DE69930036D1 - Rahmensynchronisierung mittels Erfassung der Konstellationsgrösse - Google Patents

Rahmensynchronisierung mittels Erfassung der Konstellationsgrösse

Info

Publication number
DE69930036D1
DE69930036D1 DE69930036T DE69930036T DE69930036D1 DE 69930036 D1 DE69930036 D1 DE 69930036D1 DE 69930036 T DE69930036 T DE 69930036T DE 69930036 T DE69930036 T DE 69930036T DE 69930036 D1 DE69930036 D1 DE 69930036D1
Authority
DE
Germany
Prior art keywords
detecting
frame synchronization
constellation size
constellation
size
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
DE69930036T
Other languages
English (en)
Other versions
DE69930036T2 (de
Inventor
Soichi Tsumura
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.)
NEC Corp
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
Application filed by NEC Corp filed Critical NEC Corp
Publication of DE69930036D1 publication Critical patent/DE69930036D1/de
Application granted granted Critical
Publication of DE69930036T2 publication Critical patent/DE69930036T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/70751—Synchronisation aspects with code phase acquisition using partial detection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/204—Multiple access
    • H04B7/216—Code division or spread-spectrum multiple access [CDMA, SSMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0602—Systems characterised by the synchronising information used
    • H04J3/0605—Special codes used as synchronising signal
    • H04J3/0608—Detectors therefor, e.g. correlators, state machines
    • 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
    • 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
    • H04B1/7073—Synchronisation aspects
    • H04B1/70735—Code identification
    • 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
    • H04B2201/70707—Efficiency-related aspects

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
DE1999630036 1998-09-30 1999-09-28 Rahmensynchronisierung mittels Erfassung der Konstellationsgrösse Expired - Lifetime DE69930036T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP27815298A JP2993500B1 (ja) 1998-09-30 1998-09-30 フレームタイミング同期方法
JP27815298 1998-09-30

Publications (2)

Publication Number Publication Date
DE69930036D1 true DE69930036D1 (de) 2006-04-27
DE69930036T2 DE69930036T2 (de) 2006-10-26

Family

ID=17593321

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1999630036 Expired - Lifetime DE69930036T2 (de) 1998-09-30 1999-09-28 Rahmensynchronisierung mittels Erfassung der Konstellationsgrösse

Country Status (5)

Country Link
US (1) US6754257B1 (de)
EP (1) EP0991235B1 (de)
JP (1) JP2993500B1 (de)
KR (1) KR100342628B1 (de)
DE (1) DE69930036T2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020075972A1 (en) * 2000-03-29 2002-06-20 Time Domain Corporation Apparatus, system and method for one-of-many positions modulation in an impulse radio communications system
KR100365617B1 (ko) * 2001-01-10 2002-12-26 삼성전자 주식회사 이동용 시분할 동기화 부호분할 다중접속 통신시스템의방송제어채널 위치 검출 장치 및 방법
DE10149544B4 (de) * 2001-10-08 2004-11-11 Rohde & Schwarz Gmbh & Co. Kg Verfahren zum Ermitteln des Zeitversatzes eines CDMA-Signals und Computerprogramm zur Durchführung des Verfahrens
KR100667785B1 (ko) * 2004-12-16 2007-01-12 삼성전자주식회사 카오스 기반 통신 시스템에서 동기화 방법 및 장치, 위치인식 방법 및 장치

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5440597A (en) 1993-11-23 1995-08-08 Nokia Mobile Phones Ltd. Double dwell maximum likelihood acquisition system with continuous decision making for CDMA and direct spread spectrum system
US5627855A (en) * 1995-05-25 1997-05-06 Golden Bridge Technology, Inc. Programmable two-part matched filter for spread spectrum
US5655003A (en) * 1995-09-18 1997-08-05 Lucent Technologies Inc. Wireless terminal having digital radio processing with automatic communication system selection capability
KR100221336B1 (ko) 1996-12-28 1999-09-15 전주범 직교 주파수 분할 다중화 수신 시스템의 프레임 동기 장치 및 그 방법
JPH1141141A (ja) * 1997-05-21 1999-02-12 Mitsubishi Electric Corp スペクトル拡散信号受信方法及びスペクトル拡散信号受信装置

Also Published As

Publication number Publication date
EP0991235B1 (de) 2006-03-01
US6754257B1 (en) 2004-06-22
JP2993500B1 (ja) 1999-12-20
EP0991235A2 (de) 2000-04-05
EP0991235A3 (de) 2003-08-13
KR100342628B1 (ko) 2002-06-28
DE69930036T2 (de) 2006-10-26
KR20000023506A (ko) 2000-04-25
JP2000115023A (ja) 2000-04-21

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition