KR100447550B1 - 광대역cdma신호의재직교화 - Google Patents

광대역cdma신호의재직교화 Download PDF

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Publication number
KR100447550B1
KR100447550B1 KR10-1998-0704376A KR19980704376A KR100447550B1 KR 100447550 B1 KR100447550 B1 KR 100447550B1 KR 19980704376 A KR19980704376 A KR 19980704376A KR 100447550 B1 KR100447550 B1 KR 100447550B1
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KR
South Korea
Prior art keywords
signal
signals
code
receiver
despreading
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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
KR10-1998-0704376A
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English (en)
Korean (ko)
Other versions
KR19990072070A (ko
Inventor
폴 더블유 덴트
Original Assignee
에릭슨 인크.
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Application filed by 에릭슨 인크. filed Critical 에릭슨 인크.
Publication of KR19990072070A publication Critical patent/KR19990072070A/ko
Application granted granted Critical
Publication of KR100447550B1 publication Critical patent/KR100447550B1/ko
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H04B1/7097—Interference-related 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
    • H04B1/7097—Interference-related aspects
    • H04B1/7103—Interference-related aspects the interference being multiple access interference
    • H04B1/7107—Subtractive interference cancellation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • 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
    • H04B1/7097—Interference-related aspects
    • H04B1/71—Interference-related aspects the interference being narrowband interference
    • H04B1/7101—Interference-related aspects the interference being narrowband interference with estimation filters

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Noise Elimination (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
KR10-1998-0704376A 1995-12-11 1996-12-10 광대역cdma신호의재직교화 Expired - Lifetime KR100447550B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US8/570,431 1995-12-11
US08/570,431 US5862173A (en) 1995-12-11 1995-12-11 Re-orthogonalization of wideband CDMA signals
US08/570,431 1995-12-11

Publications (2)

Publication Number Publication Date
KR19990072070A KR19990072070A (ko) 1999-09-27
KR100447550B1 true KR100447550B1 (ko) 2004-10-15

Family

ID=24279627

Family Applications (1)

Application Number Title Priority Date Filing Date
KR10-1998-0704376A Expired - Lifetime KR100447550B1 (ko) 1995-12-11 1996-12-10 광대역cdma신호의재직교화

Country Status (11)

Country Link
US (1) US5862173A (https=)
EP (2) EP0867077B1 (https=)
JP (1) JP3753156B2 (https=)
KR (1) KR100447550B1 (https=)
CN (1) CN1188955C (https=)
AU (1) AU715112B2 (https=)
BR (1) BR9611934B1 (https=)
CA (1) CA2239232C (https=)
DE (2) DE69636940T2 (https=)
SG (1) SG85665A1 (https=)
WO (1) WO1997022185A2 (https=)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
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US6233272B1 (en) * 1996-03-19 2001-05-15 Yrp Mobile Telecommunications Key Technology Research Laboratories Co., Ltd. Spread spectrum communication receiver
GB2314237B (en) * 1996-06-11 2000-12-20 Plextek Ltd Communications system
FI104020B1 (fi) * 1997-06-23 1999-10-29 Nokia Telecommunications Oy Vastaanottomenetelmä ja vastaanotin
US6542561B1 (en) * 1998-01-21 2003-04-01 Sony Corporation Information receiving device and method
US6061551A (en) 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for down-converting electromagnetic signals
KR100268227B1 (ko) 1998-09-22 2000-10-16 윤종용 광대역 코드분할 다중접속 시스템의 이진 위상 천이 변조/구적위상 천이 변조 겸용 변조기
US6493405B1 (en) 1999-03-02 2002-12-10 Harris Corporation Correlator having enhanced memory for reference and input data
US6438182B1 (en) 1999-03-02 2002-08-20 Harris Corporation Correlator with serial-parallel partition
US6038271A (en) * 1999-03-02 2000-03-14 Harris Corporation Correlator with cascade data paths to facilitate expansion of correlator length
EP1517436B1 (en) * 1999-10-07 2016-05-04 Parkervision, Inc. Down converter using subsampling
US6934317B1 (en) 2000-10-11 2005-08-23 Ericsson Inc. Systems and methods for communicating spread spectrum signals using variable signal constellations
CA2356077A1 (en) * 2001-08-28 2003-02-28 Sirific Wireless Corporation Improved apparatus and method for down conversion
US7046720B2 (en) * 2001-11-12 2006-05-16 Telefonktiebolaget Lm Ericsson (Publ) System and method for DC offset compensation in a WCDMA receiver
CA2477310A1 (en) * 2002-02-25 2003-08-28 Sirific Wireless Corporation Frequency down converter using a multitone local oscillator
US20040087296A1 (en) * 2002-10-25 2004-05-06 Gct Semiconductor, Inc. Radio receiver and method for AM suppression and DC-offset removal
EP1630713B1 (en) * 2004-08-24 2020-05-20 Sony Deutschland GmbH Backscatter interrogator reception method and interrogator for a modulated backscatter system
US7502410B2 (en) * 2005-09-30 2009-03-10 Freescale Semiconductor, Inc. Method and system for controlling a notching mechanism
JP2007215100A (ja) * 2006-02-13 2007-08-23 Japan Radio Co Ltd 受信装置
US20090088106A1 (en) * 2007-09-27 2009-04-02 Nanoamp Solutions Inc. (Cayman) Radio frequency filtering
US20140369395A1 (en) * 2013-06-13 2014-12-18 Lsi Corporation Error Detection Based on Superheterodyne Conversion and Direct Downconversion
US10305651B2 (en) * 2014-10-03 2019-05-28 University Of South Florida Superposed signaling for bandwidth efficiency
CN105208565A (zh) * 2015-07-06 2015-12-30 国网天津市电力公司 用于微功率无线的区域覆盖电力通信专网的物理层构架
CN105071999A (zh) * 2015-07-06 2015-11-18 国网天津市电力公司 微功率无线的区域覆盖电力通信专网

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5241702A (en) * 1990-09-06 1993-08-31 Telefonaktiebolaget L M Ericsson D.c. offset compensation in a radio receiver
US5151919A (en) * 1990-12-17 1992-09-29 Ericsson-Ge Mobile Communications Holding Inc. Cdma subtractive demodulation
US5218619A (en) * 1990-12-17 1993-06-08 Ericsson Ge Mobile Communications Holding, Inc. CDMA subtractive demodulation
US5105435A (en) * 1990-12-21 1992-04-14 Motorola, Inc. Method and apparatus for cancelling spread-spectrum noise
US5467367A (en) * 1991-06-07 1995-11-14 Canon Kabushiki Kaisha Spread spectrum communication apparatus and telephone exchange system
US5353352A (en) * 1992-04-10 1994-10-04 Ericsson Ge Mobile Communications Inc. Multiple access coding for radio communications
MX9301888A (es) * 1992-04-10 1993-11-30 Ericsson Telefon Ab L M Acceso multiple de division de tiempo para acceso de un movil en un sistema de acceso multiple de division de codigo.
US5224122A (en) * 1992-06-29 1993-06-29 Motorola, Inc. Method and apparatus for canceling spread-spectrum noise
US5323418A (en) * 1993-01-13 1994-06-21 Motorola, Inc. Code division multiple access (CDMA) inbound messaging system utilizing interference cancellation to recover inbound messages
US5553062A (en) * 1993-04-22 1996-09-03 Interdigital Communication Corporation Spread spectrum CDMA interference canceler system and method
US5546424A (en) * 1993-06-30 1996-08-13 Casio Computer Co., Ltd. Spread spectrum communication system
US5490165A (en) * 1993-10-28 1996-02-06 Qualcomm Incorporated Demodulation element assignment in a system capable of receiving multiple signals
US5414728A (en) * 1993-11-01 1995-05-09 Qualcomm Incorporated Method and apparatus for bifurcating signal transmission over in-phase and quadrature phase spread spectrum communication channels

Also Published As

Publication number Publication date
EP0867077B1 (en) 2002-09-25
JP3753156B2 (ja) 2006-03-08
DE69636940T2 (de) 2007-12-13
EP1271797A2 (en) 2003-01-02
BR9611934A (pt) 1999-06-29
DE69623988D1 (de) 2002-10-31
AU1335197A (en) 1997-07-03
CN1188955C (zh) 2005-02-09
AU715112B2 (en) 2000-01-20
BR9611934B1 (pt) 2008-11-18
DE69623988T2 (de) 2003-04-10
EP0867077A2 (en) 1998-09-30
EP1271797B1 (en) 2007-02-28
WO1997022185A2 (en) 1997-06-19
EP1271797A3 (en) 2003-04-16
CA2239232A1 (en) 1997-06-19
CA2239232C (en) 2006-02-21
US5862173A (en) 1999-01-19
SG85665A1 (en) 2002-01-15
KR19990072070A (ko) 1999-09-27
CN1208517A (zh) 1999-02-17
WO1997022185A3 (en) 1997-09-18
JP2000502226A (ja) 2000-02-22
DE69636940D1 (de) 2007-04-12

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