AU2001277239A1 - Adaptive linear equalisation for walsh-modulated - Google Patents

Adaptive linear equalisation for walsh-modulated

Info

Publication number
AU2001277239A1
AU2001277239A1 AU2001277239A AU7723901A AU2001277239A1 AU 2001277239 A1 AU2001277239 A1 AU 2001277239A1 AU 2001277239 A AU2001277239 A AU 2001277239A AU 7723901 A AU7723901 A AU 7723901A AU 2001277239 A1 AU2001277239 A1 AU 2001277239A1
Authority
AU
Australia
Prior art keywords
walsh
modulated
adaptive linear
linear equalisation
equalisation
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
AU2001277239A
Other languages
English (en)
Inventor
Ahmad Jalali
Fuyun Ling
John E. Smee
Mark Wallace
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qualcomm Inc
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 AU2001277239A1 publication Critical patent/AU2001277239A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69Spread spectrum techniques
    • H04B1/707Spread spectrum techniques using direct sequence modulation
    • H04B1/7097Interference-related aspects
    • 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
    • H04L25/03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006Arrangements for removing intersymbol interference
    • H04L25/03012Arrangements for removing intersymbol interference operating in the time domain
    • H04L25/03019Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
    • H04L25/03038Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a non-recursive structure
    • 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
    • H04L25/03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006Arrangements for removing intersymbol interference
    • H04L2025/0335Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03375Passband transmission
    • 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
    • H04L25/03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006Arrangements for removing intersymbol interference
    • H04L2025/03433Arrangements for removing intersymbol interference characterised by equaliser structure
    • H04L2025/03439Fixed structures
    • H04L2025/03445Time domain
    • H04L2025/03471Tapped delay lines
    • H04L2025/03477Tapped delay lines not time-recursive

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
AU2001277239A 2000-08-10 2001-08-01 Adaptive linear equalisation for walsh-modulated Abandoned AU2001277239A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/636,008 US6522683B1 (en) 2000-08-10 2000-08-10 Method and apparatus for adaptive linear equalization for walsh covered modulation
US09/636,008 2000-08-10
PCT/US2001/024138 WO2002015502A2 (fr) 2000-08-10 2001-08-01 Procede et dispositif pour egalisation lineaire adaptative applicable a la modulation sous fonction de walsh

Publications (1)

Publication Number Publication Date
AU2001277239A1 true AU2001277239A1 (en) 2002-02-25

Family

ID=24550024

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001277239A Abandoned AU2001277239A1 (en) 2000-08-10 2001-08-01 Adaptive linear equalisation for walsh-modulated

Country Status (10)

Country Link
US (2) US6522683B1 (fr)
EP (1) EP1308008A2 (fr)
JP (1) JP2004507166A (fr)
KR (1) KR20030027019A (fr)
CN (1) CN1214584C (fr)
AU (1) AU2001277239A1 (fr)
BR (1) BR0113095A (fr)
HK (1) HK1060232A1 (fr)
TW (1) TW561746B (fr)
WO (1) WO2002015502A2 (fr)

Families Citing this family (69)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6925127B1 (en) * 1997-07-22 2005-08-02 Ericsson Inc. Method and apparatus for subtracting multiple rays of multiple interfering received signals
US6711121B1 (en) * 1998-10-09 2004-03-23 At&T Corp. Orthogonal code division multiplexing for twisted pair channels
US6845104B2 (en) * 2000-06-14 2005-01-18 Ipr Licensing, Inc. Receiver for time division multiplex system without explicit time slot assignment
US7082174B1 (en) * 2000-07-24 2006-07-25 Qualcomm, Incorporated Method and apparatus for processing a modulated signal using an equalizer and a rake receiver
US6522683B1 (en) * 2000-08-10 2003-02-18 Qualcomm, Incorporated Method and apparatus for adaptive linear equalization for walsh covered modulation
US6744806B1 (en) * 2000-09-13 2004-06-01 Ut-Battelle, L.L.C. Fast-synchronizing high-fidelity spread-spectrum receiver
US6847677B1 (en) * 2000-09-29 2005-01-25 Qualcomm, Incorporated Method and apparatus for efficient Walsh covering and summing of signals in a communication system
WO2002031995A2 (fr) * 2000-10-06 2002-04-18 Ericsson Inc Methode permettant de soustraire plusieurs rayons de signal reçus perturbateurs et dispositif correspondant
US7545849B1 (en) * 2003-03-28 2009-06-09 Google Inc. Signal spectrum spreading and combining system and method
US8385470B2 (en) * 2000-12-05 2013-02-26 Google Inc. Coding a signal with a shuffled-Hadamard function
US8374218B2 (en) * 2000-12-05 2013-02-12 Google Inc. Combining signals with a shuffled-hadamard function
US6731668B2 (en) * 2001-01-05 2004-05-04 Qualcomm Incorporated Method and system for increased bandwidth efficiency in multiple input—multiple output channels
US7751469B2 (en) * 2001-02-20 2010-07-06 Massachusetts Institute Of Technology Correlation shaping matched filter receiver
US7636403B2 (en) * 2001-02-20 2009-12-22 Massachusetts Institute Of Technology Correlation shaping multi-signature receiver
US20020191568A1 (en) * 2001-03-29 2002-12-19 Koninklijke Philips Electronics N.V. Adaptive chip equalizers for synchronous DS-CDMA systems with pilot sequences
US7158558B2 (en) * 2001-04-26 2007-01-02 Interuniversitair Microelektronica Centrum (Imec) Wideband multiple access telecommunication method and apparatus
US7209524B2 (en) * 2001-04-27 2007-04-24 The Directv Group, Inc. Layered modulation for digital signals
US7245671B1 (en) * 2001-04-27 2007-07-17 The Directv Group, Inc. Preprocessing signal layers in a layered modulation digital signal system to use legacy receivers
US7173981B1 (en) * 2001-04-27 2007-02-06 The Directv Group, Inc. Dual layer signal processing in a layered modulation digital signal system
US7184489B2 (en) * 2001-04-27 2007-02-27 The Directv Group, Inc. Optimization technique for layered modulation
US7822154B2 (en) * 2001-04-27 2010-10-26 The Directv Group, Inc. Signal, interference and noise power measurement
US7778365B2 (en) * 2001-04-27 2010-08-17 The Directv Group, Inc. Satellite TWTA on-line non-linearity measurement
US7583728B2 (en) * 2002-10-25 2009-09-01 The Directv Group, Inc. Equalizers for layered modulated and other signals
US7639759B2 (en) * 2001-04-27 2009-12-29 The Directv Group, Inc. Carrier to noise ratio estimations from a received signal
US7471735B2 (en) * 2001-04-27 2008-12-30 The Directv Group, Inc. Maximizing power and spectral efficiencies for layered and conventional modulations
US8005035B2 (en) * 2001-04-27 2011-08-23 The Directv Group, Inc. Online output multiplexer filter measurement
US7483505B2 (en) * 2001-04-27 2009-01-27 The Directv Group, Inc. Unblind equalizer architecture for digital communication systems
US7423987B2 (en) * 2001-04-27 2008-09-09 The Directv Group, Inc. Feeder link configurations to support layered modulation for digital signals
US7502430B2 (en) * 2001-04-27 2009-03-10 The Directv Group, Inc. Coherent averaging for measuring traveling wave tube amplifier nonlinearity
US6842494B2 (en) * 2001-08-31 2005-01-11 Nokia Corporation Apparatus, and associated method, for forming a systematic, recursive, space-time code
FR2829584B1 (fr) * 2001-09-07 2003-12-05 Thales Sa Procede et dispositif permettant de generer plusieurs canaux dans un systeme de type iff
US7177265B1 (en) * 2002-01-15 2007-02-13 Digi International Inc. Iterative method, and apparatus for acquiring time and frequency synchronization in a DSSS receiver
SE0201103D0 (sv) * 2002-04-11 2002-04-11 Ericsson Telefon Ab L M Diagonally Layered Multi-Antenna Transmission for Frequency Selective Channels
