SG85665A1 - Re-orthogonalization of wideband cdma signals - Google Patents

Re-orthogonalization of wideband cdma signals

Info

Publication number
SG85665A1
SG85665A1 SG9903780A SG1999003780A SG85665A1 SG 85665 A1 SG85665 A1 SG 85665A1 SG 9903780 A SG9903780 A SG 9903780A SG 1999003780 A SG1999003780 A SG 1999003780A SG 85665 A1 SG85665 A1 SG 85665A1
Authority
SG
Singapore
Prior art keywords
orthogonalization
wideband cdma
cdma signals
signals
wideband
Prior art date
Application number
SG9903780A
Other languages
English (en)
Inventor
Paul W Dent
Original Assignee
Ericsson Inc
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 Ericsson Inc filed Critical Ericsson Inc
Publication of SG85665A1 publication Critical patent/SG85665A1/en

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
    • H04B1/7097—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)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Noise Elimination (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
SG9903780A 1995-12-11 1996-12-10 Re-orthogonalization of wideband cdma signals SG85665A1 (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
SG85665A1 true SG85665A1 (en) 2002-01-15

Family

ID=24279627

Family Applications (1)

Application Number Title Priority Date Filing Date
SG9903780A SG85665A1 (en) 1995-12-11 1996-12-10 Re-orthogonalization of wideband cdma signals

Country Status (11)

Country Link
US (1) US5862173A (ja)
EP (2) EP1271797B1 (ja)
JP (1) JP3753156B2 (ja)
KR (1) KR100447550B1 (ja)
CN (1) CN1188955C (ja)
AU (1) AU715112B2 (ja)
BR (1) BR9611934B1 (ja)
CA (1) CA2239232C (ja)
DE (2) DE69636940T2 (ja)
SG (1) SG85665A1 (ja)
WO (1) WO1997022185A2 (ja)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US6438182B1 (en) 1999-03-02 2002-08-20 Harris Corporation Correlator with serial-parallel partition
US6493405B1 (en) 1999-03-02 2002-12-10 Harris Corporation Correlator having enhanced memory for reference and input data
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
KR20040102017A (ko) * 2002-02-25 2004-12-03 시리픽 와이어레스 코퍼레이션 스퓨리어스 응답 보상용 다운 컨버젼 방법 및 토폴로지
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
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
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

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
US5218619A (en) * 1990-12-17 1993-06-08 Ericsson Ge Mobile Communications Holding, Inc. CDMA subtractive demodulation
US5151919A (en) * 1990-12-17 1992-09-29 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
DE69623988T2 (de) 2003-04-10
DE69636940T2 (de) 2007-12-13
BR9611934B1 (pt) 2008-11-18
JP3753156B2 (ja) 2006-03-08
EP1271797A3 (en) 2003-04-16
US5862173A (en) 1999-01-19
BR9611934A (pt) 1999-06-29
EP0867077B1 (en) 2002-09-25
KR100447550B1 (ko) 2004-10-15
DE69623988D1 (de) 2002-10-31
CN1188955C (zh) 2005-02-09
DE69636940D1 (de) 2007-04-12
AU715112B2 (en) 2000-01-20
KR19990072070A (ko) 1999-09-27
WO1997022185A3 (en) 1997-09-18
EP1271797A2 (en) 2003-01-02
JP2000502226A (ja) 2000-02-22
EP0867077A2 (en) 1998-09-30
AU1335197A (en) 1997-07-03
CA2239232A1 (en) 1997-06-19
EP1271797B1 (en) 2007-02-28
WO1997022185A2 (en) 1997-06-19
CN1208517A (zh) 1999-02-17
CA2239232C (en) 2006-02-21

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