CA2153516A1 - Mobile Station for CDMA Mobile Communication System and Detection Method of the Same - Google Patents

Mobile Station for CDMA Mobile Communication System and Detection Method of the Same

Info

Publication number
CA2153516A1
CA2153516A1 CA2153516A CA2153516A CA2153516A1 CA 2153516 A1 CA2153516 A1 CA 2153516A1 CA 2153516 A CA2153516 A CA 2153516A CA 2153516 A CA2153516 A CA 2153516A CA 2153516 A1 CA2153516 A1 CA 2153516A1
Authority
CA
Canada
Prior art keywords
signals
data signal
circuit
mobile station
despreading
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.)
Granted
Application number
CA2153516A
Other languages
French (fr)
Other versions
CA2153516C (en
Inventor
Yasuo Ohgoshi
Nobukazu Doi
Takashi Yano
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.)
Hitachi Communication Technologies Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of CA2153516A1 publication Critical patent/CA2153516A1/en
Application granted granted Critical
Publication of CA2153516C publication Critical patent/CA2153516C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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

Abstract

A mobile station of a code division multiple access mobile communication system for transmission by carrying out quadrature multiplexing of a pilot signal and a data signal having I and Q components spread by spectrum from the base station to the mobile station, includes a despreading circuit for generating phase error signals (.DELTA.I, .DELTA.Q) by despreading the quadrature multi-plexed reception signals (I', Q') by using spreading codes for pilot symbol, another spreading circuit for generating a data signal group by despreading the recep-tion signals by using spreading codes for data symbol, accumulators for converting the transmission rate of the phase error signals and the data signal group into the symbol rate, an averaging circuit for generating phase correction signals from the phase error signals of the symbol rate, and a phase correction circuit for gener-ating data signals (I, Q) with the phase shifts being removed therefrom, by correcting the data signal group by the phase correction signals.
CA002153516A 1994-07-20 1995-07-10 Mobile station for cdma mobile communication system and detection method of the same Expired - Fee Related CA2153516C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP16767594 1994-07-20
JP06-167675 1994-07-20

Publications (2)

Publication Number Publication Date
CA2153516A1 true CA2153516A1 (en) 1996-01-21
CA2153516C CA2153516C (en) 1999-06-01

Family

ID=15854142

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002153516A Expired - Fee Related CA2153516C (en) 1994-07-20 1995-07-10 Mobile station for cdma mobile communication system and detection method of the same

Country Status (6)

Country Link
US (1) US5666352A (en)
EP (1) EP0693830B1 (en)
KR (1) KR0159829B1 (en)
CN (1) CN1058830C (en)
CA (1) CA2153516C (en)
DE (1) DE69530640T2 (en)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2728034B2 (en) * 1995-06-15 1998-03-18 日本電気株式会社 Spread spectrum signal receiver
ZA965340B (en) 1995-06-30 1997-01-27 Interdigital Tech Corp Code division multiple access (cdma) communication system
JP3200547B2 (en) 1995-09-11 2001-08-20 株式会社日立製作所 CDMA mobile communication system
US6246715B1 (en) * 1998-06-26 2001-06-12 Samsung Electronics Co., Ltd. Data transmitter and receiver of a DS-CDMA communication system
US6765895B1 (en) 1996-03-15 2004-07-20 Matsushita Electric Industrial Co., Ltd. Spectrum spread communication system
JP2934185B2 (en) 1996-03-15 1999-08-16 松下電器産業株式会社 CDMA cellular radio base station apparatus, mobile station apparatus, and transmission method
JPH09307951A (en) * 1996-03-15 1997-11-28 Matsushita Electric Ind Co Ltd Spread spectrum communication equipment
US6678311B2 (en) 1996-05-28 2004-01-13 Qualcomm Incorporated High data CDMA wireless communication system using variable sized channel codes
US6396804B2 (en) * 1996-05-28 2002-05-28 Qualcomm Incorporated High data rate CDMA wireless communication system
JPH09321659A (en) * 1996-05-31 1997-12-12 Fujitsu Ltd Spread spectrum communication system
US6094415A (en) * 1996-06-20 2000-07-25 Lockheed Martin Corporation Vector division multiple access communication system
US5784366A (en) * 1996-08-27 1998-07-21 Transsky Corp. Wideband code-division-multiple access system and method
JPH10190626A (en) * 1996-12-27 1998-07-21 Matsushita Electric Ind Co Ltd Cdma reception device
JP3377389B2 (en) * 1997-01-10 2003-02-17 株式会社鷹山 Signal receiving method and apparatus in spread spectrum wireless communication system
US6154483A (en) * 1997-04-07 2000-11-28 Golden Bridge Technology, Inc. Coherent detection using matched filter enhanced spread spectrum demodulation
JP3283210B2 (en) * 1997-05-30 2002-05-20 株式会社鷹山 Signal receiving apparatus in spread spectrum communication system
JP3204925B2 (en) * 1997-06-18 2001-09-04 株式会社エヌ・ティ・ティ・ドコモ Signal receiving apparatus in CDMA communication system
US6331998B1 (en) * 1998-08-28 2001-12-18 Industrial Technology Research Institute Partially matched filter for spread spectrum communication
US6310926B1 (en) 1998-09-25 2001-10-30 Telefonaktiebolaget Lm Ericsson (Publ) Adjustment of the sampling frequency in a multicarrier receiver
EP2146468B1 (en) * 1999-04-02 2011-01-05 NTT DoCoMo, Inc. Fading frequency decision device and method
KR100374028B1 (en) * 1999-09-06 2003-02-26 삼성전자주식회사 Apparatus and method for detecting a received on-off keying signal in a cdma mobile communication system
DE19948370A1 (en) * 1999-10-06 2001-06-21 Infineon Technologies Ag Device and method for processing a digital data signal in a CDMA radio transmitter
DE19949007C1 (en) * 1999-10-11 2001-02-08 Bosch Gmbh Robert Signal reception method, for mobile radio station in cellular radio system ,has calculated phase correction factor used for correction of phases before comparison with threshold values for data detection
JP2001177436A (en) * 1999-12-15 2001-06-29 Nec Corp Afc controller in mobile communication system and its method, and mobile communication device using it
ES2345337T3 (en) 2000-03-28 2010-09-21 Interdigital Technology Corporation CDMA SYSTEM THAT USES A PREROTATION BEFORE THE TRANSMISSION.
JP2002290254A (en) * 2001-03-26 2002-10-04 Nec Corp Direct conversion receiver
DE10224165A1 (en) * 2002-05-31 2003-12-24 Advanced Micro Devices Inc Phase error correction using despread signals
KR100602642B1 (en) * 2004-01-30 2006-07-19 삼성전자주식회사 method and apparatus for compensateing Phase error in Base Station System
US7327776B2 (en) * 2004-12-20 2008-02-05 Chung Shan Institute Of Science And Technology, Armaments Bureau, M.N.D. Time domain spreading method and apparatus for a UWB receiver comprising fast fourier transform and exchange of real and imaginary complex signal components
US7773690B2 (en) * 2005-07-20 2010-08-10 Broadcom Corporation Angle estimation for space-time block code (STBC) modulated signal
US7643578B2 (en) * 2005-07-20 2010-01-05 Broadcom Corporation Angle estimation for modulated signal
JP2007221203A (en) * 2006-02-14 2007-08-30 Oki Electric Ind Co Ltd Demodulation system
KR100815116B1 (en) * 2006-04-05 2008-03-20 한국광기술원 Illumination apparatus using LED adjustable View angle and angular distribution
JP6236894B2 (en) * 2013-06-11 2017-11-29 富士通株式会社 Optical phase compensation device, optical receiver, network management system, and optical phase compensation method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3886967T2 (en) * 1987-03-20 1994-07-07 Hitachi Ltd Portable cordless communication system and method.

Also Published As

Publication number Publication date
DE69530640T2 (en) 2004-03-11
CA2153516C (en) 1999-06-01
CN1058830C (en) 2000-11-22
EP0693830B1 (en) 2003-05-07
CN1118976A (en) 1996-03-20
EP0693830A2 (en) 1996-01-24
DE69530640D1 (en) 2003-06-12
US5666352A (en) 1997-09-09
KR960006353A (en) 1996-02-23
EP0693830A3 (en) 1996-03-13
KR0159829B1 (en) 1998-12-01

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 20090710