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FI20021554A - Menetelmä kanavan estimoimiseksi ja radiojärjestelmä - Google Patents

Menetelmä kanavan estimoimiseksi ja radiojärjestelmä

Info

Publication number
FI20021554A
FI20021554A FI20021554A FI20021554A FI20021554A FI 20021554 A FI20021554 A FI 20021554A FI 20021554 A FI20021554 A FI 20021554A FI 20021554 A FI20021554 A FI 20021554A FI 20021554 A FI20021554 A FI 20021554A
Authority
FI
Finland
Prior art keywords
channel estimation
radio system
radio
estimation
channel
Prior art date
Application number
FI20021554A
Other languages
English (en)
Swedish (sv)
Other versions
FI20021554A0 (fi
Inventor
Juha Ylitalo
Esa Tiirola
Matti Kiiski
Original Assignee
Nokia Corp
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 claimed from FI20012587A external-priority patent/FI20012587L/fi
Application filed by Nokia Corp filed Critical Nokia Corp
Priority to FI20021554A priority Critical patent/FI20021554A/fi
Publication of FI20021554A0 publication Critical patent/FI20021554A0/fi
Priority to EP02102828A priority patent/EP1324510A1/en
Priority to US10/329,760 priority patent/US7203246B2/en
Priority to CN02160861A priority patent/CN1430437A/zh
Publication of FI20021554A publication Critical patent/FI20021554A/fi

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
    • H04B7/0408—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more beams, i.e. beam diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/005—Control of transmission; Equalising
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
    • 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
    • H04B7/0615—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 of weighted versions of same signal
    • H04B7/0617—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 of weighted versions of same signal for beam forming
    • 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
    • H04B7/0615—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 of weighted versions of same signal
    • H04B7/0619—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 of weighted versions of same signal using feedback from receiving side

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)
FI20021554A 2001-12-28 2002-08-30 Menetelmä kanavan estimoimiseksi ja radiojärjestelmä FI20021554A (fi)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FI20021554A FI20021554A (fi) 2001-12-28 2002-08-30 Menetelmä kanavan estimoimiseksi ja radiojärjestelmä
EP02102828A EP1324510A1 (en) 2001-12-28 2002-12-19 Downlink channel estimation method, and radio system
US10/329,760 US7203246B2 (en) 2001-12-28 2002-12-27 Method of estimating a channel, and a radio system
CN02160861A CN1430437A (zh) 2001-12-28 2002-12-27 估计信道的方法及一种无线电系统

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20012587A FI20012587L (fi) 2001-12-28 2001-12-28 Menetelmä laskevan siirtotien kanavan estimoimiseksi ja tilaajapäätelaite
FI20021554A FI20021554A (fi) 2001-12-28 2002-08-30 Menetelmä kanavan estimoimiseksi ja radiojärjestelmä

Publications (2)

Publication Number Publication Date
FI20021554A0 FI20021554A0 (fi) 2002-08-30
FI20021554A true FI20021554A (fi) 2003-06-29

Family

ID=26161245

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20021554A FI20021554A (fi) 2001-12-28 2002-08-30 Menetelmä kanavan estimoimiseksi ja radiojärjestelmä

Country Status (4)

Country Link
US (1) US7203246B2 (fi)
EP (1) EP1324510A1 (fi)
CN (1) CN1430437A (fi)
FI (1) FI20021554A (fi)

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US7876810B2 (en) 2005-04-07 2011-01-25 Rambus Inc. Soft weighted interference cancellation for CDMA systems
US7808937B2 (en) 2005-04-07 2010-10-05 Rambus, Inc. Variable interference cancellation technology for CDMA systems
US8761321B2 (en) 2005-04-07 2014-06-24 Iii Holdings 1, Llc Optimal feedback weighting for soft-decision cancellers
US8179946B2 (en) 2003-09-23 2012-05-15 Rambus Inc. Systems and methods for control of advanced receivers
US20040132494A1 (en) * 2003-01-03 2004-07-08 Olav Tirkkonen Communication method
US20040157626A1 (en) * 2003-02-10 2004-08-12 Vincent Park Paging methods and apparatus
US8196000B2 (en) 2003-04-02 2012-06-05 Qualcomm Incorporated Methods and apparatus for interleaving in a block-coherent communication system
US7434145B2 (en) * 2003-04-02 2008-10-07 Qualcomm Incorporated Extracting soft information in a block-coherent communication system
DE10340397A1 (de) * 2003-09-02 2005-04-07 Siemens Ag §erfahren zum Übertragen von Signalen in einem Funkkommunikationssystem sowie entsprechende Sendestation und Empfangsstation
US7570615B2 (en) * 2003-10-20 2009-08-04 Telefonaktiebolaget Lm Ericsson (Publ) Resource-sharing cells
US7054664B2 (en) * 2003-10-30 2006-05-30 Lucent Technologies Inc. Method and apparatus for providing user specific downlink beamforming in a fixed beam network
US7664533B2 (en) * 2003-11-10 2010-02-16 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for a multi-beam antenna system
US7461313B2 (en) * 2003-12-30 2008-12-02 Qualcomm Incorporated Test pattern generation
ES2885101T3 (es) 2004-01-29 2021-12-13 Neo Wireless Llc Procedimientos y aparatos para superponer señales de espectro ensanchado de secuencia directa y de múltiples portadoras en un sistema de comunicación inalámbrica de banda ancha
EP1628415A1 (en) * 2004-08-18 2006-02-22 Alcatel Mobile radio communication system for downlink transmission and method for transmitting a signal across at least two downlink paths of a multiple antenna mobile radio communication system
CN101023603B (zh) * 2004-09-17 2011-02-02 日本电气株式会社 通信控制方法、移动通信系统、基站和无线电网络控制器
US7826516B2 (en) 2005-11-15 2010-11-02 Rambus Inc. Iterative interference canceller for wireless multiple-access systems with multiple receive antennas
WO2007045127A1 (fr) * 2005-10-21 2007-04-26 Zte Corporation Procede de transmision de signal ascendant destine a l’equipement de l’utilisateur et procede de synchronisation correspondante
WO2008046016A2 (en) * 2006-10-11 2008-04-17 Maxlinear, Inc. Method and apparatus for channel estimation in ofdm receivers
US8027395B2 (en) * 2006-11-03 2011-09-27 Maxlinear, Inc. Edge MMSE filters
US8335202B2 (en) 2006-11-20 2012-12-18 Qualcomm Incorporated Sending pilots on secondary channels for improved acquisition and handoff in cellular communication
WO2008101252A1 (en) * 2007-02-16 2008-08-21 Maxlinear, Inc. Long echo detection and channel estimation for ofdm systems
FR2913555A1 (fr) * 2007-03-05 2008-09-12 France Telecom Traitement de symboles dans une communication bidirectionnelle par retournement temporel.
WO2009059816A1 (en) * 2007-11-06 2009-05-14 Telefonaktiebolaget L M Ericsson (Publ) Methods and arrangements in a mobile telecommunications system
US9544776B2 (en) * 2008-03-25 2017-01-10 Qualcomm Incorporated Transmission and reception of dedicated reference signals
CN101527583B (zh) * 2009-04-17 2012-11-14 中山大学 Wcdma下行信道参数估计方法
US8937900B2 (en) 2010-07-20 2015-01-20 Qualcomm Incorporated Enhancing pilot channel transmission in TD-SCDMA multicarrier systems using secondary carrier frequencies
US9295006B2 (en) 2011-02-09 2016-03-22 Qualcomm Incorporated Real-time calibration of an air to ground communication system
EP2681866B1 (en) * 2011-03-03 2016-05-11 Telefonaktiebolaget LM Ericsson (publ) Pilot signal assignment
US9319172B2 (en) 2011-10-14 2016-04-19 Qualcomm Incorporated Interference mitigation techniques for air to ground systems
US9118413B2 (en) * 2012-12-20 2015-08-25 Nokia Technologies Oy Apparatus and a method
JP2014131201A (ja) * 2012-12-28 2014-07-10 Ntt Docomo Inc 無線基地局、ユーザ端末、無線通信方法、及び無線通信システム
WO2014112934A1 (en) * 2013-01-17 2014-07-24 Telefonaktiebolaget L M Ericsson (Publ) Resource scheduling for downlink transmissions
US9369252B2 (en) * 2013-01-25 2016-06-14 Qualcomm Incorporated Common reference signal phase discontinuity and sequence initialization
JP6166204B2 (ja) * 2014-03-26 2017-07-19 株式会社Ｓｏｋｅｎ 通信装置
CN107645767A (zh) * 2016-07-20 2018-01-30 中兴通讯股份有限公司 时间提前量的测量方法及装置
US10432280B1 (en) * 2018-05-14 2019-10-01 Sprint Communications Company L.P. Antenna array correlation for uplink coverage improvement

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6108565A (en) * 1997-09-15 2000-08-22 Adaptive Telecom, Inc. Practical space-time radio method for CDMA communication capacity enhancement
US6411649B1 (en) * 1998-10-20 2002-06-25 Ericsson Inc. Adaptive channel tracking using pilot sequences
EP1065800A1 (en) * 1999-07-02 2001-01-03 Lucent Technologies Inc. Code division multiple access system having improved pilot channels
JP3732364B2 (ja) * 1999-08-27 2006-01-05 松下電器産業株式会社 通信端末装置及びチャネル推定方法
JP2001326586A (ja) * 2000-05-17 2001-11-22 Nec Corp Ｃｄｍａ通信システム及びそれに用いるチャネル推定方法
US6847832B2 (en) * 2001-03-09 2005-01-25 Kathrein-Werke Kg System and method for providing phase matching with optimized beam widths

Also Published As

Publication number Publication date
US20030198201A1 (en) 2003-10-23
EP1324510A1 (en) 2003-07-02
US7203246B2 (en) 2007-04-10
CN1430437A (zh) 2003-07-16
FI20021554A0 (fi) 2002-08-30

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