BR9710418A - M-todo e aparelho para condicionar sinais modulados para comunica-{es digitais - Google Patents

M-todo e aparelho para condicionar sinais modulados para comunica-{es digitais

Info

Publication number
BR9710418A
BR9710418A BR9710418A BR9710418A BR9710418A BR 9710418 A BR9710418 A BR 9710418A BR 9710418 A BR9710418 A BR 9710418A BR 9710418 A BR9710418 A BR 9710418A BR 9710418 A BR9710418 A BR 9710418A
Authority
BR
Brazil
Prior art keywords
todo
conditioning
modulated signals
digital communications
communications
Prior art date
Application number
BR9710418A
Other languages
English (en)
Inventor
Robert J O'dea
David L Muri
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 BR9710418A publication Critical patent/BR9710418A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
    • H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
    • 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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03828—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties
    • H04L25/03834—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties using pulse shaping

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Transmitters (AREA)
BR9710418A 1996-04-04 1997-04-02 M-todo e aparelho para condicionar sinais modulados para comunica-{es digitais BR9710418A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/627,535 US5805640A (en) 1996-04-04 1996-04-04 Method and apparatus for conditioning modulated signals for digital communications
PCT/US1997/005486 WO1997038503A1 (en) 1996-04-04 1997-04-02 Method and apparatus for conditioning modulated signals for digital communications

Publications (1)

Publication Number Publication Date
BR9710418A true BR9710418A (pt) 1999-08-17

Family

ID=24515058

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9710418A BR9710418A (pt) 1996-04-04 1997-04-02 M-todo e aparelho para condicionar sinais modulados para comunica-{es digitais

Country Status (5)

Country Link
US (1) US5805640A (pt)
CN (1) CN1144410C (pt)
BR (1) BR9710418A (pt)
GB (1) GB2328847B (pt)
WO (1) WO1997038503A1 (pt)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6373901B1 (en) * 1996-04-04 2002-04-16 Motorola, Inc. Method and apparatus for conditioning modulated signals using window expansion
US6445747B1 (en) 1998-07-14 2002-09-03 At&T Corporation Method and apparatus to reduce peak to average power ratio in multi-carrier modulation
US6366619B1 (en) 1998-08-28 2002-04-02 Sicom, Inc. Constrained-envelope transmitter and method therefor
US6104761A (en) * 1998-08-28 2000-08-15 Sicom, Inc. Constrained-envelope digital-communications transmission system and method therefor
JP3239880B2 (ja) * 1998-11-02 2001-12-17 日本電気株式会社 レートマッチング方法及びデジタル通信システム
WO2001065685A1 (de) * 2000-03-03 2001-09-07 Siemens Aktiengesellschaft Verfahren und sendeschaltung zur erzeugung eines sendesignals
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
US6968016B1 (en) * 2001-03-22 2005-11-22 Advanced Micro Devices, Inc. Device and method for I/Q modulation, frequency translation and upsampling
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
US7054385B2 (en) * 2001-10-22 2006-05-30 Tropian, Inc. Reduction of average-to-minimum power ratio in communications signals
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
US6614323B2 (en) * 2001-11-27 2003-09-02 Motorola, Inc. Modulated RF pulse waveform generation method and device
US6931240B2 (en) * 2002-03-19 2005-08-16 Powerwave Technologies, Inc. System and method for eliminating signal zero crossings in single and multiple channel communication systems
US7062228B2 (en) * 2004-05-10 2006-06-13 Harris Corporation Cellular communications system using baseband carrier injection and related methods
US7355470B2 (en) 2006-04-24 2008-04-08 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including embodiments for amplifier class transitioning
US7327803B2 (en) 2004-10-22 2008-02-05 Parkervision, Inc. Systems and methods for vector power amplification
US7539257B2 (en) * 2004-11-05 2009-05-26 Harris Corporation Continuous phase modulation system and method with added phase pulse
US7911272B2 (en) 2007-06-19 2011-03-22 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including blended control embodiments
US8031804B2 (en) 2006-04-24 2011-10-04 Parkervision, Inc. Systems and methods of RF tower transmission, modulation, and amplification, including embodiments for compensating for waveform distortion
US7937106B2 (en) 2006-04-24 2011-05-03 ParkerVision, Inc, Systems and methods of RF power transmission, modulation, and amplification, including architectural embodiments of same
US7817733B2 (en) * 2006-06-30 2010-10-19 Motorola Mobility, Inc. Method and system for peak power reduction
US7603089B2 (en) * 2006-08-17 2009-10-13 Panasonic Corporation Methods and apparatus for conditioning low-magnitude events in communications signals
WO2008144017A1 (en) 2007-05-18 2008-11-27 Parkervision, Inc. Systems and methods of rf power transmission, modulation, and amplification
WO2008156800A1 (en) 2007-06-19 2008-12-24 Parkervision, Inc. Combiner-less multiple input single output (miso) amplification with blended control
WO2009005768A1 (en) 2007-06-28 2009-01-08 Parkervision, Inc. Systems and methods of rf power transmission, modulation, and amplification
WO2009145887A1 (en) 2008-05-27 2009-12-03 Parkervision, Inc. Systems and methods of rf power transmission, modulation, and amplification
WO2012139126A1 (en) 2011-04-08 2012-10-11 Parkervision, Inc. Systems and methods of rf power transmission, modulation, and amplification
JP6174574B2 (ja) 2011-06-02 2017-08-02 パーカーヴィジョン インコーポレイテッド アンテナ制御
KR20160058855A (ko) 2013-09-17 2016-05-25 파커비전, 인크. 정보를 포함하는 시간의 함수를 렌더링하기 위한 방법, 장치 및 시스템
FR3038170B1 (fr) * 2015-06-26 2017-08-18 Sigfox Procede et dispositif de reception d’un signal module en phase ou en frequence par une sequence de symboles a deux etats
US10523489B1 (en) * 2018-11-13 2019-12-31 Samsung Electronics Co., Ltd. Polar transmitter with zero crossing avoidance
CN114747185B (zh) * 2019-12-13 2024-02-06 中兴通讯股份有限公司 用于低峰值平均功率比的基于非零插入的调制方案
WO2021093075A1 (en) * 2019-12-13 2021-05-20 Zte Corporation Time-domain modulation scheme for low peak average power ratio

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4646326A (en) * 1983-10-20 1987-02-24 Motorola Inc. QAM modulator circuit
JPH061908B2 (ja) * 1988-02-02 1994-01-05 郵政省通信総合研究所長 伝送路歪補償方式
US5287387A (en) * 1992-03-06 1994-02-15 Motorola, Inc. Low splatter peak-to-average signal reduction

Also Published As

Publication number Publication date
GB2328847B (en) 2000-10-04
GB2328847A (en) 1999-03-03
WO1997038503A1 (en) 1997-10-16
US5805640A (en) 1998-09-08
GB9821576D0 (en) 1998-11-25
CN1217842A (zh) 1999-05-26
CN1144410C (zh) 2004-03-31

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Legal Events

Date Code Title Description
B08F Application fees: application dismissed [chapter 8.6 patent gazette]

Free format text: REFERENTE A 5A,6A,7A,8A,9A E 10A ANUIDADES.

B08H Application fees: decision cancelled [chapter 8.8 patent gazette]
B08F Application fees: application dismissed [chapter 8.6 patent gazette]

Free format text: REFERENTE A 9,10A E 11A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO PUBLICADO NA RPI 1942 DE 25/03/2008.