WO2000003493A3 - Cdma receiver and method of operation - Google Patents

Cdma receiver and method of operation Download PDF

Info

Publication number
WO2000003493A3
WO2000003493A3 PCT/US1999/014625 US9914625W WO0003493A3 WO 2000003493 A3 WO2000003493 A3 WO 2000003493A3 US 9914625 W US9914625 W US 9914625W WO 0003493 A3 WO0003493 A3 WO 0003493A3
Authority
WO
WIPO (PCT)
Prior art keywords
cdma receiver
baseband
obviating
attenuate
voltages
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.)
Ceased
Application number
PCT/US1999/014625
Other languages
French (fr)
Other versions
WO2000003493A2 (en
Inventor
Inchul Kang
Winston Y Sun
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.)
SK Hynix America Inc
Original Assignee
Hyundai Electronics America 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 Hyundai Electronics America Inc filed Critical Hyundai Electronics America Inc
Priority to JP2000559651A priority Critical patent/JP2002520942A/en
Priority to EP99932001A priority patent/EP1097520A2/en
Priority to KR1020017000316A priority patent/KR20010103557A/en
Publication of WO2000003493A2 publication Critical patent/WO2000003493A2/en
Publication of WO2000003493A3 publication Critical patent/WO2000003493A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H04B1/71—Interference-related aspects the interference being narrowband interference
    • H04B1/7101—Interference-related aspects the interference being narrowband interference with estimation filters
    • 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
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)

Abstract

The present invention provides a CDMA receiver which uses less expensive, more manufacturable digital filters in combination with noise cancellation circuitry to attenuate highly correlated signals. In addition, the CDMA receiver employs digital IF sampling in the baseband conversion process to remove superimposed DC voltages from the baseband data, obviating the need for DC offset voltage generators.
PCT/US1999/014625 1998-07-10 1999-06-28 Cdma receiver and method of operation Ceased WO2000003493A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2000559651A JP2002520942A (en) 1998-07-10 1999-06-28 Improved CDMA receiver and method of operation thereof
EP99932001A EP1097520A2 (en) 1998-07-10 1999-06-28 Cdma receiver and method of operation
KR1020017000316A KR20010103557A (en) 1998-07-10 1999-06-28 Cdma receiver and method of operation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/113,791 US6370133B1 (en) 1998-07-10 1998-07-10 CDMA receiver and method of operation
US09/113,791 1998-07-10

Publications (2)

Publication Number Publication Date
WO2000003493A2 WO2000003493A2 (en) 2000-01-20
WO2000003493A3 true WO2000003493A3 (en) 2000-04-13

Family

ID=22351550

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/014625 Ceased WO2000003493A2 (en) 1998-07-10 1999-06-28 Cdma receiver and method of operation

Country Status (6)

Country Link
US (1) US6370133B1 (en)
EP (1) EP1097520A2 (en)
JP (1) JP2002520942A (en)
KR (1) KR20010103557A (en)
TW (1) TW461197B (en)
WO (1) WO2000003493A2 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6477196B1 (en) * 1999-08-30 2002-11-05 Rockwell Collins, Inc. Direct sequence spread spectrum communications receiver and method for efficient narrow-band signal excision
FI20000700A7 (en) * 2000-03-24 2001-09-25 Nokia Corp Mobile station with improved power saving and method for saving power
EP1215813B1 (en) * 2000-12-13 2006-10-04 Juniper Networks, Inc. Tuner for digital receiver with multiple input and multiple output channels
US20020131386A1 (en) * 2001-01-26 2002-09-19 Docomo Communications Laboratories Usa, Inc. Mobility prediction in wireless, mobile access digital networks
US6771720B1 (en) * 2001-03-30 2004-08-03 Skyworks Solutions, Inc. Amplification control scheme for a receiver
KR100767547B1 (en) * 2001-05-14 2007-10-16 엘지노텔 주식회사 Automatic Gain Control Device of Digital Receiver for Code Division Multiple Access
US7130364B2 (en) * 2002-01-31 2006-10-31 Nokia Corporation Interference dependent ADC headroom adjustment
US6792037B2 (en) 2002-02-28 2004-09-14 Interdigital Technology Corporation Apparatus and method of searching for known sequences
WO2004075502A2 (en) * 2003-02-19 2004-09-02 Matsushita Electric Industrial Co. Ltd. Receiving apparatus and method for digital multi-carrier transmission
JP3962785B2 (en) * 2003-07-02 2007-08-22 テクトロニクス・インターナショナル・セールス・ゲーエムベーハー Signal analyzer and frequency domain data generation method
WO2005099205A1 (en) * 2004-03-08 2005-10-20 Thomson Licensing Method and apparatus for robust automatic frequency control in cdma systems with constant pilot signals
US20070230635A1 (en) * 2006-04-03 2007-10-04 Leif Wilhelmsson Wireless communication reception with cooperation between agc and digital baseband
JP4242397B2 (en) * 2006-05-29 2009-03-25 国立大学法人東京工業大学 Wireless communication apparatus and wireless communication method
US8086205B2 (en) * 2008-05-02 2011-12-27 Infineon Technologies Ag Multimode receiver with active blocker suppression
US8111786B2 (en) * 2008-06-11 2012-02-07 Mediatek Inc. Signal converters
RU2541200C1 (en) * 2013-12-03 2015-02-10 Федеральное государственное казенное военное образовательное учреждение высшего профессионального образования "ВОЕННАЯ АКАДЕМИЯ СВЯЗИ имени Маршала Советского Союза С.М. Буденного" Министерства обороны Российской Федерации Method of generating quadrature amplitude-shift keyed signals

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5268927A (en) * 1992-10-06 1993-12-07 Mayflower Communications Company, Inc. Digital adaptive transversal filter for spread spectrum receivers
US5361276A (en) * 1993-09-13 1994-11-01 At&T Bell Laboratories All digital maximum likelihood based spread spectrum receiver
US5422909A (en) * 1993-11-30 1995-06-06 Motorola, Inc. Method and apparatus for multi-phase component downconversion
US5640416A (en) * 1995-06-07 1997-06-17 Comsat Corporation Digital downconverter/despreader for direct sequence spread spectrum communications system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5570349A (en) 1994-06-07 1996-10-29 Stanford Telecommunications, Inc. Wireless direct sequence spread spectrum digital cellular telephone system
US5812542A (en) * 1996-03-18 1998-09-22 Motorola, Inc. Method for determining weighting coefficients in a CDMA radio receiver
US5715516A (en) 1995-10-18 1998-02-03 Cellular Telecom, Ltd. Method and apparatus for wireless communication employing collector arrays
JP2800891B2 (en) * 1996-12-17 1998-09-21 日本電気株式会社 CDMA multi-code transmission device
US6097955A (en) * 1997-09-12 2000-08-01 Lucent Technologies, Inc. Apparatus and method for optimizing CPU usage in processing paging messages within a cellular communications system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5268927A (en) * 1992-10-06 1993-12-07 Mayflower Communications Company, Inc. Digital adaptive transversal filter for spread spectrum receivers
US5361276A (en) * 1993-09-13 1994-11-01 At&T Bell Laboratories All digital maximum likelihood based spread spectrum receiver
US5422909A (en) * 1993-11-30 1995-06-06 Motorola, Inc. Method and apparatus for multi-phase component downconversion
US5640416A (en) * 1995-06-07 1997-06-17 Comsat Corporation Digital downconverter/despreader for direct sequence spread spectrum communications system

Also Published As

Publication number Publication date
WO2000003493A2 (en) 2000-01-20
TW461197B (en) 2001-10-21
KR20010103557A (en) 2001-11-23
US6370133B1 (en) 2002-04-09
EP1097520A2 (en) 2001-05-09
JP2002520942A (en) 2002-07-09

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