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BR9704890A - Estimação do canal de controle de potência com utilização de desmultiplicação do coeficiente dinâmico - Google Patents

Estimação do canal de controle de potência com utilização de desmultiplicação do coeficiente dinâmico

Info

Publication number
BR9704890A
BR9704890A BR9704890A BR9704890A BR9704890A BR 9704890 A BR9704890 A BR 9704890A BR 9704890 A BR9704890 A BR 9704890A BR 9704890 A BR9704890 A BR 9704890A BR 9704890 A BR9704890 A BR 9704890A
Authority
BR
Brazil
Prior art keywords
estimation
control channel
power control
coefficient multiplication
dynamic coefficient
Prior art date
Application number
BR9704890A
Other languages
English (en)
Other versions
BR9704890B1 (pt
Inventor
Christopher P Larosa
Michael J Carney
Fuyun Ling
Christopher J Becker
Original Assignee
Motorola 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 Motorola Inc filed Critical Motorola Inc
Publication of BR9704890A publication Critical patent/BR9704890A/pt
Publication of BR9704890B1 publication Critical patent/BR9704890B1/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details 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
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • H04B1/7117—Selection, re-selection, allocation or re-allocation of paths to fingers, e.g. timing offset control of allocated fingers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/38—TPC being performed in particular situations
    • H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details 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
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details 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
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/709—Correlator structure
    • H04B1/7093—Matched filter type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details 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
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7113—Determination of path profile
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • 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
    • H04L25/0214—Channel estimation of impulse response of a single coefficient
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/54—Signalisation aspects of the TPC commands, e.g. frame structure
    • H04W52/60—Signalisation aspects of the TPC commands, e.g. frame structure using different transmission rates for TPC commands
    • 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
    • H04L25/0226—Channel estimation using sounding signals sounding signals per se

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)
BRPI9704890-9A 1997-02-28 1997-09-26 demodulador e método para demodular sinais de espalhamento de espectro usando otimização de canal de controle de potência através do redimensionamento dinámico do coeficiente do filtro (iir). BR9704890B1 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/808,331 US5799011A (en) 1996-03-29 1997-02-28 CDMA power control channel estimation using dynamic coefficient scaling

Publications (2)

Publication Number Publication Date
BR9704890A true BR9704890A (pt) 1998-11-24
BR9704890B1 BR9704890B1 (pt) 2010-09-21

Family

ID=25198485

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI9704890-9A BR9704890B1 (pt) 1997-02-28 1997-09-26 demodulador e método para demodular sinais de espalhamento de espectro usando otimização de canal de controle de potência através do redimensionamento dinámico do coeficiente do filtro (iir).

Country Status (6)

Country Link
US (2) US5799011A (pt)
JP (1) JP3989600B2 (pt)
KR (1) KR100296571B1 (pt)
CN (1) CN1087885C (pt)
BR (1) BR9704890B1 (pt)
GB (1) GB2322773B (pt)

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US6678311B2 (en) 1996-05-28 2004-01-13 Qualcomm Incorporated High data CDMA wireless communication system using variable sized channel codes
US6067315A (en) * 1997-12-04 2000-05-23 Telefonaktiebolaget Lm Ericsson Method and apparatus for coherently-averaged power estimation
US6347080B2 (en) * 1998-09-09 2002-02-12 Qualcomm, Inc. Energy based communication rate detection system and method
JP3397237B2 (ja) * 1998-09-29 2003-04-14 日本電気株式会社 Ｃｄｍａ通信システムと移動局およびその送信電力制御方法
US6331975B1 (en) * 1998-10-28 2001-12-18 Texas Instruments Incorporated User data indicator for discontinuous transmission
US6256338B1 (en) * 1998-11-30 2001-07-03 Motorola, Inc. Method for determining fading correction factor in a communication system
US6542562B1 (en) * 1999-02-09 2003-04-01 Telefonaktiebolaget Lm Ericsson (Publ) Approximated MMSE-based channel estimator in a mobile communication system
US6249683B1 (en) * 1999-04-08 2001-06-19 Qualcomm Incorporated Forward link power control of multiple data streams transmitted to a mobile station using a common power control channel
US6493329B1 (en) * 1999-08-23 2002-12-10 Qualcomm Incorporated Adaptive channel estimation in a wireless communication system
US6801564B2 (en) * 2000-02-23 2004-10-05 Ipr Licensing, Inc. Reverse link correlation filter in wireless communication systems
US6542756B1 (en) 2000-02-29 2003-04-01 Lucent Technologies Inc. Method for detecting forward link power control bits in a communication system
WO2001068547A1 (en) 2000-03-14 2001-09-20 James Hardie Research Pty Limited Fiber cement building materials with low density additives
US6874096B1 (en) 2000-06-23 2005-03-29 2Wire, Inc. Apparatus and method for detecting packet arrival time
US7072999B1 (en) * 2000-06-27 2006-07-04 2Wire, Inc. Robust packet arrival time detector using estimated signal power
KR100377969B1 (ko) * 2000-07-10 2003-03-29 이용환 적응 채널 추정 장치를 이용한 직접시퀀스 확산대역시스템 수신 장치
DE60107932T2 (de) * 2001-05-29 2005-12-08 Lucent Technologies Inc. Verfahren zur Verbesserung des Empfangs eines CDMA-Empfängers und CDMA-Empfänger dazu
JP3866535B2 (ja) * 2001-06-26 2007-01-10 株式会社東芝 符号分割多重通信装置及びその伝送路補正タイミング制御方法
WO2003009489A1 (en) * 2001-07-13 2003-01-30 Kawasaki Microelectronics, Inc. Cdma reception apparatus and cdma reception method
GB2386038A (en) * 2002-02-27 2003-09-03 Motorola Inc Channel estimation in a radio receiver
US8306176B2 (en) * 2002-06-19 2012-11-06 Texas Instruments Incorporated Fine-grained gear-shifting of a digital phase-locked loop (PLL)
AU2002368108A1 (en) * 2002-07-24 2004-02-09 Motorola, Inc., A Corporation Of The State Of Delaware Method and apparatus for acquiring a carrier frequency in a cdma communication system
CN1640039A (zh) * 2003-01-23 2005-07-13 连宇通信有限公司 一种多径搜索和跟踪的方法及装置
DE10322943B4 (de) * 2003-05-21 2005-10-06 Infineon Technologies Ag Hardware-Vorrichtung zur Aufbereitung von Pilotsymbolen für eine Kanalschätzung mittels adaptiver Tiefpassfilterung
DE10329060B4 (de) * 2003-06-27 2006-02-09 Infineon Technologies Ag Vorrichtung und Verfahren zur Leistungsmessung von Basistationen in Mobilfunkempfängern
US20050249274A1 (en) * 2004-05-10 2005-11-10 Larosa Christopher P Linear filter equalizer
KR100875924B1 (ko) * 2007-03-14 2008-12-26 한국전자통신연구원 Ｒｆｉｄ 태그의 전력 관리 장치 및 그 방법
US8209927B2 (en) 2007-12-20 2012-07-03 James Hardie Technology Limited Structural fiber cement building materials
US8073076B2 (en) * 2007-12-21 2011-12-06 Qualcomm Incorporated Method and apparatus for processing a communication signal
US20130257667A1 (en) * 2012-03-30 2013-10-03 Broadcom Corporation Antenna Tuning

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* Cited by examiner, † Cited by third party
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US4901307A (en) * 1986-10-17 1990-02-13 Qualcomm, Inc. Spread spectrum multiple access communication system using satellite or terrestrial repeaters
US5812542A (en) * 1996-03-18 1998-09-22 Motorola, Inc. Method for determining weighting coefficients in a CDMA radio receiver
GB9315845D0 (en) * 1993-07-30 1993-09-15 Roke Manor Research Apparatus for use in equipment providing a digital radio link between a fixed and a mobile radio unit
US5572552A (en) * 1994-01-27 1996-11-05 Ericsson Ge Mobile Communications Inc. Method and system for demodulation of downlink CDMA signals
US5802110A (en) * 1994-02-16 1998-09-01 Matsushita Electric Industrial Co., Ltd. Wireless mobile system
US5544156A (en) * 1994-04-29 1996-08-06 Telefonaktiebolaget Lm Ericsson Direct sequence CDMA coherent uplink detector
US5717723A (en) * 1994-08-17 1998-02-10 Roke Manor Research Limited Apparatus for use in equipment providing a digital radio link between a fixed radio unit and a mobile radio unit
US5619524A (en) * 1994-10-04 1997-04-08 Motorola, Inc. Method and apparatus for coherent communication reception in a spread-spectrum communication system
US5659573A (en) * 1994-10-04 1997-08-19 Motorola, Inc. Method and apparatus for coherent reception in a spread-spectrum receiver
US5696699A (en) 1995-02-13 1997-12-09 Intel Corporation Integrated cellular data/voice communication system working under one operating system
US5612991A (en) 1995-03-31 1997-03-18 Intel Corporation Use of RSSI indication for improved data transmission over amps network
KR100189525B1 (ko) * 1995-08-08 1999-06-01 윤종용 시그마 델타 변조방식의 디지탈/아나로그 변환장치
US5799037A (en) * 1996-02-16 1998-08-25 David Sarnoff Research Center Inc. Receiver capable of demodulating multiple digital modulation formats
US5737327A (en) * 1996-03-29 1998-04-07 Motorola, Inc. Method and apparatus for demodulation and power control bit detection in a spread spectrum communication system
US5787125A (en) * 1996-05-06 1998-07-28 Motorola, Inc. Apparatus for deriving in-phase and quadrature-phase baseband signals from a communication signal
US6047022A (en) * 1997-02-28 2000-04-04 Orckit Communication Ltd. Apparatus and method for transmission of high speed data over communication channels

Also Published As

Publication number Publication date
JP3989600B2 (ja) 2007-10-10
KR100296571B1 (ko) 2001-08-07
BR9704890B1 (pt) 2010-09-21
CN1192089A (zh) 1998-09-02
US6243410B1 (en) 2001-06-05
US5799011A (en) 1998-08-25
GB2322773A (en) 1998-09-02
GB2322773B (en) 2001-09-26
KR19980069970A (ko) 1998-10-26
JPH10242906A (ja) 1998-09-11
CN1087885C (zh) 2002-07-17
GB9719113D0 (en) 1997-11-12

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Legal Events

Date Code Title Description
B15K Others concerning applications: alteration of classification

Free format text: ALTERADA A CLASSIFICACAO PARA INT.CL.2009.01: H04W 52/14

Ipc: H04Q 7/30 (2008.04)

B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 21/09/2010, OBSERVADAS AS CONDICOES LEGAIS.

B25A Requested transfer of rights approved

Owner name: FREESCALE SEMICONDUCTOR, INC. (US)

Free format text: TRANSFERIDO DE: MOTOROLA, INC.

B15K Others concerning applications: alteration of classification

Ipc: H04W 52/14 (2009.01)

B25A Requested transfer of rights approved
B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 21.09.2020