SE522841C2 - Radio med effektiv modulering av toppeffekt och bandbredd - Google Patents

Radio med effektiv modulering av toppeffekt och bandbredd

Info

Publication number
SE522841C2
SE522841C2 SE9704633A SE9704633A SE522841C2 SE 522841 C2 SE522841 C2 SE 522841C2 SE 9704633 A SE9704633 A SE 9704633A SE 9704633 A SE9704633 A SE 9704633A SE 522841 C2 SE522841 C2 SE 522841C2
Authority
SE
Sweden
Prior art keywords
peak
symbol
baseband
data symbols
signal
Prior art date
Application number
SE9704633A
Other languages
English (en)
Swedish (sv)
Other versions
SE9704633D0 (sv
SE9704633L (sv
Inventor
Scott L Miller
Robert J O'dea
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 SE9704633D0 publication Critical patent/SE9704633D0/xx
Publication of SE9704633L publication Critical patent/SE9704633L/
Publication of SE522841C2 publication Critical patent/SE522841C2/sv

Links

Classifications

    • 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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Transmitters (AREA)
SE9704633A 1995-06-12 1997-12-12 Radio med effektiv modulering av toppeffekt och bandbredd SE522841C2 (sv)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/489,630 US5621762A (en) 1995-06-12 1995-06-12 Radio with peak power and bandwidth efficient modulation
PCT/US1996/007608 WO1996042161A1 (en) 1995-06-12 1996-05-23 Radio with peak power and bandwidth efficient modulation

Publications (3)

Publication Number Publication Date
SE9704633D0 SE9704633D0 (sv) 1997-12-12
SE9704633L SE9704633L (sv) 1998-02-05
SE522841C2 true SE522841C2 (sv) 2004-03-09

Family

ID=23944636

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9704633A SE522841C2 (sv) 1995-06-12 1997-12-12 Radio med effektiv modulering av toppeffekt och bandbredd

Country Status (14)

Country Link
US (1) US5621762A (ko)
EP (1) EP0883953A4 (ko)
JP (1) JPH11507791A (ko)
KR (1) KR100264025B1 (ko)
CN (1) CN1106103C (ko)
AU (1) AU702758B2 (ko)
BR (1) BR9609362A (ko)
CA (1) CA2224572C (ko)
CZ (1) CZ402197A3 (ko)
DE (1) DE19681454T1 (ko)
GB (1) GB2317795B (ko)
NZ (1) NZ309293A (ko)
SE (1) SE522841C2 (ko)
WO (1) WO1996042161A1 (ko)

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US5696794A (en) * 1996-04-04 1997-12-09 Motorola, Inc. Method and apparatus for conditioning digitally modulated signals using channel symbol adjustment
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US6130918A (en) * 1997-12-01 2000-10-10 Nortel Networks Limited Method and apparatus for reducing the peak-to-average ratio in a multicarrier communication system
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US6424681B1 (en) * 1998-04-20 2002-07-23 The Board Of Trustees Of The Leland Stanford Junior University Peak to average power ratio reduction
US6314146B1 (en) 1998-06-05 2001-11-06 The Board Of Trustees Of The Leland Stanford Junior University Peak to average power ratio reduction
US6512797B1 (en) 1998-04-20 2003-01-28 The Board Of Trustees Of The Leland Stanford Junior University Peak to average power ratio reduction
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US6104761A (en) * 1998-08-28 2000-08-15 Sicom, Inc. Constrained-envelope digital-communications transmission system and method therefor
US6366619B1 (en) 1998-08-28 2002-04-02 Sicom, Inc. Constrained-envelope transmitter and method therefor
SE513863C2 (sv) * 1999-01-29 2000-11-20 Ericsson Telefon Ab L M Förfarande och anordning för klippning i ett CDMA-system
US6242975B1 (en) 1999-05-25 2001-06-05 Conexant Systems, Inc. Envelope peak and trough limiting to improve amplifier efficiency and distortion characteristics
US6128350A (en) * 1999-08-24 2000-10-03 Usa Digital Radio, Inc. Method and apparatus for reducing peak to average power ratio in digital broadcasting systems
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US6449302B2 (en) * 2000-04-19 2002-09-10 Powerwave Technologies, Inc. System and method for peak power reduction in spread spectrum communications systems
US6449303B2 (en) * 2000-06-20 2002-09-10 Powerwave Technologies, Inc. System and method for peak power reduction in multiple carrier communications systems
WO2002009373A2 (en) * 2000-07-21 2002-01-31 Pmc-Sierra, Ltd. Reduction of peak to average power ratio
US6535073B1 (en) * 2000-08-08 2003-03-18 Advanced Micro Devices, Inc. Device and method for I/Q modulation, frequency translation and upsampling
US6377635B1 (en) * 2000-10-26 2002-04-23 International Business Machines Corporation Method and apparatus for viterbi detection of generalized partial response signals using partial matched filter and matched filter metrics
US20040097202A1 (en) * 2001-03-06 2004-05-20 Akihiko Matsuoka Signal processing apparatus and signal processing method
US7046973B2 (en) * 2001-06-01 2006-05-16 Nokia Corporation Method and circuitry for high power amplifiers with voltage conversion to avoid performance degradation, system shutdown and permanent damage in case of worst case data pattern
GB2377141B (en) * 2001-06-29 2005-03-23 Nokia Corp A transmitter
US7170952B2 (en) 2001-07-02 2007-01-30 Powerwave Technologies, Inc. System and method for post filtering peak power reduction in communications systems
US7095798B2 (en) 2001-08-02 2006-08-22 Powerwave Technologies, Inc. System and method for post filtering peak power reduction in multi-carrier communications systems
US6999522B2 (en) 2001-09-28 2006-02-14 Intersil Americas, Inc. Constrained-envelope digital communications transmitter and method therefor
US6928121B2 (en) 2001-09-28 2005-08-09 Intersil Americas, Inc. Digital transmitter with constrained envelope and spectral regrowth over a plurality of carriers
US20070211829A1 (en) * 2001-10-22 2007-09-13 Matsushita Electric Industrial Co., Ltd. Method and apparatus for pulse optimization for non-linear filtering
US8331490B2 (en) * 2001-10-22 2012-12-11 Panasonic Corporation Methods and apparatus for conditioning communications signals based on detection of high-frequency events in polar domain
US7054385B2 (en) * 2001-10-22 2006-05-30 Tropian, Inc. Reduction of average-to-minimum power ratio in communications signals
EP1331743A1 (en) * 2002-01-18 2003-07-30 Alcatel A method and an electronic circuit for clipping of signals, especially CDMA or OFDM signals, with multiple inputs and outputs
US7697591B2 (en) * 2002-08-26 2010-04-13 Texas Instruments Incorporated Crest factor reduction processor for wireless communications
DE60200378T2 (de) 2002-08-30 2004-09-16 Alcatel Verfahren zur Signalspitzenskalierung und entsprechender Sender
US7450539B1 (en) 2003-02-11 2008-11-11 Analog Devices, Inc. Power regulation for a multi-carrier communication system
US7277494B2 (en) * 2003-06-04 2007-10-02 Honeywell Federal Manufacturing & Technologies, Llc Method of differential-phase/absolute-amplitude QAM
US7239674B2 (en) * 2003-06-04 2007-07-03 Honeywell Federal Manufacturing & Technologies, Llc Method of differential-phase/absolute-amplitude QAM
US7239676B2 (en) * 2003-06-04 2007-07-03 Honeywell Federal Manufacturing & Technologies, Llc Method of differential-phase/absolute-amplitude QAM
US7729410B2 (en) * 2003-06-30 2010-06-01 Nxp B.V. Procedure for BPSK demodulation corresponding to BPSK modulation with reduced envelope peaking
US7352797B2 (en) * 2003-06-30 2008-04-01 Conexant Systems, Inc. Procedure for BPSK modulation with reduced envelope peaking
WO2005055479A1 (ja) * 2003-12-02 2005-06-16 Matsushita Electric Industrial Co., Ltd. マルチキャリア伝送における無線送信装置およびピーク電力抑圧方法
US7542517B2 (en) 2004-02-02 2009-06-02 Ibiquity Digital Corporation Peak-to-average power reduction for FM OFDM transmission
GB2432981B (en) * 2005-11-30 2007-12-27 Motorola Inc Apparatus and method for amplitude variation reduction of a signal
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
US7889800B2 (en) * 2007-05-31 2011-02-15 Telefonaktiebolaget Lm Ericsson (Publ) Memory-saving method for generating soft bit values from an OFDM signal
GB2483290B (en) * 2010-09-03 2015-07-22 Nvidia Technology Uk Ltd Transmitting a signal from a power amplifier
KR101512543B1 (ko) 2012-04-27 2015-04-15 삼성전기주식회사 피크 억제 기능을 갖는 베이스 밴드 처리기, 송신 장치 및 송신 방법
US9077327B2 (en) * 2013-11-04 2015-07-07 Texas Instruments Incorporated Optimized peak detector for the AGC loop in a digital radio receiver
US9768889B2 (en) * 2015-12-14 2017-09-19 Maxlinear Asia Singapore PTE LTD Adaptive symbol mapping modulation
US10084631B2 (en) * 2016-06-06 2018-09-25 Ramot At Tel-Aviv University Ltd. Technique for PAPR reduction in communication channel

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Also Published As

Publication number Publication date
CZ402197A3 (cs) 1998-05-13
SE9704633D0 (sv) 1997-12-12
AU5929496A (en) 1997-01-09
GB2317795A8 (en) 1998-04-16
GB2317795B (en) 1999-10-20
EP0883953A1 (en) 1998-12-16
WO1996042161A1 (en) 1996-12-27
NZ309293A (en) 1999-04-29
CN1191647A (zh) 1998-08-26
JPH11507791A (ja) 1999-07-06
DE19681454T1 (de) 1998-08-20
BR9609362A (pt) 2004-06-29
CN1106103C (zh) 2003-04-16
AU702758B2 (en) 1999-03-04
SE9704633L (sv) 1998-02-05
KR19990022879A (ko) 1999-03-25
CA2224572C (en) 2000-09-12
KR100264025B1 (ko) 2000-08-16
US5621762A (en) 1997-04-15
EP0883953A4 (en) 2001-09-19
GB2317795A (en) 1998-04-01
CA2224572A1 (en) 1996-12-27
GB9726272D0 (en) 1998-02-11

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