DE69939084D1 - Zellulares CDMA Nachrichtenübertragungssystem und Verfahren zum Detektieren eines Spreizkodes - Google Patents

Zellulares CDMA Nachrichtenübertragungssystem und Verfahren zum Detektieren eines Spreizkodes

Info

Publication number
DE69939084D1
DE69939084D1 DE69939084T DE69939084T DE69939084D1 DE 69939084 D1 DE69939084 D1 DE 69939084D1 DE 69939084 T DE69939084 T DE 69939084T DE 69939084 T DE69939084 T DE 69939084T DE 69939084 D1 DE69939084 D1 DE 69939084D1
Authority
DE
Germany
Prior art keywords
detecting
transmission system
message transmission
spreading code
cellular cdma
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 - Fee Related
Application number
DE69939084T
Other languages
English (en)
Inventor
Toshifumi Sato
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
Application granted granted Critical
Publication of DE69939084D1 publication Critical patent/DE69939084D1/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/10—Code generation
    • 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
    • H04B1/7077—Multi-step acquisition, e.g. multi-dwell, coarse-fine or validation
    • 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
    • H04B1/709—Correlator structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2628—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]
    • 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
    • H04B1/7083—Cell search, e.g. using a three-step approach
    • 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
    • H04B2201/70702—Intercell-related aspects

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
DE69939084T 1998-05-01 1999-04-29 Zellulares CDMA Nachrichtenübertragungssystem und Verfahren zum Detektieren eines Spreizkodes Expired - Fee Related DE69939084D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12231898A JP3028800B2 (ja) 1998-05-01 1998-05-01 Ｃｄｍａセルラシステム及びｃｄｍａセルラシステムにおける拡散符号検出方法

Publications (1)

Publication Number Publication Date
DE69939084D1 true DE69939084D1 (de) 2008-08-28

Family

ID=14833000

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69939084T Expired - Fee Related DE69939084D1 (de) 1998-05-01 1999-04-29 Zellulares CDMA Nachrichtenübertragungssystem und Verfahren zum Detektieren eines Spreizkodes

Country Status (5)

Country Link
US (1) US6574205B1 (de)
EP (1) EP0954124B1 (de)
JP (1) JP3028800B2 (de)
KR (1) KR100376356B1 (de)
DE (1) DE69939084D1 (de)

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US7227884B2 (en) * 2000-02-28 2007-06-05 Aeroastro, Inc. Spread-spectrum receiver with progressive fourier transform
US6985512B1 (en) * 2000-02-28 2006-01-10 Aeroastro, Inc. Asynchronous spread-spectrum communications
US7433391B2 (en) * 2000-02-28 2008-10-07 Aeroastro, Inc. Spread-spectrum receiver with fast M-sequence transform
JP3730842B2 (ja) * 2000-08-02 2006-01-05 日本電気株式会社 Ｃｄｍａ受信装置及びその方法
US7110782B2 (en) * 2001-10-30 2006-09-19 Texas Instruments Incorporated Cell search synchronization
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US7286846B2 (en) * 2003-02-18 2007-10-23 Qualcomm, Incorporated Systems and methods for performing outer loop power control in wireless communication systems
US7155236B2 (en) 2003-02-18 2006-12-26 Qualcomm Incorporated Scheduled and autonomous transmission and acknowledgement
US8023950B2 (en) 2003-02-18 2011-09-20 Qualcomm Incorporated Systems and methods for using selectable frame durations in a wireless communication system
US7660282B2 (en) 2003-02-18 2010-02-09 Qualcomm Incorporated Congestion control in a wireless data network
US8391249B2 (en) 2003-02-18 2013-03-05 Qualcomm Incorporated Code division multiplexing commands on a code division multiplexed channel
US8081598B2 (en) 2003-02-18 2011-12-20 Qualcomm Incorporated Outer-loop power control for wireless communication systems
US8150407B2 (en) * 2003-02-18 2012-04-03 Qualcomm Incorporated System and method for scheduling transmissions in a wireless communication system
US20040160922A1 (en) 2003-02-18 2004-08-19 Sanjiv Nanda Method and apparatus for controlling data rate of a reverse link in a communication system
US8705588B2 (en) * 2003-03-06 2014-04-22 Qualcomm Incorporated Systems and methods for using code space in spread-spectrum communications
US7215930B2 (en) 2003-03-06 2007-05-08 Qualcomm, Incorporated Method and apparatus for providing uplink signal-to-noise ratio (SNR) estimation in a wireless communication
US8477592B2 (en) 2003-05-14 2013-07-02 Qualcomm Incorporated Interference and noise estimation in an OFDM system
US8489949B2 (en) 2003-08-05 2013-07-16 Qualcomm Incorporated Combining grant, acknowledgement, and rate control commands
US8068530B2 (en) * 2004-06-18 2011-11-29 Qualcomm Incorporated Signal acquisition in a wireless communication system
JP4701840B2 (ja) * 2005-06-01 2011-06-15 日本電気株式会社 スペクトラム拡散通信システム及びそれに用いる復調回路
WO2006137021A1 (en) * 2005-06-23 2006-12-28 Koninklijke Philips Electronics N.V. An inductive communication system with increased noise immunity using a low-complexity transmitter
WO2007136415A2 (en) * 2005-12-30 2007-11-29 Comtech Mobile Datacom Corporation Mobile satellite communications
US8738056B2 (en) * 2006-05-22 2014-05-27 Qualcomm Incorporation Signal acquisition in a wireless communication system
US8929353B2 (en) 2007-05-09 2015-01-06 Qualcomm Incorporated Preamble structure and acquisition for a wireless communication system
BRPI0712926B1 (pt) * 2006-06-13 2019-11-12 Qualcomm Inc estrutura de preâmbulo e aquisição para um sistema de comunicação sem fio
US8275080B2 (en) 2006-11-17 2012-09-25 Comtech Mobile Datacom Corporation Self-supporting simplex packets
US8284749B2 (en) * 2008-03-10 2012-10-09 Comtech Mobile Datacom Corporation Time slot synchronized, flexible bandwidth communication system
US8699544B2 (en) 2008-05-02 2014-04-15 Futurewei Technologies, Inc. System and method for wireless communications
US8548107B1 (en) 2009-01-26 2013-10-01 Comtech Mobile Datacom Corporation Advanced multi-user detector
US9106364B1 (en) 2009-01-26 2015-08-11 Comtech Mobile Datacom Corporation Signal processing of a high capacity waveform
US8675711B1 (en) 2009-09-25 2014-03-18 Comtech Mobile Datacom Corporation System and methods for dynamic spread spectrum usage

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JPS60177719A (ja) 1984-02-23 1985-09-11 Omron Tateisi Electronics Co ゴ−ルド符号発生器
US4969159A (en) * 1989-03-22 1990-11-06 Harris Corporation Spread spectrum communication system employing composite spreading codes with matched filter demodulator
US5103459B1 (en) * 1990-06-25 1999-07-06 Qualcomm Inc System and method for generating signal waveforms in a cdma cellular telephone system
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Also Published As

Publication number Publication date
EP0954124A3 (de) 2003-05-28
JPH11317692A (ja) 1999-11-16
KR100376356B1 (ko) 2003-03-17
JP3028800B2 (ja) 2000-04-04
KR19990087984A (ko) 1999-12-27
EP0954124B1 (de) 2008-07-16
US6574205B1 (en) 2003-06-03
EP0954124A2 (de) 1999-11-03

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee