication networks
US10200227B2 (en) 2002-05-14 2019-02-05 Genghiscomm Holdings, LLC Pre-coding in multi-user MIMO
US10142082B1 (en) 2002-05-14 2018-11-27 Genghiscomm Holdings, LLC Pre-coding in OFDM
EP1540832B1 (en) * 2002-08-29 2016-04-13 Callahan Cellular L.L.C. Method for separating interferering signals and computing arrival angles
CN101242214B (zh) * 2002-10-25 2012-09-05 高通股份有限公司 无线多输入多输出通信系统内生成导频的方法
US8169944B2 (en) 2002-10-25 2012-05-01 Qualcomm Incorporated Random access for wireless multiple-access communication systems
US20040081131A1 (en) 2002-10-25 2004-04-29 Walton Jay Rod OFDM communication system with multiple OFDM symbol sizes
US7002900B2 (en) 2002-10-25 2006-02-21 Qualcomm Incorporated Transmit diversity processing for a multi-antenna communication system
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
CN1717901A (zh) * 2002-10-25 2006-01-04 高通股份有限公司 无线多址通信系统的随机接入
US8570988B2 (en) 2002-10-25 2013-10-29 Qualcomm Incorporated Channel calibration for a time division duplexed communication system
US8134976B2 (en) 2002-10-25 2012-03-13 Qualcomm Incorporated Channel calibration for a time division duplexed communication system
US8208364B2 (en) 2002-10-25 2012-06-26 Qualcomm Incorporated MIMO system with multiple spatial multiplexing modes
US7376106B2 (en) * 2002-11-27 2008-05-20 International Business Machines Corporation Code-division-multiple-access (DS-CDMA) channels with aperiodic codes
CN1203637C (zh) * 2003-01-07 2005-05-25 大唐移动通信设备有限公司 时隙cdma系统噪声空间相关特性估计方法
US7197082B2 (en) * 2003-03-20 2007-03-27 Lucent Technologies Inc. Linear transformation of symbols to at least partially compensate for correlation between antennas in space time block coded systems
US7130580B2 (en) * 2003-03-20 2006-10-31 Lucent Technologies Inc. Method of compensating for correlation between multiple antennas
US8126095B1 (en) * 2003-03-28 2012-02-28 Ralink Technology Corporation Maximum ratio combining architectures for optimal complementary code keying receiver design
JP3799030B2 (ja) * 2003-05-09 2006-07-19 松下電器産業株式会社 Cdma送信装置およびcdma送信方法
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
US7145940B2 (en) * 2003-12-05 2006-12-05 Qualcomm Incorporated Pilot transmission schemes for a multi-antenna system
US8036327B2 (en) * 2003-12-19 2011-10-11 Telefonaktiebolaget L M Ericsson (Publ) Adaptive channel measurement reporting
GB2427989B (en) * 2004-03-09 2007-08-08 Alexander Vasilievich Garmonov Method and apparatus of data transmission
CN1969518B (zh) * 2004-06-10 2010-06-23 Nxp股份有限公司 经由信道接收信号的装置
US7599978B2 (en) * 2004-07-06 2009-10-06 Telefonaktiebolaget L M Ericsson (Publ) Digital signal decimation by subspace projection
US9137822B2 (en) 2004-07-21 2015-09-15 Qualcomm Incorporated Efficient signaling over access channel
US9148256B2 (en) 2004-07-21 2015-09-29 Qualcomm Incorporated Performance based rank prediction for MIMO design
US11184037B1 (en) 2004-08-02 2021-11-23 Genghiscomm Holdings, LLC Demodulating and decoding carrier interferometry signals
US11381285B1 (en) 2004-08-02 2022-07-05 Genghiscomm Holdings, LLC Transmit pre-coding
US11552737B1 (en) 2004-08-02 2023-01-10 Genghiscomm Holdings, LLC Cooperative MIMO
US8571132B2 (en) 2004-12-22 2013-10-29 Qualcomm Incorporated Constrained hopping in wireless communication systems
CN101288260A (zh) * 2005-01-27 2008-10-15 美商内数位科技公司 使用未由他人分享联合随机衍生秘钥方法及系统
US9246560B2 (en) 2005-03-10 2016-01-26 Qualcomm Incorporated Systems and methods for beamforming and rate control in a multi-input multi-output communication systems
US9154211B2 (en) 2005-03-11 2015-10-06 Qualcomm Incorporated Systems and methods for beamforming feedback in multi antenna communication systems
US8446892B2 (en) 2005-03-16 2013-05-21 Qualcomm Incorporated Channel structures for a quasi-orthogonal multiple-access communication system
US9520972B2 (en) 2005-03-17 2016-12-13 Qualcomm Incorporated Pilot signal transmission for an orthogonal frequency division wireless communication system
US9461859B2 (en) 2005-03-17 2016-10-04 Qualcomm Incorporated Pilot signal transmission for an orthogonal frequency division wireless communication system
US9143305B2 (en) 2005-03-17 2015-09-22 Qualcomm Incorporated Pilot signal transmission for an orthogonal frequency division wireless communication system
US9184870B2 (en) 2005-04-01 2015-11-10 Qualcomm Incorporated Systems and methods for control channel signaling
US9036538B2 (en) 2005-04-19 2015-05-19 Qualcomm Incorporated Frequency hopping design for single carrier FDMA systems
US9408220B2 (en) 2005-04-19 2016-08-02 Qualcomm Incorporated Channel quality reporting for adaptive sectorization
US7466749B2 (en) 2005-05-12 2008-12-16 Qualcomm Incorporated Rate selection with margin sharing
US8565194B2 (en) 2005-10-27 2013-10-22 Qualcomm Incorporated Puncturing signaling channel for a wireless communication system
US8879511B2 (en) 2005-10-27 2014-11-04 Qualcomm Incorporated Assignment acknowledgement for a wireless communication system
US8611284B2 (en) 2005-05-31 2013-12-17 Qualcomm Incorporated Use of supplemental assignments to decrement resources
US8462859B2 (en) 2005-06-01 2013-06-11 Qualcomm Incorporated Sphere decoding apparatus
US8599945B2 (en) * 2005-06-16 2013-12-03 Qualcomm Incorporated Robust rank prediction for a MIMO system
US8064837B2 (en) * 2005-06-16 2011-11-22 Qualcomm Incorporated Method and apparatus for optimum selection of MIMO and interference cancellation
US9179319B2 (en) 2005-06-16 2015-11-03 Qualcomm Incorporated Adaptive sectorization in cellular systems
US8885628B2 (en) 2005-08-08 2014-11-11 Qualcomm Incorporated Code division multiplexing in a single-carrier frequency division multiple access system
US20070041457A1 (en) 2005-08-22 2007-02-22 Tamer Kadous Method and apparatus for providing antenna diversity in a wireless communication system
US9209956B2 (en) 2005-08-22 2015-12-08 Qualcomm Incorporated Segment sensitive scheduling
US8644292B2 (en) 2005-08-24 2014-02-04 Qualcomm Incorporated Varied transmission time intervals for wireless communication system
US9136974B2 (en) 2005-08-30 2015-09-15 Qualcomm Incorporated Precoding and SDMA support
US9088384B2 (en) 2005-10-27 2015-07-21 Qualcomm Incorporated Pilot symbol transmission in wireless communication systems
US8582509B2 (en) 2005-10-27 2013-11-12 Qualcomm Incorporated Scalable frequency band operation in wireless communication systems
US9225488B2 (en) 2005-10-27 2015-12-29 Qualcomm Incorporated Shared signaling channel
US9210651B2 (en) 2005-10-27 2015-12-08 Qualcomm Incorporated Method and apparatus for bootstraping information in a communication system
US8693405B2 (en) 2005-10-27 2014-04-08 Qualcomm Incorporated SDMA resource management
US8045512B2 (en) 2005-10-27 2011-10-25 Qualcomm Incorporated Scalable frequency band operation in wireless communication systems
US9172453B2 (en) 2005-10-27 2015-10-27 Qualcomm Incorporated Method and apparatus for pre-coding frequency division duplexing system
US9225416B2 (en) 2005-10-27 2015-12-29 Qualcomm Incorporated Varied signaling channels for a reverse link in a wireless communication system
US8477684B2 (en) 2005-10-27 2013-07-02 Qualcomm Incorporated Acknowledgement of control messages in a wireless communication system
US9144060B2 (en) 2005-10-27 2015-09-22 Qualcomm Incorporated Resource allocation for shared signaling channels
US8582548B2 (en) 2005-11-18 2013-11-12 Qualcomm Incorporated Frequency division multiple access schemes for wireless communication
JP4498269B2 (ja) * 2005-11-30 2010-07-07 株式会社デンソーアイティーラボラトリ レーダ信号処理装置
US8831607B2 (en) 2006-01-05 2014-09-09 Qualcomm Incorporated Reverse link other sector communication
FR2897994A1 (fr) * 2006-02-28 2007-08-31 France Telecom Procede d'emission d'un signal mettant en oeuvre une allocation de puissance et une formation de voies, dispositif d'emission et produit programme d'ordinateur correspondants.
US8886125B2 (en) 2006-04-14 2014-11-11 Qualcomm Incorporated Distance-based association
US9215581B2 (en) 2006-04-14 2015-12-15 Qualcomm Incorported Distance-based presence management
US7792731B2 (en) * 2006-05-16 2010-09-07 Financial Industry Regulatory Authority, Inc. Capital-adequacy filing and assessment system and method
WO2008100188A1 (en) * 2007-02-15 2008-08-21 Telefonaktiebolaget Lm Ericsson (Publ) Channel measurements on combined pilot signala in multi- carrier systems
US8213402B2 (en) * 2007-02-20 2012-07-03 Harris Corporation Automatic repeat request (ARQ) communication system using physical layer monitoring
US7949063B2 (en) 2007-02-27 2011-05-24 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for impairment correlation estimation in MIMO systems
US8837724B2 (en) 2007-03-27 2014-09-16 Qualcomm Incorporated Synchronization test for device authentication
US9524502B2 (en) 2007-06-20 2016-12-20 Qualcomm Incorporated Management of dynamic electronic coupons
US9141961B2 (en) 2007-06-20 2015-09-22 Qualcomm Incorporated Management of dynamic mobile coupons
US9483769B2 (en) 2007-06-20 2016-11-01 Qualcomm Incorporated Dynamic electronic coupon for a mobile environment
KR101441500B1 (ko) * 2008-06-20 2014-11-04 삼성전자주식회사 다중 안테나 및 사운딩 레퍼런스 신호 호핑을 사용하는상향링크 무선 통신 시스템에서의 사운딩 레퍼런스 신호전송 장치 및 방법
US9252862B2 (en) * 2008-09-17 2016-02-02 Qualcomm Incorporated MIMO preamble for initial access with an unknown number of transmit antennas
US20100280960A1 (en) * 2009-05-04 2010-11-04 Agisilaos-Georgios Ziotopoulos Apparatus and methods for negotiating discount offers
US8599969B2 (en) * 2009-08-13 2013-12-03 Qualcomm Incorporated Communications channel estimation
US10321426B2 (en) 2009-10-20 2019-06-11 Samsung Electronics Co., Ltd. Apparatus and method for detecting synchronization and signals using block data processing
US20110250919A1 (en) 2010-04-13 2011-10-13 Qualcomm Incorporated Cqi estimation in a wireless communication network
US9515773B2 (en) 2010-04-13 2016-12-06 Qualcomm Incorporated Channel state information reporting in a wireless communication network
US9350475B2 (en) 2010-07-26 2016-05-24 Qualcomm Incorporated Physical layer signaling to user equipment in a wireless communication system
US9307431B2 (en) 2010-04-13 2016-04-05 Qualcomm Incorporated Reporting of channel properties in heterogeneous networks
WO2011160100A1 (en) 2010-06-18 2011-12-22 Qualcomm Incorporated Channel quality reporting for different types of subframes
US9136953B2 (en) * 2010-08-03 2015-09-15 Qualcomm Incorporated Interference estimation for wireless communication
US10542372B2 (en) 2011-03-15 2020-01-21 Qualcomm Incorporated User identification within a physical merchant location through the use of a wireless network
US8855000B2 (en) 2011-04-28 2014-10-07 Qualcomm Incorporated Interference estimation using data traffic power and reference signal power
US8594221B2 (en) 2011-05-24 2013-11-26 Industrial Technology Research Institute Model-based channel estimator for correlated fading channels and channel estimation method thereof
