ATE545250T1 - Verfahren zur unterscheidung einer echten echospitze von einer alias-echospitze - Google Patents

Verfahren zur unterscheidung einer echten echospitze von einer alias-echospitze

Info

Publication number
ATE545250T1
ATE545250T1 AT08845511T AT08845511T ATE545250T1 AT E545250 T1 ATE545250 T1 AT E545250T1 AT 08845511 T AT08845511 T AT 08845511T AT 08845511 T AT08845511 T AT 08845511T AT E545250 T1 ATE545250 T1 AT E545250T1
Authority
AT
Austria
Prior art keywords
peak
correlation
samples
time delay
echos
Prior art date
Application number
AT08845511T
Other languages
English (en)
Inventor
Frederic Pirot
Original Assignee
Nxp Bv
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 Nxp Bv filed Critical Nxp Bv
Application granted granted Critical
Publication of ATE545250T1 publication Critical patent/ATE545250T1/de

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
    • H04L25/0212—Channel estimation of impulse 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
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
AT08845511T 2007-11-01 2008-10-28 Verfahren zur unterscheidung einer echten echospitze von einer alias-echospitze ATE545250T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP07291314 2007-11-01
PCT/IB2008/054441 WO2009057040A1 (en) 2007-11-01 2008-10-28 A method to discriminate a real echo peak from an aliased echo peak

Publications (1)

Publication Number Publication Date
ATE545250T1 true ATE545250T1 (de) 2012-02-15

Family

ID=40427528

Family Applications (1)

Application Number Title Priority Date Filing Date
AT08845511T ATE545250T1 (de) 2007-11-01 2008-10-28 Verfahren zur unterscheidung einer echten echospitze von einer alias-echospitze

Country Status (5)

Country Link
US (1) US8194807B2 (de)
EP (1) EP2215790B1 (de)
CN (1) CN101843061B (de)
AT (1) ATE545250T1 (de)
WO (1) WO2009057040A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI623210B (zh) * 2016-11-15 2018-05-01 晨星半導體股份有限公司 用來估計一影音訊號之通道狀態的估計方法及相關的估計電路與接收器
GB2560041B (en) * 2017-02-28 2020-03-18 Imagination Tech Ltd OFDM signal parameter estimation
CN113376645B (zh) * 2021-08-16 2021-11-30 深圳煜炜光学科技有限公司 一种提高激光测距精度的方法与装置
US11516057B1 (en) * 2021-09-30 2022-11-29 Silicon Laboratories Inc. Generating a preamble portion of an orthogonal frequency division multiplexing transmission having frequency disruption
US20230246721A1 (en) * 2022-02-01 2023-08-03 Nami Ai Pte Ltd. Wifi sensing device

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6335954B1 (en) * 1996-12-27 2002-01-01 Ericsson Inc. Method and apparatus for joint synchronization of multiple receive channels
US6654429B1 (en) 1998-12-31 2003-11-25 At&T Corp. Pilot-aided channel estimation for OFDM in wireless systems
US7151797B2 (en) * 2002-05-14 2006-12-19 Limberg Allen Leroy Adaptive K-factor-improvement filter for receiver of radio signals subject to multipath distortion
JP4242606B2 (ja) * 2002-06-20 2009-03-25 株式会社エヌ・ティ・ティ・ドコモ 通信制御システム、通信制御方法、移動局及び基地局
US7421029B2 (en) 2002-12-20 2008-09-02 Unique Broadband Systems, Inc. Impulse response shortening and symbol synchronization in OFDM communication systems
WO2004105335A1 (en) 2003-05-22 2004-12-02 Ntt Docomo, Inc. Apparatus and method for processing an impulse response of a channel
EP1639775B1 (de) 2003-06-30 2007-10-10 Nokia Corporation Schnellerer fein-timing-betrieb in einem mehrträgersystem
US8553822B2 (en) 2004-01-28 2013-10-08 Qualcomm Incorporated Time filtering for excess delay mitigation in OFDM systems
GB2412551A (en) * 2004-03-26 2005-09-28 Sony Uk Ltd Receiver
US7457231B2 (en) 2004-05-04 2008-11-25 Qualcomm Incorporated Staggered pilot transmission for channel estimation and time tracking
US7324591B2 (en) 2004-08-17 2008-01-29 Zenith Electronics Corporation Adaptive equalizer
US7609773B2 (en) 2005-04-18 2009-10-27 Qualcomm Incorporated Method of determining the location of the FFT window and the delay spread for the platinum broadcast channel estimator
JP2009502078A (ja) * 2005-07-20 2009-01-22 エヌエックスピー ビー ヴィ 精密ｏｆｄｍシンボル同期化のための方法及び同期装置並びにｏｆｄｍシンボルの受信のための方法／受信器
US9391813B2 (en) * 2007-02-16 2016-07-12 Maxlinear, Inc. Long echo detection and channel estimation for OFDM systems
US7684313B2 (en) * 2007-03-30 2010-03-23 Zoran Corporation System and method for FFT window timing synchronization for an orthogonal frequency-division multiplexed data stream

Also Published As

Publication number Publication date
EP2215790B1 (de) 2012-02-08
WO2009057040A1 (en) 2009-05-07
US8194807B2 (en) 2012-06-05
US20100303175A1 (en) 2010-12-02
CN101843061B (zh) 2012-12-19
EP2215790A1 (de) 2010-08-11
CN101843061A (zh) 2010-09-22

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