DE69521671D1 - Spreizspektrumdifferenzmodulation - Google Patents

Spreizspektrumdifferenzmodulation

Info

Publication number
DE69521671D1
DE69521671D1 DE69521671T DE69521671T DE69521671D1 DE 69521671 D1 DE69521671 D1 DE 69521671D1 DE 69521671 T DE69521671 T DE 69521671T DE 69521671 T DE69521671 T DE 69521671T DE 69521671 D1 DE69521671 D1 DE 69521671D1
Authority
DE
Germany
Prior art keywords
spread spectrum
spectrum difference
difference modulation
modulation
spread
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
DE69521671T
Other languages
English (en)
Other versions
DE69521671T2 (de
Inventor
Roy Alain Le
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Application granted granted Critical
Publication of DE69521671D1 publication Critical patent/DE69521671D1/de
Publication of DE69521671T2 publication Critical patent/DE69521671T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/16—Code allocation
    • H04J13/18—Allocation of orthogonal codes
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/0022—PN, e.g. Kronecker

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
DE69521671T 1994-12-19 1995-12-14 Spreizspektrumdifferenzmodulation Expired - Lifetime DE69521671T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9415241A FR2728415B1 (fr) 1994-12-19 1994-12-19 Procede de transmission a modulation et demodulation differentielle de phase a etalement de spectre utilisant des sequences pseudoaleatoires orthogonales

Publications (2)

Publication Number Publication Date
DE69521671D1 true DE69521671D1 (de) 2001-08-16
DE69521671T2 DE69521671T2 (de) 2002-04-25

Family

ID=9469920

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69521671T Expired - Lifetime DE69521671T2 (de) 1994-12-19 1995-12-14 Spreizspektrumdifferenzmodulation

Country Status (5)

Country Link
US (1) US5822363A (de)
EP (1) EP0718983B1 (de)
CA (1) CA2165034A1 (de)
DE (1) DE69521671T2 (de)
FR (1) FR2728415B1 (de)

