WO2000070749A8 - Broadcast transmission system with distributed correction - Google Patents

Broadcast transmission system with distributed correction Download PDF

Info

Publication number
WO2000070749A8
WO2000070749A8 PCT/US2000/013008 US0013008W WO0070749A8 WO 2000070749 A8 WO2000070749 A8 WO 2000070749A8 US 0013008 W US0013008 W US 0013008W WO 0070749 A8 WO0070749 A8 WO 0070749A8
Authority
WO
WIPO (PCT)
Prior art keywords
group
components
information signal
distortion
transmission system
Prior art date
Application number
PCT/US2000/013008
Other languages
French (fr)
Other versions
WO2000070749A1 (en
Inventor
Edwin Ray Twitchell
Robert Plonka
Original Assignee
Harris 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 Harris Corp filed Critical Harris Corp
Priority to JP2000619091A priority Critical patent/JP4723726B2/en
Priority to AU48427/00A priority patent/AU4842700A/en
Priority to EP00930639A priority patent/EP1181771B1/en
Priority to DE60006102T priority patent/DE60006102T2/en
Priority to CA002373778A priority patent/CA2373778A1/en
Priority to AT00930639T priority patent/ATE252783T1/en
Publication of WO2000070749A1 publication Critical patent/WO2000070749A1/en
Publication of WO2000070749A8 publication Critical patent/WO2000070749A8/en
Priority to HK02107875.3A priority patent/HK1046336A1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/015—High-definition television 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
    • 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
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
    • H03F1/3247—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits using feedback acting on predistortion circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/57—Separate feedback of real and complex signals being present
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2201/00—Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by H03F1/00
    • H03F2201/32—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion
    • H03F2201/3233—Adaptive predistortion using lookup table, e.g. memory, RAM, ROM, LUT, to generate the predistortion

Abstract

A transmission system (14) broadcasts an information signal. Within the system (14), several components (e.g., 20-24) cause distortion to the information signal as the signal is processed and proceeds toward a broadcast antenna. The group of distortion causing components (20-24) is identified as a first group, and is arranged in a sequence along a signal path (12) toward the antenna. The first group of components (20-24) performs various functions, including amplification, but each subjects the information signal to distortion shifts away from intended values. A second group of components (e.g., 28-32) modifies the information signal to compensate for the distortion shifts imposed by the first group of components (20-24). The second group of components (28-32) is located upstream of the first group of components (20-24). The second group of components (28-32) is arranged in a sequence to modify the information signal to compensate for the distortions in an order inverse to the occurrence of the distortions.
PCT/US2000/013008 1999-05-14 2000-05-12 Broadcast transmission system with distributed correction WO2000070749A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP2000619091A JP4723726B2 (en) 1999-05-14 2000-05-12 Distribution correction broadcast transmission system
AU48427/00A AU4842700A (en) 1999-05-14 2000-05-12 Broadcast transmission system with distributed correction
EP00930639A EP1181771B1 (en) 1999-05-14 2000-05-12 Broadcast transmission system with distributed correction
DE60006102T DE60006102T2 (en) 1999-05-14 2000-05-12 BROADCASTING TRANSMISSION SYSTEM WITH DISTRIBUTED CORRECTION
CA002373778A CA2373778A1 (en) 1999-05-14 2000-05-12 Broadcast transmission system with distributed correction
AT00930639T ATE252783T1 (en) 1999-05-14 2000-05-12 DISTRIBUTED CORRECTION BROADCAST TRANSMISSION SYSTEM
HK02107875.3A HK1046336A1 (en) 1999-05-14 2002-10-30 Broadcast transmission system with distributed correction

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/312,354 1999-05-14
US09/312,354 US6335767B1 (en) 1998-06-26 1999-05-14 Broadcast transmission system with distributed correction

Publications (2)

Publication Number Publication Date
WO2000070749A1 WO2000070749A1 (en) 2000-11-23
WO2000070749A8 true WO2000070749A8 (en) 2001-05-03

Family

ID=23211079

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/013008 WO2000070749A1 (en) 1999-05-14 2000-05-12 Broadcast transmission system with distributed correction

Country Status (12)

Country Link
US (1) US6335767B1 (en)
EP (1) EP1181771B1 (en)
JP (1) JP4723726B2 (en)
KR (1) KR100635518B1 (en)
CN (1) CN1211917C (en)
AT (1) ATE252783T1 (en)
AU (1) AU4842700A (en)
CA (1) CA2373778A1 (en)
DE (1) DE60006102T2 (en)
HK (1) HK1046336A1 (en)
TW (1) TW484320B (en)
WO (1) WO2000070749A1 (en)

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US6639537B1 (en) * 2000-03-31 2003-10-28 Massachusetts Institute Of Technology Highly linear analog-to-digital conversion system and method thereof
US6600516B1 (en) * 2000-04-21 2003-07-29 Harris Corporation Digital RF transmitter system employing both digital pre-correction and analog pre-correction
KR100448115B1 (en) * 2000-11-30 2004-09-10 현대자동차주식회사 A polyamide resin composition
KR100360273B1 (en) * 2000-12-28 2002-11-09 엘지전자 주식회사 Linear compensation adaptive equalizer apparatus and his controll method for digital television repeater
CA2383717A1 (en) * 2001-06-28 2002-12-28 Telecommunications Research Laboratories An optical fiber based on wireless scheme for wideband multimedia access
US20030058959A1 (en) * 2001-09-25 2003-03-27 Caly Networks. Combined digital adaptive pre-distorter and pre-equalizer system for modems in link hopping radio networks
US20030063663A1 (en) * 2001-10-01 2003-04-03 Bryant Paul Henry Multistage equalizer that corrects for linear and nonlinear distortion in a digitally-modulated signal
US6801086B1 (en) * 2002-04-03 2004-10-05 Andrew Corporation Adaptive digital pre-distortion using amplifier model that incorporates frequency-dependent non-linearities
US7991071B2 (en) * 2002-05-16 2011-08-02 Rf Micro Devices, Inc. AM to PM correction system for polar modulator
US7801244B2 (en) * 2002-05-16 2010-09-21 Rf Micro Devices, Inc. Am to AM correction system for polar modulator
JP2004040564A (en) * 2002-07-04 2004-02-05 Fujitsu Ltd Distortion compensation method for power amplifier and unit using the same
JP4063612B2 (en) * 2002-08-26 2008-03-19 株式会社エヌ・ティ・ティ・ドコモ Transmitter
KR20050070044A (en) * 2002-10-08 2005-07-05 엠/에이-컴, 인크. Apparatus, methods and articles of manufacture for pre-emphasis filtering of a modulated signal
US7340007B2 (en) * 2003-09-16 2008-03-04 M/A-Com, Inc. Apparatus, methods and articles of manufacture for pre-emphasis filtering of a modulated signal
US6816008B2 (en) * 2002-12-31 2004-11-09 Alion Science And Technology Corporation Quasi-linear multi-state digital modulation through non-linear amplifier arrays
KR100540171B1 (en) * 2003-05-20 2006-01-10 한국전자통신연구원 Apparatus and Method of On-channel Repeater for ATSC Terrestrial Digital TV Broadcasting Service
US7027780B2 (en) * 2003-09-30 2006-04-11 Broadcom Corporation Technique for improving modulation performance of translational loop RF transmitters
US7313208B2 (en) * 2003-11-03 2007-12-25 Zenith Electronics Corporation Pre-equalization for low-cost DTV translators
US7099399B2 (en) * 2004-01-27 2006-08-29 Crestcom, Inc. Distortion-managed digital RF communications transmitter and method therefor
US7469491B2 (en) 2004-01-27 2008-12-30 Crestcom, Inc. Transmitter predistortion circuit and method therefor
US7430248B2 (en) * 2004-01-27 2008-09-30 Crestcom, Inc. Predistortion circuit and method for compensating nonlinear distortion in a digital RF communications transmitter
EP1709729A4 (en) * 2004-01-27 2006-12-27 Crestcom Inc Transmitter predistortion circuit and method therefor
US7551686B1 (en) 2004-06-23 2009-06-23 Rf Micro Devices, Inc. Multiple polynomial digital predistortion
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EP1662655A1 (en) * 2004-11-26 2006-05-31 Alcatel Power amplifier with digital linearisation device
DE102005020318B4 (en) 2005-05-02 2007-02-22 Infineon Technologies Ag Method for determining a model for an electrical network and use of the method
US8224265B1 (en) 2005-06-13 2012-07-17 Rf Micro Devices, Inc. Method for optimizing AM/AM and AM/PM predistortion in a mobile terminal
US7877060B1 (en) 2006-02-06 2011-01-25 Rf Micro Devices, Inc. Fast calibration of AM/PM pre-distortion
ATE397325T1 (en) * 2006-02-06 2008-06-15 Alcatel Lucent MODULAR MULTI-BAND, MULTI-STANDARD TRANSCEIVER CIRCUIT FOR MOBILE AND BASE STATIONS OF RADIO COMMUNICATION SYSTEMS
US7962108B1 (en) 2006-03-29 2011-06-14 Rf Micro Devices, Inc. Adaptive AM/PM compensation
US7782978B2 (en) * 2006-04-13 2010-08-24 Harris Corporation Phase correction of a constant envelope signal without introducing amplitude modulation
US7606539B2 (en) * 2006-08-07 2009-10-20 Infineon Technologies Ag Adaptive predistorter coupled to a nonlinear element
US7689182B1 (en) 2006-10-12 2010-03-30 Rf Micro Devices, Inc. Temperature compensated bias for AM/PM improvement
US7724840B2 (en) * 2006-12-19 2010-05-25 Crestcom, Inc. RF transmitter with predistortion and method therefor
US8009762B1 (en) 2007-04-17 2011-08-30 Rf Micro Devices, Inc. Method for calibrating a phase distortion compensated polar modulated radio frequency transmitter
US20080285640A1 (en) * 2007-05-15 2008-11-20 Crestcom, Inc. RF Transmitter With Nonlinear Predistortion and Method Therefor
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JP5105309B2 (en) 2008-07-15 2012-12-26 日本電気株式会社 Power amplifier, non-linear distortion correction method for power amplifier, and wireless communication apparatus
US8195118B2 (en) 2008-07-15 2012-06-05 Linear Signal, Inc. Apparatus, system, and method for integrated phase shifting and amplitude control of phased array signals
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Also Published As

Publication number Publication date
JP4723726B2 (en) 2011-07-13
JP2003500875A (en) 2003-01-07
EP1181771B1 (en) 2003-10-22
DE60006102D1 (en) 2003-11-27
CA2373778A1 (en) 2000-11-23
WO2000070749A1 (en) 2000-11-23
AU4842700A (en) 2000-12-05
TW484320B (en) 2002-04-21
KR20020095021A (en) 2002-12-20
HK1046336A1 (en) 2003-01-03
US6335767B1 (en) 2002-01-01
KR100635518B1 (en) 2006-10-18
CN1355954A (en) 2002-06-26
DE60006102T2 (en) 2004-07-08
EP1181771A1 (en) 2002-02-27
ATE252783T1 (en) 2003-11-15
CN1211917C (en) 2005-07-20

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