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BR9609362A - Radio com modulação eficiente de potência de pico e largura de banda - Google Patents

Radio com modulação eficiente de potência de pico e largura de banda

Info

Publication number
BR9609362A
BR9609362A BR9609362-5A BR9609362A BR9609362A BR 9609362 A BR9609362 A BR 9609362A BR 9609362 A BR9609362 A BR 9609362A BR 9609362 A BR9609362 A BR 9609362A
Authority
BR
Brazil
Prior art keywords
peak power
peak
bandwidth radio
information
efficiently modulated
Prior art date
Application number
BR9609362-5A
Other languages
English (en)
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 BR9609362A publication Critical patent/BR9609362A/pt

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)

Abstract

"RáDIO COM MODULAçãO EFICIENTE DE POTêNCIA DE PICO E LARGURA DE BANDA". Um dispositivo de comunicação (300) inclui um modulador digital (301), um Processador de Sinal Digital (306) e um amplificador (312). O modulador digital (301) inclui um gerador de informação (304) e um dispositivo de su pressão de pico (402). O dispositivo de supressão de pico (402) inclui um mapeador de símbolo (404) e um escalonador de símbolo (406). As informações geradas pelo gerador (401) são mapeadas em um diagrama de constelação via mapeador de símbolo (404). As informações mapeadas são, então, escalonadas no escalonador (406) a fim de reduzir a relação pico para média do sinal na entrada do amplificador (312).
BR9609362-5A 1995-06-12 1996-05-23 Radio com modulação eficiente de potência de pico e largura de banda BR9609362A (pt)

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 (1)

Publication Number Publication Date
BR9609362A true BR9609362A (pt) 2004-06-29

Family

ID=23944636

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9609362-5A BR9609362A (pt) 1995-06-12 1996-05-23 Radio com modulação eficiente de potência de pico e largura de banda

Country Status (14)

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

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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
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AU2001278971A1 (en) * 2000-07-21 2002-02-05 Pmc-Sierra, Ltd. Systems and methods for reduction of peak to average signal levels of multi-bearer single-carrier and multi-carrier waveforms
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
CN1496640A (zh) * 2001-03-06 2004-05-12 ���µ�����ҵ��ʽ���� 信号处理装置和信号处理方法
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
US6928121B2 (en) 2001-09-28 2005-08-09 Intersil Americas, Inc. Digital transmitter with constrained envelope and spectral regrowth over a plurality of carriers
US6999522B2 (en) 2001-09-28 2006-02-14 Intersil Americas, Inc. Constrained-envelope digital communications transmitter and method therefor
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
US20070211829A1 (en) * 2001-10-22 2007-09-13 Matsushita Electric Industrial Co., Ltd. Method and apparatus for pulse optimization for non-linear filtering
US7054385B2 (en) * 2001-10-22 2006-05-30 Tropian, Inc. Reduction of average-to-minimum power ratio in communications signals
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US7697591B2 (en) * 2002-08-26 2010-04-13 Texas Instruments Incorporated Crest factor reduction processor for wireless communications
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US7450539B1 (en) 2003-02-11 2008-11-11 Analog Devices, Inc. Power regulation for a multi-carrier communication system
US7239676B2 (en) * 2003-06-04 2007-07-03 Honeywell Federal Manufacturing & Technologies, Llc Method of differential-phase/absolute-amplitude QAM
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
US7352797B2 (en) * 2003-06-30 2008-04-01 Conexant Systems, Inc. Procedure for BPSK modulation with reduced envelope peaking
US7729410B2 (en) * 2003-06-30 2010-06-01 Nxp B.V. Procedure for BPSK demodulation corresponding to 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
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Also Published As

Publication number Publication date
WO1996042161A1 (en) 1996-12-27
JPH11507791A (ja) 1999-07-06
US5621762A (en) 1997-04-15
CZ402197A3 (cs) 1998-05-13
SE522841C2 (sv) 2004-03-09
DE19681454T1 (de) 1998-08-20
SE9704633D0 (sv) 1997-12-12
SE9704633L (sv) 1998-02-05
GB2317795B (en) 1999-10-20
AU5929496A (en) 1997-01-09
GB2317795A (en) 1998-04-01
KR100264025B1 (ko) 2000-08-16
CA2224572A1 (en) 1996-12-27
NZ309293A (en) 1999-04-29
AU702758B2 (en) 1999-03-04
GB9726272D0 (en) 1998-02-11
EP0883953A4 (en) 2001-09-19
CA2224572C (en) 2000-09-12
CN1191647A (zh) 1998-08-26
GB2317795A8 (en) 1998-04-16
CN1106103C (zh) 2003-04-16
KR19990022879A (ko) 1999-03-25
EP0883953A1 (en) 1998-12-16

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]
B08H Application fees: decision cancelled [chapter 8.8 patent gazette]

Free format text: REFERENTE AO DESPACHO PUBLICADO NA RPI 1801 DE 20050712 POR TER SIDO APRESENTADA PAPELETA DE ESCLARECIMENTO.

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

Free format text: INDEFERIDO COM BASE NO ART. 8O COMBINADO COM O ART. 13 E ART.10 DA LPI

B09B Patent application refused [chapter 9.2 patent gazette]

Free format text: MANTIDO O INDEFERIMENTO UMA VEZ QUE NAO FOI APRESENTADO RECURSO DENTRO DO PRAZO LEGAL.