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FI20012059A0 - Menetelmä ja järjestely signaalin rajoittamiseksi radiolähettimessä - Google Patents

Menetelmä ja järjestely signaalin rajoittamiseksi radiolähettimessä

Info

Publication number
FI20012059A0
FI20012059A0 FI20012059A FI20012059A FI20012059A0 FI 20012059 A0 FI20012059 A0 FI 20012059A0 FI 20012059 A FI20012059 A FI 20012059A FI 20012059 A FI20012059 A FI 20012059A FI 20012059 A0 FI20012059 A0 FI 20012059A0
Authority
FI
Finland
Prior art keywords
limiting
arrangement
signal
radio transmitter
transmitter
Prior art date
Application number
FI20012059A
Other languages
English (en)
Swedish (sv)
Inventor
Tapio Vuopala
Olli Piirainen
Original Assignee
Nokia 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 Nokia Corp filed Critical Nokia Corp
Priority to FI20012059A priority Critical patent/FI20012059A0/fi
Publication of FI20012059A0 publication Critical patent/FI20012059A0/fi
Priority to CN02819784.4A priority patent/CN1565114B/zh
Priority to DE60237533T priority patent/DE60237533D1/de
Priority to US10/493,396 priority patent/US7340004B2/en
Priority to EP02770012A priority patent/EP1444814B1/en
Priority to PCT/FI2002/000826 priority patent/WO2003036897A1/en

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
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/70755—Setting of lock conditions, e.g. threshold
    • 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
    • H04L27/2614—Peak power aspects
    • H04L27/2623—Reduction thereof by clipping
    • H04L27/2624—Reduction thereof by clipping by soft clipping
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70706—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation with means for reducing the peak-to-average power ratio

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Mobile Radio Communication Systems (AREA)
FI20012059A 2001-10-24 2001-10-24 Menetelmä ja järjestely signaalin rajoittamiseksi radiolähettimessä FI20012059A0 (fi)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FI20012059A FI20012059A0 (fi) 2001-10-24 2001-10-24 Menetelmä ja järjestely signaalin rajoittamiseksi radiolähettimessä
CN02819784.4A CN1565114B (zh) 2001-10-24 2002-10-23 用于在无线电发射机内限制信号的方法与装置
DE60237533T DE60237533D1 (de) 2001-10-24 2002-10-23 Verfahren und anordnung zur signalbegrenzung in einem funksender
US10/493,396 US7340004B2 (en) 2001-10-24 2002-10-23 Method and arrangement for limiting signal in radio transmitter
EP02770012A EP1444814B1 (en) 2001-10-24 2002-10-23 Method and arrangement for limiting signal in radio transmitter
PCT/FI2002/000826 WO2003036897A1 (en) 2001-10-24 2002-10-23 Method and arrangement for limiting signal in radio transmitter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20012059A FI20012059A0 (fi) 2001-10-24 2001-10-24 Menetelmä ja järjestely signaalin rajoittamiseksi radiolähettimessä

Publications (1)

Publication Number Publication Date
FI20012059A0 true FI20012059A0 (fi) 2001-10-24

Family

ID=8562113

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20012059A FI20012059A0 (fi) 2001-10-24 2001-10-24 Menetelmä ja järjestely signaalin rajoittamiseksi radiolähettimessä

Country Status (6)

Country Link
US (1) US7340004B2 (fi)
EP (1) EP1444814B1 (fi)
CN (1) CN1565114B (fi)
DE (1) DE60237533D1 (fi)
FI (1) FI20012059A0 (fi)
WO (1) WO2003036897A1 (fi)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2003240195A1 (en) * 2003-06-18 2005-01-04 Nokia Corporation Dynamic range control of an audio signal and method of its operation
US7817731B2 (en) * 2003-09-22 2010-10-19 Infineon Technologies Ag Amplitude compression of signals in a multicarrier system
JP4617232B2 (ja) * 2005-09-21 2011-01-19 株式会社日立国際電気 送信機
JP4750592B2 (ja) * 2006-03-17 2011-08-17 富士通株式会社 ピーク抑圧方法、ピーク抑圧装置、無線送信装置
US8259846B2 (en) * 2008-07-30 2012-09-04 Motorola Mobility Llc Apparatus and method for generating a multicarrier communication signal having a reduced crest factor
FI20195895A1 (fi) 2019-10-16 2021-04-17 Nokia Solutions & Networks Oy Rajoituskohinan jakaminen kaistojen välillä

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5287387A (en) * 1992-03-06 1994-02-15 Motorola, Inc. Low splatter peak-to-average signal reduction
JP2787894B2 (ja) 1994-05-30 1998-08-20 日本電気株式会社 マルチキャリアディジタル変調用包絡線制御変調装置
US5490172A (en) 1994-07-05 1996-02-06 Airnet Communications Corporation Reducing peak-to-average variance of a composite transmitted signal via out-of-band artifact signaling
US5638403A (en) * 1995-04-28 1997-06-10 Motorola, Inc. Low-splatter peak-to-average signal reduction with interpolation
US5742595A (en) * 1995-06-02 1998-04-21 Dsc Communications Corporation Processing CDMA signals
US5696794A (en) * 1996-04-04 1997-12-09 Motorola, Inc. Method and apparatus for conditioning digitally modulated signals using channel symbol adjustment
US6175551B1 (en) * 1997-07-31 2001-01-16 Lucent Technologies, Inc. Transmission system and method employing peak cancellation to reduce the peak-to-average power ratio
EP0940925A1 (en) * 1998-03-05 1999-09-08 Lucent Technologies Inc. System and method to reduce the peak-to-average power ratio in a DS-CMDA transmitter
US6298094B1 (en) 1998-03-30 2001-10-02 Motorola, Inc. Method and apparatus for power control in a transmitter
US6356606B1 (en) * 1998-07-31 2002-03-12 Lucent Technologies Inc. Device and method for limiting peaks of a signal
US6236864B1 (en) * 1998-11-27 2001-05-22 Nortel Networks Limited CDMA transmit peak power reduction
US6337606B1 (en) 1999-02-02 2002-01-08 Sicom, Inc. Digital communications modulator having a modulation processor which supports high data rates

Also Published As

Publication number Publication date
DE60237533D1 (de) 2010-10-14
CN1565114A (zh) 2005-01-12
WO2003036897A1 (en) 2003-05-01
EP1444814A1 (en) 2004-08-11
EP1444814B1 (en) 2010-09-01
CN1565114B (zh) 2011-06-08
US20040258175A1 (en) 2004-12-23
US7340004B2 (en) 2008-03-04

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