US7873021B2 (en) * 2002-04-25 2011-01-18 Imec CDMA transceiver techniques for wireless communications
CA2489569C (fr) * 2002-07-01 2012-05-22 The Directv Group, Inc. Amelioration de la performance d'un signal 8psk hierarchise
TWI279113B (en) * 2002-07-03 2007-04-11 Hughes Electronics Corp Method and apparatus for layered modulation
US6968001B2 (en) * 2002-08-21 2005-11-22 Qualcomm Incorporated Communication receiver with virtual parallel equalizers
US8761321B2 (en) * 2005-04-07 2014-06-24 Iii Holdings 1, Llc Optimal feedback weighting for soft-decision cancellers
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
US8005128B1 (en) 2003-09-23 2011-08-23 Rambus Inc. Methods for estimation and interference cancellation for signal processing
US7715508B2 (en) 2005-11-15 2010-05-11 Tensorcomm, Incorporated Iterative interference cancellation using mixed feedback weights and stabilizing step sizes
US7529312B2 (en) * 2002-10-25 2009-05-05 The Directv Group, Inc. Layered modulation for terrestrial ATSC applications
US7230480B2 (en) * 2002-10-25 2007-06-12 The Directv Group, Inc. Estimating the operating point on a non-linear traveling wave tube amplifier
JP3751600B2 (ja) * 2003-03-27 2006-03-01 株式会社東芝 受信装置及び受信方法
US7548598B2 (en) * 2003-04-07 2009-06-16 Harris Corporation Method and apparatus for iteratively improving the performance of coded and interleaved communication systems
US7372919B1 (en) 2003-04-10 2008-05-13 Marvell International Ltd. Space-time block decoder for a wireless communications system
US7236510B2 (en) * 2003-10-01 2007-06-26 S5 Wireless, Inc. Equalizer with decision feedback frequency tracking and bit decoding for spread spectrum communications
US7502429B2 (en) * 2003-10-10 2009-03-10 The Directv Group, Inc. Equalization for traveling wave tube amplifier nonlinearity measurements
US7756191B2 (en) * 2003-12-22 2010-07-13 Nokia Corporation Deconvolution searcher for wireless communication system
US7991088B2 (en) 2005-11-15 2011-08-02 Tommy Guess Iterative interference cancellation using mixed feedback weights and stabilizing step sizes
US7711075B2 (en) 2005-11-15 2010-05-04 Tensorcomm Incorporated Iterative interference cancellation using mixed feedback weights and stabilizing step sizes
US7826516B2 (en) * 2005-11-15 2010-11-02 Rambus Inc. Iterative interference canceller for wireless multiple-access systems with multiple receive antennas
US7702048B2 (en) * 2005-11-15 2010-04-20 Tensorcomm, Incorporated Iterative interference cancellation using mixed feedback weights and stabilizing step sizes
US7623602B2 (en) * 2005-11-15 2009-11-24 Tensorcomm, Inc. Iterative interference canceller for wireless multiple-access systems employing closed loop transmit diversity
US20070110135A1 (en) * 2005-11-15 2007-05-17 Tommy Guess Iterative interference cancellation for MIMO-OFDM receivers
US8804885B2 (en) * 2005-12-19 2014-08-12 Agere Systems Llc Delay compensation in equalizer-based receiver
EP1985027A1 (fr) * 2006-02-03 2008-10-29 Nxp B.V. Procédé d'adaptation au niveau des symboles de coefficients d'égaliseur, mémoire, égaliseur et récepteur pour la mise en oeuvre du procédé
WO2007096799A1 (fr) * 2006-02-22 2007-08-30 Nxp B.V. Méthode d'adaptation niveau symbole, mémoire, égaliseur et récepteur pour implémenter cette méthode
KR100821480B1 (ko) 2006-12-22 2008-04-11 동부일렉트로닉스 주식회사 이미지 센서 및 그의 제조방법
US7877662B2 (en) * 2007-03-23 2011-01-25 International Business Machines Corporation Reverse concatenation for product codes
US7873894B2 (en) * 2007-03-23 2011-01-18 International Business Machines Corporation Reverse concatenation for product codes
US8098767B2 (en) 2007-12-20 2012-01-17 Qualcomm Incorporated Receiver adjustment between pilot bursts
US7948703B1 (en) * 2008-01-30 2011-05-24 Marvell International Ltd. Adaptive target optimization methods and systems for noise whitening based viterbi detectors
KR101597090B1 (ko) * 2008-06-19 2016-02-24 삼성전자주식회사 이동통신 시스템의 수신 장치 및 방법
US9647680B2 (en) * 2015-01-23 2017-05-09 Infineon Technologies Ag Walsh encoding for peripheral sensor interface 5
US10903951B2 (en) * 2015-06-05 2021-01-26 Futurewei Technologies, Inc. Systems and methods for adaptive pilot allocation
US9942060B2 (en) * 2015-08-01 2018-04-10 Intel IP Corporation Techniques for performing multiple-input and multiple-output training using a beam refinement packet
US10285174B2 (en) * 2016-01-11 2019-05-07 Qualcomm Incorporated Uplink data channel design for narrowband devices

