SE8501861D0 - Digitalradiokommunikationssystem som anvender sig av kvadraturmodulerade bervagor - Google Patents

Digitalradiokommunikationssystem som anvender sig av kvadraturmodulerade bervagor

Info

Publication number
SE8501861D0
SE8501861D0 SE8501861A SE8501861A SE8501861D0 SE 8501861 D0 SE8501861 D0 SE 8501861D0 SE 8501861 A SE8501861 A SE 8501861A SE 8501861 A SE8501861 A SE 8501861A SE 8501861 D0 SE8501861 D0 SE 8501861D0
Authority
SE
Sweden
Prior art keywords
quadrature modulated
bervagor
communication system
radio communication
digital radio
Prior art date
Application number
SE8501861A
Other languages
English (en)
Other versions
SE8501861L (sv
SE460326B (sv
Inventor
Y Akaiwa
Y Nagata
Y Matsuo
Original Assignee
Nec 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
Priority claimed from JP7678884A external-priority patent/JPH088593B2/ja
Priority claimed from JP5753384U external-priority patent/JPS60169963U/ja
Priority claimed from JP5753484U external-priority patent/JPS60169962U/ja
Application filed by Nec Corp filed Critical Nec Corp
Publication of SE8501861D0 publication Critical patent/SE8501861D0/sv
Publication of SE8501861L publication Critical patent/SE8501861L/sv
Publication of SE460326B publication Critical patent/SE460326B/sv

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
    • 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
    • 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
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
    • H04L27/2334—Demodulator circuits; Receiver circuits using non-coherent demodulation using filters

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transceivers (AREA)
  • Circuits Of Receivers In General (AREA)
SE8501861A 1984-04-17 1985-04-16 Digitalradiokommunikationssystem som anvaender sig av kvadraturmodulerade baervaagor SE460326B (sv)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP7678884A JPH088593B2 (ja) 1984-04-17 1984-04-17 デイジタル変調波用復調回路
JP5753384U JPS60169963U (ja) 1984-04-19 1984-04-19 デイジタル信号伝送用送信機
JP5753484U JPS60169962U (ja) 1984-04-19 1984-04-19 デイジタル信号伝送用送受信機

Publications (3)

Publication Number Publication Date
SE8501861D0 true SE8501861D0 (sv) 1985-04-16
SE8501861L SE8501861L (sv) 1985-10-18
SE460326B SE460326B (sv) 1989-09-25

Family

ID=27296294

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8501861A SE460326B (sv) 1984-04-17 1985-04-16 Digitalradiokommunikationssystem som anvaender sig av kvadraturmodulerade baervaagor

Country Status (6)

Country Link
US (1) US4817116A (sv)
AU (1) AU589119B2 (sv)
CA (1) CA1236168A (sv)
FI (1) FI80175C (sv)
NO (1) NO169269C (sv)
SE (1) SE460326B (sv)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5090026A (en) * 1989-09-11 1992-02-18 Electrocom Automation, Inc. Gmsk narrowband modem
JPH06291790A (ja) * 1993-04-05 1994-10-18 Matsushita Electric Ind Co Ltd π／４シフトＱＰＳＫ変調器
US5600676A (en) * 1993-07-06 1997-02-04 Ericsson Ge Mobile Communications Inc. Modulation scheme with low envelope variation for mobile radio by constraining a maximum modulus of a differential phase angle
US5642384A (en) * 1993-07-06 1997-06-24 Ericsson Inc. Trellis coded modulation scheme with low envelope variation for mobile radio by constraining a maximum modulus of a differential phase angle
US5588022A (en) * 1994-03-07 1996-12-24 Xetron Corp. Method and apparatus for AM compatible digital broadcasting
US5675590A (en) 1994-11-23 1997-10-07 At&T Wireless Services, Inc. Cyclic trellis coded modulation
US6889356B1 (en) * 1994-11-23 2005-05-03 Cingular Wireless Ii, Llc Cyclic trellis coded modulation
US5659578A (en) * 1994-11-23 1997-08-19 At&T Wireless Services, Inc. High rate Reed-Solomon concatenated trellis coded 16 star QAM system for transmission of data over cellular mobile radio
US5812604A (en) * 1996-07-16 1998-09-22 Scientific-Atlanta, Inc. Constant envelope continuous phase frequency shift key modulation apparatus and method at radio frequencies
US6002298A (en) * 1998-06-11 1999-12-14 The United States Of America As Represented By The Secretary Of The Air Force Reconstituted frequency modulation with feedforward demodulator
US6295317B1 (en) * 1998-10-02 2001-09-25 Usa Digital Radio Partners, Lp Method and apparatus for demodulating and equalizing an AM compatible digital audio broadcast signal
US6292511B1 (en) * 1998-10-02 2001-09-18 Usa Digital Radio Partners, Lp Method for equalization of complementary carriers in an AM compatible digital audio broadcast system
US6259893B1 (en) * 1998-11-03 2001-07-10 Ibiquity Digital Corporation Method and apparatus for reduction of FM interference for FM in-band on-channel digital audio broadcasting system
US6721337B1 (en) 1999-08-24 2004-04-13 Ibiquity Digital Corporation Method and apparatus for transmission and reception of compressed audio frames with prioritized messages for digital audio broadcasting
US6549544B1 (en) * 1999-11-10 2003-04-15 Ibiquity Digital Corporation Method and apparatus for transmission and reception of FM in-band on-channel digital audio broadcasting
US6523147B1 (en) 1999-11-11 2003-02-18 Ibiquity Digital Corporation Method and apparatus for forward error correction coding for an AM in-band on-channel digital audio broadcasting system
WO2002073918A1 (en) * 2001-03-12 2002-09-19 Telefonaktiebolaget Lm Ericsson (Publ) Dpsk scheme with adaptive transition angle range
JP3705271B2 (ja) * 2003-02-03 2005-10-12 ソニー株式会社 送信方法及び送信装置
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
US7327803B2 (en) 2004-10-22 2008-02-05 Parkervision, Inc. Systems and methods for vector power amplification
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
US9106316B2 (en) 2005-10-24 2015-08-11 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification
US8334722B2 (en) 2007-06-28 2012-12-18 Parkervision, Inc. Systems and methods of RF power transmission, modulation and amplification
US7911272B2 (en) 2007-06-19 2011-03-22 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including blended control embodiments
US8013675B2 (en) 2007-06-19 2011-09-06 Parkervision, Inc. Combiner-less multiple input single output (MISO) amplification with blended control
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
KR100841433B1 (ko) * 2006-06-19 2008-06-25 삼성전자주식회사 Ｄａｔ가 장착된 ｂｐｓｋ 변조방식을 적용한 폴라 송신기
WO2008144017A1 (en) 2007-05-18 2008-11-27 Parkervision, Inc. Systems and methods of rf power transmission, modulation, and amplification
RU2451407C1 (ru) * 2010-09-13 2012-05-20 Открытое акционерное общество "Российский институт мощного радиостроения" Способ определения вероятности ошибки на бит по параллельным многочастотным информационным сигналам
EP2695294A1 (en) 2011-04-08 2014-02-12 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
EP3047348A4 (en) 2013-09-17 2016-09-07 Parkervision Inc METHOD, DEVICE AND SYSTEM FOR THE PRESENTATION OF A MEDIA TIME FUNCTION