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JPH1022874A (ja) 1996-07-09 1998-01-23 Hitachi Ltd Ｃｄｍａ通信システムおよび通信方法
US6289041B1 (en) 1997-02-11 2001-09-11 Snaptrack, Inc. Fast Acquisition, high sensitivity GPS receiver
US6396880B1 (en) * 1998-04-17 2002-05-28 Analog Devices Inc π/4 DQPSK encoder and modulator
US6208291B1 (en) * 1998-05-29 2001-03-27 Snaptrack, Inc. Highly parallel GPS correlator system and method
US6567474B1 (en) * 1999-03-02 2003-05-20 Phonex Corporation Digital wireless phone/modem jack capable of communications over the power lines using differential binary phase shift keying (DBPSK)
GB9922239D0 (en) * 1999-09-20 1999-11-17 Nokia Mobile Phones Ltd A multiple access technique for mobile radio systems
FR2813474B1 (fr) * 2000-08-28 2002-12-13 Commissariat Energie Atomique Procede de reception non coherente dp-mok avec combinaison de trajets multiples et recepteur correspondant
JP4278332B2 (ja) * 2001-06-29 2009-06-10 日本電信電話株式会社 光送信器および光伝送システム
US7596190B2 (en) * 2002-04-01 2009-09-29 Qualcomm Incorporated System, method, and apparatus for correction of code doppler shift
US7301993B2 (en) * 2002-09-13 2007-11-27 Broadcom Corporation Channel estimation in a spread spectrum receiver
US7532682B1 (en) 2002-11-27 2009-05-12 Schell Stephan V Quadrature modulation without carrier
AU2003903271A0 (en) * 2003-06-26 2003-07-10 Commonwealth Scientific And Industrial Research Organisation A device and method for encoding or decoding a datum
CN1940589B (zh) * 2005-09-30 2010-04-21 凌阳科技股份有限公司 一种全球卫星定位系统的数据位同步的方法及系统
AU2009266425B2 (en) * 2008-07-04 2015-02-05 Commonwealth Scientific And Industrial Research Organisation Wireless localisation system
US9057606B2 (en) 2009-09-10 2015-06-16 Nextnav, Llc Wide area positioning system
US9035829B2 (en) 2008-09-10 2015-05-19 Nextnav, Llc Wide area positioning systems and methods
US8917209B2 (en) 2009-09-10 2014-12-23 Nextnav, Llc Coding in a wide area positioning system (WAPS)
CA2928283A1 (en) 2008-09-10 2010-03-18 Nextnav, Llc Wide area positioning system
US8229041B2 (en) * 2009-05-26 2012-07-24 Broadcom Corporation Direct detection of wireless interferers in a communication device for multiple modulation types
US8743848B2 (en) * 2009-05-26 2014-06-03 Broadcom Corporation Hybrid location determination for wireless communication device
US9291712B2 (en) 2009-09-10 2016-03-22 Nextnav, Llc Cell organization and transmission schemes in a wide area positioning system (WAPS)
US9372266B2 (en) 2009-09-10 2016-06-21 Nextnav, Llc Cell organization and transmission schemes in a wide area positioning system (WAPS)
US9645249B2 (en) 2011-06-28 2017-05-09 Nextnav, Llc Systems and methods for pseudo-random coding
CN107462901B (zh) * 2011-06-28 2021-01-12 内克斯特纳夫有限公司 用于从发射器网络发射定位信号的方法和系统
JP2014529058A (ja) * 2011-06-28 2014-10-30 ネクストナヴ，エルエルシー 広域測位システム（ｗａｐｓ）におけるコーディング
US9176217B2 (en) 2011-08-02 2015-11-03 Nextnav, Llc Cell organization and transmission schemes in a wide area positioning system (WAPS)
EP2856202B1 (de) 2012-06-05 2016-12-21 NextNav, LLC Systeme und verfahren zur standortbestimmung einer benutzervorrichtung
US9286490B2 (en) 2013-09-10 2016-03-15 Nextnav, Llc Systems and methods for providing conditional access to transmitted information
US9390279B2 (en) 2012-09-11 2016-07-12 Nextnav, Llc Systems and methods for providing conditional access to transmitted information
US11026608B2 (en) * 2017-01-09 2021-06-08 Vox Biomedical Llc Cerebral oximetry using time-gated direct sequence spread spectrum
CN112737619B (zh) * 2020-12-24 2022-05-13 重庆航天火箭电子技术有限公司 一种全开环pcm-dpsk-fm安控接收机设计方法
CN113141195B (zh) * 2021-04-06 2022-08-23 重庆邮电大学 一种在直扩系统解扩的解调方法及存储介质

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4253067A (en) * 1978-12-11 1981-02-24 Rockwell International Corporation Baseband differentially phase encoded radio signal detector
US4730340A (en) * 1980-10-31 1988-03-08 Harris Corp. Programmable time invariant coherent spread symbol correlator
US4443799A (en) * 1981-07-02 1984-04-17 Sperry Corporation Spread spectrum radar
GB2233860B (en) * 1989-07-13 1993-10-27 Stc Plc Communications systems
US5157686A (en) * 1990-05-24 1992-10-20 Cylink Corporation Method and apparatus for the modulation of spread spectrum radio signals
US5103459B1 (en) * 1990-06-25 1999-07-06 Qualcomm Inc System and method for generating signal waveforms in a cdma cellular telephone system
US5237587A (en) * 1992-11-20 1993-08-17 Magnavox Electronic Systems Company Pseudo-noise modem and related digital correlation method
US5353301A (en) * 1993-09-17 1994-10-04 Motorola, Inc. Method and apparatus for combining multipath spread-spectrum signals
JPH07170210A (ja) * 1993-12-16 1995-07-04 Nec Corp スペクトラム拡散変復調方法及びそれを用いた変調器・ 復調器
US5592506A (en) * 1994-10-17 1997-01-07 Cylink Corporation MSK spread-spectrum receiver which allows CDMA operations

Also Published As

Publication number Publication date
EP0718983A1 (de) 1996-06-26
US5822363A (en) 1998-10-13
FR2728415A1 (fr) 1996-06-21
DE69521671T2 (de) 2002-04-25
EP0718983B1 (de) 2001-07-11
FR2728415B1 (fr) 1997-01-24
CA2165034A1 (en) 1996-06-20

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition