CN1150694C - 包括窄带宽信号的过采样和直流偏移补偿的调制系统与方法 - Google Patents

包括窄带宽信号的过采样和直流偏移补偿的调制系统与方法 Download PDF

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Publication number
CN1150694C
CN1150694C CNB988131668A CN98813166A CN1150694C CN 1150694 C CN1150694 C CN 1150694C CN B988131668 A CNB988131668 A CN B988131668A CN 98813166 A CN98813166 A CN 98813166A CN 1150694 C CN1150694 C CN 1150694C
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CN
China
Prior art keywords
signal
digital
analog
direct current
current offset
Prior art date
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Expired - Fee Related
Application number
CNB988131668A
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English (en)
Chinese (zh)
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CN1286834A (zh
Inventor
Rd
R·D·贝施
���ɶ��ؼ�����
D·阿派尔
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Ericsson Inc
Original Assignee
Ericsson Inc
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Filing date
Publication date
Priority claimed from US08/971,502 external-priority patent/US6137826A/en
Priority claimed from US09/151,622 external-priority patent/US6100827A/en
Application filed by Ericsson Inc filed Critical Ericsson Inc
Publication of CN1286834A publication Critical patent/CN1286834A/zh
Application granted granted Critical
Publication of CN1150694C publication Critical patent/CN1150694C/zh
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • 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
    • H04B1/7097—Interference-related aspects
    • H04B1/71—Interference-related aspects the interference being narrowband interference
    • H04B1/7101—Interference-related aspects the interference being narrowband interference with estimation filters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/487—Arrangements for providing information services, e.g. recorded voice services or time announcements
    • H04M3/493—Interactive information services, e.g. directory enquiries ; Arrangements therefor, e.g. interactive voice response [IVR] systems or voice portals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/38—Angle modulation by converting amplitude modulation to angle modulation
    • H03C3/40—Angle modulation by converting amplitude modulation to angle modulation using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated
    • 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
    • H04L27/206—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 using a pair of orthogonal carriers, e.g. quadrature carriers
    • H04L27/2067—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 using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states
    • H04L27/2071—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 using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states in which the data are represented by the carrier phase, e.g. systems with differential coding
    • 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
    • H04B2201/7097—Direct sequence modulation interference
    • H04B2201/709709—Methods of preventing interference
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Analogue/Digital Conversion (AREA)
  • Transmitters (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Mobile Radio Communication Systems (AREA)
CNB988131668A 1997-11-17 1998-11-05 包括窄带宽信号的过采样和直流偏移补偿的调制系统与方法 Expired - Fee Related CN1150694C (zh)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US08/971,502 1997-11-17
US08/971,502 US6137826A (en) 1997-11-17 1997-11-17 Dual-mode modulation systems and methods including oversampling of narrow bandwidth signals
US09/151,996 US6535561B2 (en) 1997-11-17 1998-09-11 Dual-mode modulation systems and methods including oversampling of narrow bandwidth signals and DC offset compensation
US09/151,622 US6100827A (en) 1998-09-11 1998-09-11 Modulation systems and methods that compensate for DC offset introduced by the digital-to-analog converter and/or the low pass filter thereof
US09/151,622 1998-09-11
US09/151,996 1998-09-11

Publications (2)

Publication Number Publication Date
CN1286834A CN1286834A (zh) 2001-03-07
CN1150694C true CN1150694C (zh) 2004-05-19

Family

ID=27387152

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB988131668A Expired - Fee Related CN1150694C (zh) 1997-11-17 1998-11-05 包括窄带宽信号的过采样和直流偏移补偿的调制系统与方法

Country Status (8)

Country Link
JP (1) JP2002542633A (fr)
CN (1) CN1150694C (fr)
AU (1) AU1382199A (fr)
BR (1) BR9814200A (fr)
CA (1) CA2310220A1 (fr)
FI (1) FI20001178A (fr)
HK (1) HK1035454A1 (fr)
WO (1) WO1999026361A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100444517C (zh) * 2004-10-19 2008-12-17 联发科技股份有限公司 直流偏移校正装置

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020051301A (ko) * 2000-12-22 2002-06-28 오길록 직류전원 오프셋이 제어된 디지털 직교 복조 장치
DE10136741A1 (de) * 2001-07-27 2002-10-31 Infineon Technologies Ag Schaltungsanordnung zur Regelung eines Signal-Gleichanteils und Mobilfunksender
US7349680B2 (en) * 2002-04-29 2008-03-25 Broadcom Corporation Method and system for using PSK sync word for fine tuning frequency adjustment
US7231193B2 (en) * 2004-04-13 2007-06-12 Skyworks Solutions, Inc. Direct current offset correction systems and methods
JP4628881B2 (ja) * 2005-06-15 2011-02-09 ルネサスエレクトロニクス株式会社 可変利得増幅回路及びそのｄｃオフセット補正方法並びに無線受信装置
US7391196B2 (en) * 2005-09-30 2008-06-24 Silicon Laboratories Inc. In system analysis and compensation for a digital PWM controller
US8279180B2 (en) * 2006-05-02 2012-10-02 Apple Inc. Multipoint touch surface controller
WO2008026760A1 (fr) * 2006-09-01 2008-03-06 Panasonic Corporation Procede et dispositif de communication radio
JP5190233B2 (ja) 2006-09-01 2013-04-24 パナソニック株式会社 無線通信装置
JP4875767B2 (ja) * 2008-04-28 2012-02-15 パナソニック株式会社 積分器、共振器及びオーバーサンプリングａ／ｄ変換器
CN101286961B (zh) * 2008-05-26 2012-04-18 华为技术有限公司 对设备输出的直流偏移进行校准的装置和方法
JP5275196B2 (ja) * 2009-09-29 2013-08-28 パナソニック株式会社 積分器およびそれを備えたオーバーサンプリングａ／ｄ変換器
CN103941069A (zh) * 2013-12-30 2014-07-23 上海大郡动力控制技术有限公司 一种交流电流采样过程中直流偏置电压去除方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2636183B1 (fr) * 1988-08-12 1990-10-12 Thiriet Jean Yves Filtre numerique a debit variable pour modulateur de phase
US5248970A (en) * 1991-11-08 1993-09-28 Crystal Semiconductor Corp. Offset calibration of a dac using a calibrated adc
FI96811C (fi) * 1993-11-30 1996-08-26 Nokia Mobile Phones Ltd Menetelmä ja piirijärjestely D/A-muuntimen DC-erojännitteen kompensoimiseksi
TW294867B (fr) * 1994-12-23 1997-01-01 Qualcomm Inc

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100444517C (zh) * 2004-10-19 2008-12-17 联发科技股份有限公司 直流偏移校正装置

Also Published As

Publication number Publication date
WO1999026361A1 (fr) 1999-05-27
HK1035454A1 (en) 2001-11-23
JP2002542633A (ja) 2002-12-10
CA2310220A1 (fr) 1999-05-27
CN1286834A (zh) 2001-03-07
AU1382199A (en) 1999-06-07
FI20001178A (fi) 2000-05-16
BR9814200A (pt) 2000-09-26

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