BR0004033A - Método e aparelho para reduzir potência de canal adjacente em sistemas de comunicação sem fio - Google Patents

Método e aparelho para reduzir potência de canal adjacente em sistemas de comunicação sem fio

Info

Publication number
BR0004033A
BR0004033A BR0004033-9A BR0004033A BR0004033A BR 0004033 A BR0004033 A BR 0004033A BR 0004033 A BR0004033 A BR 0004033A BR 0004033 A BR0004033 A BR 0004033A
Authority
BR
Brazil
Prior art keywords
adjacent channel
wireless communication
communication systems
channel power
amplifier
Prior art date
Application number
BR0004033-9A
Other languages
English (en)
Portuguese (pt)
Inventor
Robert Everest Johnson
George Philip Vella-Coleiro
Mark Thomas Leney
Original Assignee
Lucent Technologies 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 Lucent Technologies Inc filed Critical Lucent Technologies Inc
Publication of BR0004033A publication Critical patent/BR0004033A/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/36—Modulator circuits; Transmitter circuits
    • H04L27/366—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator
    • H04L27/367—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator using predistortion
    • H04L27/368—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator using predistortion adaptive predistortion
    • 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
    • H04B1/62—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 for providing a predistortion of the signal in the transmitter and corresponding correction in the receiver, e.g. for improving the signal/noise ratio

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Transmitters (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
BR0004033-9A 1999-09-14 2000-09-06 Método e aparelho para reduzir potência de canal adjacente em sistemas de comunicação sem fio BR0004033A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/395,490 US7409007B1 (en) 1999-09-14 1999-09-14 Method and apparatus for reducing adjacent channel power in wireless communication systems

Publications (1)

Publication Number Publication Date
BR0004033A true BR0004033A (pt) 2001-04-17

Family

ID=23563261

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0004033-9A BR0004033A (pt) 1999-09-14 2000-09-06 Método e aparelho para reduzir potência de canal adjacente em sistemas de comunicação sem fio

Country Status (9)

Country Link
US (1) US7409007B1 (enExample)
EP (1) EP1085668B1 (enExample)
JP (1) JP4676052B2 (enExample)
KR (1) KR100739356B1 (enExample)
CN (1) CN1288341A (enExample)
AU (1) AU773197B2 (enExample)
BR (1) BR0004033A (enExample)
CA (1) CA2317901C (enExample)
DE (1) DE60044485D1 (enExample)

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US7158563B2 (en) * 2001-06-01 2007-01-02 The Board Of Trustees Of The Leland Stanford Junior University Dynamic digital communication system control
CN1221073C (zh) * 2001-06-25 2005-09-28 诺基亚公司 在无线电发射机内限制信号的方法和设备
KR20030024241A (ko) * 2001-09-17 2003-03-26 엘지전자 주식회사 블루투스 송신회로
US7248642B1 (en) 2002-02-05 2007-07-24 Andrew Corporation Frequency-dependent phase pre-distortion for reducing spurious emissions in communication networks
US7266159B2 (en) 2002-03-08 2007-09-04 Andrew Corporation Frequency-dependent magnitude pre-distortion on non-baseband input signals for reducing spurious emissions in communication networks
US7197085B1 (en) * 2002-03-08 2007-03-27 Andrew Corporation Frequency-dependent magnitude pre-distortion for reducing spurious emissions in communication networks
JP3637323B2 (ja) 2002-03-19 2005-04-13 株式会社東芝 受信装置、送受信装置及び受信方法
US8380143B2 (en) 2002-05-01 2013-02-19 Dali Systems Co. Ltd Power amplifier time-delay invariant predistortion methods and apparatus
US8811917B2 (en) 2002-05-01 2014-08-19 Dali Systems Co. Ltd. Digital hybrid mode power amplifier system
US7139327B2 (en) 2002-06-10 2006-11-21 Andrew Corporation Digital pre-distortion of input signals for reducing spurious emissions in communication networks
US7450636B2 (en) 2002-09-05 2008-11-11 Avago Technologies General Ip (Singapore) Pte. Ltd. Adaptive transmit equalizer
US7035601B2 (en) * 2003-02-27 2006-04-25 Nokia Corporation Data transmission method, base station and transmitter for compensating for non-linearities in a transmission chain
US7251293B2 (en) 2003-06-27 2007-07-31 Andrew Corporation Digital pre-distortion for the linearization of power amplifiers with asymmetrical characteristics
US7738544B2 (en) 2004-01-30 2010-06-15 Electronics & Telecommunications Research Institute Apparatus and method for measuring received signal strength indicator, and recording medium storing program embodying the same method
KR100553434B1 (ko) 2004-08-13 2006-02-20 주식회사 팬택앤큐리텔 Ｒｆ 수신 장치
US7787562B2 (en) 2004-12-29 2010-08-31 Motorola, Inc. Method and apparatus for adaptive modulation of wireless communication signals
JP5085896B2 (ja) * 2006-02-17 2012-11-28 富士通株式会社 信号ピーク電圧抑圧装置
US9026067B2 (en) * 2007-04-23 2015-05-05 Dali Systems Co. Ltd. Remotely reconfigurable power amplifier system and method
WO2008078195A2 (en) 2006-12-26 2008-07-03 Dali Systems Co., Ltd. Method and system for baseband predistortion linearization in multi-channel wideband communication systems
WO2009109808A2 (en) 2007-12-07 2009-09-11 Dali Systems Co. Ltd. Baseband-derived rf digital predistortion
KR101145830B1 (ko) * 2008-10-29 2012-05-17 주식회사 케이제이티 전치왜곡장치 및 간섭억제시스템 필터-유닛이 적용된 이동통신장치의 출력단
US8358680B2 (en) * 2008-12-23 2013-01-22 Apple Inc. Reducing power levels associated with two or more signals using peak reduction distortion that is derived from a combined signal
JP5244698B2 (ja) * 2009-05-18 2013-07-24 アイコム株式会社 送信電力制御装置及び送信電力制御方法
KR101829517B1 (ko) 2010-09-14 2018-02-14 달리 시스템즈 씨오. 엘티디. 원격으로 재구성가능한 분산 안테나 시스템 및 방법
US8711976B2 (en) 2011-05-12 2014-04-29 Andrew Llc Pre-distortion architecture for compensating non-linear effects
US8792572B1 (en) * 2013-05-30 2014-07-29 Telefonaktiebolaget L M Ericsson (Publ) Universal peak power reduction in communication radios
JP2015142325A (ja) 2014-01-30 2015-08-03 富士通株式会社 歪補償装置および歪補償方法
WO2019048330A1 (en) * 2017-09-11 2019-03-14 Telefonaktiebolaget Lm Ericsson (Publ) TRANSMIT POWER CONTROL IN A WIRELESS COMMUNICATION NETWORK
CN112262369B (zh) * 2018-07-26 2024-04-02 上海诺基亚贝尔股份有限公司 用于数据处理的方法、装置和计算机可读介质
US12231283B1 (en) 2023-08-08 2025-02-18 Rockwell Collins, Inc. System and method for using FPGA look-up table as quadrature digital correlator

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GB2265270B (en) * 1992-03-02 1996-06-12 Motorola Ltd Rf power amplifier with linearization
JP2718398B2 (ja) * 1995-06-30 1998-02-25 日本電気株式会社 Ｃｄｍａ基地局送信装置
JP3221335B2 (ja) * 1996-11-19 2001-10-22 松下電器産業株式会社 非線形歪補償装置
DE69728651T2 (de) 1996-11-19 2004-08-19 Matsushita Electric Industrial Co., Ltd., Kadoma Sender mit linearisiertem Verstärker
JP3139395B2 (ja) * 1996-11-19 2001-02-26 松下電器産業株式会社 送信装置
US5920808A (en) * 1996-12-12 1999-07-06 Glenayre Electronics, Inc. Method and apparatus for reducing key-up distortion by pre-heating transistors
US5923712A (en) * 1997-05-05 1999-07-13 Glenayre Electronics, Inc. Method and apparatus for linear transmission by direct inverse modeling
US5867065A (en) 1997-05-07 1999-02-02 Glenayre Electronics, Inc. Frequency selective predistortion in a linear transmitter
US5963549A (en) * 1997-12-10 1999-10-05 L-3 Communications Corporation Fixed wireless loop system having baseband combiner predistortion summing table
US6075411A (en) 1997-12-22 2000-06-13 Telefonaktiebolaget Lm Ericsson Method and apparatus for wideband predistortion linearization
US6288610B1 (en) * 1998-03-19 2001-09-11 Fujitsu Limited Method and apparatus for correcting signals, apparatus for compensating for distortion, apparatus for preparing distortion compensating data, and transmitter
US6493543B1 (en) * 1998-10-19 2002-12-10 Powerwave Technologies, Inc. Multichannel amplification system using mask detection
US6614854B1 (en) * 1999-05-28 2003-09-02 Carriercomm, Inc. System and method for adaptive predistortion
US6507732B1 (en) 1999-09-14 2003-01-14 Lucent Technologies Inc. Dynamic path gain compensation for radios in wireless communication systems

Also Published As

Publication number Publication date
AU5655400A (en) 2001-03-15
JP2001127819A (ja) 2001-05-11
EP1085668A3 (en) 2003-09-03
JP4676052B2 (ja) 2011-04-27
DE60044485D1 (de) 2010-07-15
EP1085668B1 (en) 2010-06-02
EP1085668A2 (en) 2001-03-21
CA2317901C (en) 2011-04-19
US7409007B1 (en) 2008-08-05
KR20010050450A (ko) 2001-06-15
CA2317901A1 (en) 2001-03-14
AU773197B2 (en) 2004-05-20
KR100739356B1 (ko) 2007-07-18
CN1288341A (zh) 2001-03-21

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Legal Events

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B15K Others concerning applications: alteration of classification

Free format text: ALTERADA A CLASSIFICACAO H04Q 7/38 PARA INT. CL. 2012.01 H04B 1/04, H04B 1/62.

Ipc: H04B 1/04 (2006.01), H04B 1/62 (2006.01)

B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09B Patent application refused [chapter 9.2 patent gazette]

Free format text: INDEFIRO O PEDIDO DE ACORDO COM O ART .8O COMBINADO COM ART. 13 DA LPI

B09B Patent application refused [chapter 9.2 patent gazette]

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