IN2012DN06619A - - Google Patents

Info

Publication number
IN2012DN06619A
IN2012DN06619A IN6619DEN2012A IN2012DN06619A IN 2012DN06619 A IN2012DN06619 A IN 2012DN06619A IN 6619DEN2012 A IN6619DEN2012 A IN 6619DEN2012A IN 2012DN06619 A IN2012DN06619 A IN 2012DN06619A
Authority
IN
India
Prior art keywords
groups
channel estimation
prbs
bandwidth
resource blocks
Prior art date
Application number
Inventor
Yueyi You
Haiyong Xiao
Original Assignee
Zte 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
Application filed by Zte Corp filed Critical Zte Corp
Publication of IN2012DN06619A publication Critical patent/IN2012DN06619A/en

Links

Classifications

    • 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
    • H04L25/0204—Channel estimation of multiple channels
    • 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
    • H04L25/022—Channel estimation of frequency response
    • 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
    • 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
    • H04L25/023—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols
    • H04L25/0232—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols by interpolation between sounding signals
    • H04L25/0234—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols by interpolation between sounding signals by non-linear interpolation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2627—Modulators
    • H04L27/2628—Inverse Fourier transform modulators, e.g. inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators
    • H04L27/2633—Inverse Fourier transform modulators, e.g. inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators using partial FFTs
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Nonlinear Science (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)

Abstract

A method and device for channel estimation in an Orthogonal Frequency Division Multiplexing (OFDM) system are disclosed. The method includes steps as follows: A grouping Physical Resource Blocks (PRBs) in bandwidth of the OFDM system; B extracting at least one from the groups to perform channel estimation and obtaining channel coefficients wherein the number of the extracted groups is less than the number of the total groups; C accomplishing multi input multi output (MIMO) demodulation with the obtained channel coefficients. D judging whether the channel estimation of groups is completed if yes ending otherwise returning to step B. By dividing PRBs in the bandwidth of the OFDM system into some groups and then performing channel estimation in turn separately with each group of resource blocks with the device the storage sharing is realized and thereby the storage is saved.
IN6619DEN2012 2010-03-24 2010-11-02 IN2012DN06619A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201010138069.2A CN102202029B (en) 2010-03-24 2010-03-24 Channel estimation method and device for orthogonal frequency division multiplexing system
PCT/CN2010/078354 WO2011116606A1 (en) 2010-03-24 2010-11-02 Method and device for channel estimation in orthogonal frequency division multiplexing system

Publications (1)

Publication Number Publication Date
IN2012DN06619A true IN2012DN06619A (en) 2015-10-23

Family

ID=44662429

Family Applications (1)

Application Number Title Priority Date Filing Date
IN6619DEN2012 IN2012DN06619A (en) 2010-03-24 2010-11-02

Country Status (6)

Country Link
US (1) US8798178B2 (en)
EP (1) EP2515570B1 (en)
JP (1) JP5548785B2 (en)
CN (1) CN102202029B (en)
IN (1) IN2012DN06619A (en)
WO (1) WO2011116606A1 (en)

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US9774481B2 (en) * 2012-04-05 2017-09-26 Qualcomm, Incorporated Systems and methods for transmitting pilot tones
US9184889B2 (en) * 2012-08-08 2015-11-10 Blackberry Limited Method and system having reference signal design for new carrier types
US9402256B2 (en) 2012-08-08 2016-07-26 Blackberry Limited Method and system having reference signal design for new carrier types
CN103841057B (en) * 2012-11-21 2017-07-14 电信科学技术研究院 A kind of channel estimation methods and equipment
KR102094732B1 (en) 2013-03-11 2020-03-30 삼성전자주식회사 Device of adaptively estimating channel in ofdm system and method thereof
GB2533534A (en) * 2013-09-24 2016-06-22 Zte Wistron Telecom Ab Method and apparatus for modified reference signal transmission for cell discovery
CN109995689B (en) * 2017-12-29 2021-08-06 普天信息技术有限公司 Method, apparatus, electronic device and storage medium for estimating PUCCH frequency offset
WO2019182486A1 (en) * 2018-03-20 2019-09-26 Telefonaktiebolaget Lm Ericsson (Publ) A wireless device, a network node and methods therein for enabling and determining reference signal configurations in a wireless communications network
CN115801516B (en) * 2022-11-04 2025-05-30 成都新基讯通信技术有限公司 A MIMO frequency offset estimation method and system

Family Cites Families (18)

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EP1617568B1 (en) 2003-04-21 2013-09-04 Mitsubishi Denki Kabushiki Kaisha Radio communication apparatus, transmitter apparatus, receiver apparatus and radio communication system
AU2004247167B2 (en) * 2003-06-18 2007-11-08 Samsung Electronics Co., Ltd. Apparatus and method for transmitting and receiving a pilot pattern for identification of a base station in an OFDM communication system
KR100564601B1 (en) * 2003-12-29 2006-03-28 삼성전자주식회사 Frequency Domain Echo Detection Method and Equalizer Using the Same
KR100594084B1 (en) * 2004-04-30 2006-06-30 삼성전자주식회사 Channel Estimation Method and Channel Estimator for Orthogonal Frequency Division Multiple Receiver
US7457231B2 (en) * 2004-05-04 2008-11-25 Qualcomm Incorporated Staggered pilot transmission for channel estimation and time tracking
EP3709554B1 (en) * 2005-08-23 2021-09-22 Apple Inc. Pilot design for ofdm systems with four transmit antennas
US8077667B2 (en) * 2006-04-28 2011-12-13 Panasonic Corporation Radio communication base station apparatus and radio communication method used for multi-carrier communication
CN100536448C (en) 2006-05-26 2009-09-02 上海大学 MIMO-OFDM channel estimating method for united orthogonal guide frequency design
CA2673930C (en) * 2006-12-28 2013-07-23 Nokia Corporation Resource restricted allocation in long term evolution
US8320407B2 (en) * 2007-01-05 2012-11-27 Qualcomm Incorporated Mapping of subpackets to resources in a communication system
CN101662820B (en) * 2007-01-09 2014-12-24 华为技术有限公司 Base station device, mobile station device, control information transmitting method, control information receiving method and program
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CN101534281B (en) * 2009-04-20 2011-06-22 北京交通大学 A Diversity Channel Estimation Method Based on Comb Pilot in OFDM System
CN101582712B (en) * 2009-06-19 2014-11-05 中兴通讯股份有限公司 Method for realizing precoding and method for generating precoding matrices

Also Published As

Publication number Publication date
EP2515570A1 (en) 2012-10-24
EP2515570B1 (en) 2016-12-21
JP5548785B2 (en) 2014-07-16
JP2013520853A (en) 2013-06-06
WO2011116606A1 (en) 2011-09-29
US20120300884A1 (en) 2012-11-29
EP2515570A4 (en) 2015-09-09
CN102202029A (en) 2011-09-28
US8798178B2 (en) 2014-08-05
CN102202029B (en) 2015-01-28

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