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5103459B1 (en) 1990-06-25 1999-07-06 Qualcomm Inc System and method for generating signal waveforms in a cdma cellular telephone system
US5353300A (en) * 1993-06-07 1994-10-04 Motorola, Inc. Communication method for an adaptive direct sequence CDMA communication system
US5692006A (en) 1995-07-31 1997-11-25 Qualcomm Incorporated Adaptive despreader
US6175588B1 (en) 1997-12-30 2001-01-16 Motorola, Inc. Communication device and method for interference suppression using adaptive equalization in a spread spectrum communication system
GB9904421D0 (en) 1999-02-25 1999-04-21 Univ Edinburgh Telecommunications receiver
US6522683B1 (en) * 2000-08-10 2003-02-18 Qualcomm, Incorporated Method and apparatus for adaptive linear equalization for walsh covered modulation

Also Published As

Publication number Publication date
HK1060232A1 (en) 2004-07-30
US6522683B1 (en) 2003-02-18
WO2002015502A2 (fr) 2002-02-21
US7035316B2 (en) 2006-04-25
WO2002015502A3 (fr) 2002-08-08
BR0113095A (pt) 2003-09-16
KR20030027019A (ko) 2003-04-03
JP2004507166A (ja) 2004-03-04
US20030123525A1 (en) 2003-07-03
TW561746B (en) 2003-11-11
CN1214584C (zh) 2005-08-10
EP1308008A2 (fr) 2003-05-07
CN1461548A (zh) 2003-12-10

Similar Documents

Publication Publication Date Title
AU2001277239A1 (en) Adaptive linear equalisation for walsh-modulated
AU2002236659A1 (en) Adaptive transforms
EP1463186B8 (fr) Verin lineaire
AU2582401A (en) Purpose-based adaptive rendering
AU2001295030A1 (en) Adaptive method for polling
AU3434300A (en) Adaptive channel equalizer
AU2000273430A1 (en) Reduced-energy-consumption actuator
AU2002351212A1 (en) Uri munging
AUPR604101A0 (en) Aptamers
AU2001292259A1 (en) Linear actuator
AU2001265089A1 (en) Rc-timer scheme
AU2371601A (en) Hydrogels
AU7034500A (en) Linear actuator
AU2002345263A1 (en) Complex adaptive systems
AU2001265871A1 (en) Substituted sulfonylaminopyrimidines
AU2001254731A1 (en) Substituted phenyluracils
AU2002359464A1 (en) Angiopioetin related factors
AU2001272651A1 (en) Valves
AU2001258255A1 (en) Substituted benzoylcyclohexenones
AU2001220281A1 (en) Rollerboard for road-skiing
EP1185135A3 (fr) Mentonnière pour casque d'écoute
AU2001223813A1 (en) Personalized hardware
AU2002223508A1 (en) Linear actuator
AU3975700A (en) Adaptive filter equalisation techniques
EP1167808A3 (fr) Support en élastomère