US8929390B2 (en) * 2012-09-24 2015-01-06 Alcatel Lucent Methods and apparatuses for channel estimation in wireless networks
US9917628B2 (en) * 2015-01-16 2018-03-13 RF DSP Inc. Beamforming in a MU-MIMO wireless communication system with relays
US10142778B2 (en) * 2016-01-07 2018-11-27 Qualcomm Technologies International, Ltd. Direction finding for legacy bluetooth devices
US10535923B2 (en) * 2016-03-22 2020-01-14 Elwha Llc Systems and methods for reducing intermodulation for electronically controlled adaptive antenna arrays
KR102202364B1 (ko) * 2017-01-26 2021-01-13 후아웨이 테크놀러지 컴퍼니 리미티드 채널 상태 정보 피드백 방법, 단말 디바이스, 및 네트워크 디바이스
US10243773B1 (en) 2017-06-30 2019-03-26 Genghiscomm Holdings, LLC Efficient peak-to-average-power reduction for OFDM and MIMO-OFDM
US10637705B1 (en) 2017-05-25 2020-04-28 Genghiscomm Holdings, LLC Peak-to-average-power reduction for OFDM multiple access
US10229092B2 (en) 2017-08-14 2019-03-12 City University Of Hong Kong Systems and methods for robust low-rank matrix approximation
WO2019157230A1 (en) * 2018-02-08 2019-08-15 Cohere Technologies, Inc. Aspects of channel estimation for orthogonal time frequency space modulation for wireless communications
CN113454964A (zh) 2019-01-25 2021-09-28 珍吉斯科姆控股有限责任公司 正交多址和非正交多址
US11917604B2 (en) 2019-01-25 2024-02-27 Tybalt, Llc Orthogonal multiple access and non-orthogonal multiple access
US11343823B2 (en) 2020-08-16 2022-05-24 Tybalt, Llc Orthogonal multiple access and non-orthogonal multiple access
WO2020242898A1 (en) 2019-05-26 2020-12-03 Genghiscomm Holdings, LLC Non-orthogonal multiple access
CN111654456B (zh) * 2020-06-09 2021-10-19 江南大学 基于降维分解的毫米波大规模mimo角域信道估计方法及装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2302289C (en) 1996-08-29 2005-11-08 Gregory G. Raleigh Spatio-temporal processing for communication
US6232918B1 (en) * 1997-01-08 2001-05-15 Us Wireless Corporation Antenna array calibration in wireless communication systems
ES2224192T3 (es) 1997-03-20 2005-03-01 Siemens Aktiengesellschaft Procedimiento y equipo receptor para detectar datos.
CN1201167C (zh) 1997-03-25 2005-05-11 西门子公司 方向评估方法
ES2200348T3 (es) 1997-03-25 2004-03-01 Siemens Aktiengesellschaft Procedimiento para la estimacion de canal a partir de señales de recepcion transmitidas a traves de un canal de radio.
BR9812816A (pt) * 1997-09-15 2000-08-08 Adaptive Telecom Inc Processos para comunicação sem fio, e para eficientemente determinar na estação base um canal espacial da unidade móvel em um sistema de comunicação sem fio, e, estação base de cdma

Also Published As

Publication number Publication date
IL155532A0 (en) 2003-11-23
EP1329069A2 (en) 2003-07-23
CA2426650A1 (en) 2002-08-01
CN1471779A (zh) 2004-01-28
BR0114769A (pt) 2004-06-15
TW533714B (en) 2003-05-21
JP2004521539A (ja) 2004-07-15
US6907270B1 (en) 2005-06-14
NO20031780L (no) 2003-06-20
WO2002060138A3 (en) 2003-04-10
WO2002060138A2 (en) 2002-08-01
RU2292655C2 (ru) 2007-01-27
KR20030044025A (ko) 2003-06-02
KR100810180B1 (ko) 2008-03-06
NO20031780D0 (no) 2003-04-22
JP4508529B2 (ja) 2010-07-21

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