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3349371A (en) * 1963-11-20 1967-10-24 Sangamo Electric Co Quaternary decision logic
US3882425A (en) * 1973-08-27 1975-05-06 Boeing Co Linear microwave modulator
US3845412A (en) * 1973-10-12 1974-10-29 Microwave Ass Inc Digital modulate/demodulate system
US4057759A (en) * 1976-06-23 1977-11-08 Gte Sylvania Incorporated Communication receiving apparatus
JPS5650652A (en) * 1979-07-31 1981-05-07 Nec Corp Digital signal transmission system via multiphase/ multivalue modulation wave
US4528526A (en) * 1983-05-31 1985-07-09 Motorola, Inc. PSK modulator with noncollapsable output for use with a PLL power amplifier

Also Published As

Publication number Publication date
NO851489L (no) 1985-10-18
FI80175B (fi) 1989-12-29
NO169269C (no) 1992-05-27
SE8501861L (sv) 1985-10-18
SE460326B (sv) 1989-09-25
AU589119B2 (en) 1989-10-05
FI851513A0 (fi) 1985-04-16
CA1236168A (en) 1988-05-03
US4817116A (en) 1989-03-28
FI851513L (fi) 1985-10-18
AU4107485A (en) 1985-10-24
FI80175C (sv) 1990-04-10
NO169269B (no) 1992-02-17

Similar Documents

Publication Publication Date Title
SE8501861D0 (sv) Digitalradiokommunikationssystem som anvender sig av kvadraturmodulerade bervagor
GB2215567B (en) Improvements in or relating to equalisers
GB1324189A (en) Data demodulator employing comparison
DE69531482D1 (de) Gleichzeitige demodulation und dekodierung eines digital modulierten funksignals
DE69326140T2 (de) Psk empfänger
EP0282298A3 (en) Method and apparatus for combining encoding and modulation
DE60214834D1 (de) QAM mit quantisierter Leistung
EP0143539A3 (en) Digital demodulator arrangement for quadrature signals
GB1503610A (en) Digital data transmission system
GB1036316A (en) Improvements in or relating to data transmission systems
GB1230046A (sv)
GB1535892A (en) Repeater for receiving and transmitting data signals
ES8100581A2 (es) Perfeccionamientos en sistemas para la reception de senales de mensaje digitales de frecuencia modulada
CA2025827A1 (en) Carrier lock detector for a qam system
GR3023821T3 (en) Power line communication system
US5526381A (en) Robust non-coherent detector for π/4-DQPSK signals
GB2001218A (en) Improvements in phase shift keyed systems
GB1243152A (en) Improvements in or relating to interference detectors for data transmission systems
GB1392546A (en) Binary data communication apparatus
CN204168324U (zh) 一种fsk无线数据传输系统
GB991764A (en) Improvements in or relating to electrical signalling systems
GB1281169A (en) Improvements in or relating to phase modulation transmission systems
GB1104436A (en) Angle-modulated signal receiving systems
JPS5624851A (en) Digital frequency modulating communication system
AHMED Direct bit detection receiver noise performance analysis for 32-PSK and 64-PSK modulated signals(M. S. Thesis)

Legal Events

Date Code Title Description
NAL Patent in force

Ref document number: 8501861-2

Format of ref document f/p: F

NUG Patent has lapsed