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WO2002039590A3 - Methods and apparatus for encoding and decoding data - Google Patents

Methods and apparatus for encoding and decoding data Download PDF

Info

Publication number
WO2002039590A3
WO2002039590A3 PCT/GB2001/005011 GB0105011W WO0239590A3 WO 2002039590 A3 WO2002039590 A3 WO 2002039590A3 GB 0105011 W GB0105011 W GB 0105011W WO 0239590 A3 WO0239590 A3 WO 0239590A3
Authority
WO
WIPO (PCT)
Prior art keywords
data signal
encoded data
encoding
methods
decoding data
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/GB2001/005011
Other languages
French (fr)
Other versions
WO2002039590A2 (en
Inventor
Stephen William Wales
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.)
Roke Manor Research Ltd
Original Assignee
Roke Manor Research 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 Roke Manor Research Ltd filed Critical Roke Manor Research Ltd
Priority to AU2002215101A priority Critical patent/AU2002215101A1/en
Publication of WO2002039590A2 publication Critical patent/WO2002039590A2/en
Anticipated expiration legal-status Critical
Publication of WO2002039590A3 publication Critical patent/WO2002039590A3/en
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/004—Orthogonal
    • H04J13/0048—Walsh
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/16—Code allocation
    • H04J13/18—Allocation of orthogonal codes
    • 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
    • H04B2201/7097—Direct sequence modulation interference
    • H04B2201/709709—Methods of preventing interference

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A method for encoding data is presented, comprising the steps of: generating a respective data signal for each of a plurality of users; coding each of the data signals with a respective orthogonal spreading code to produce respective encoded data signals; and summing the encoded data signals to produce a total encoded data signal. The method further comprises the step of applying a phase shift to one of the data signal, the encoded data signal and the total encoded data signal.
PCT/GB2001/005011 2000-11-09 2001-11-09 Methods and apparatus for encoding and decoding data Ceased WO2002039590A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002215101A AU2002215101A1 (en) 2000-11-09 2001-11-09 Methods and apparatus for encoding and decoding data

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0027392A GB0027392D0 (en) 2000-11-09 2000-11-09 Code specific phase shifts applied to spread spectrum systems using walsh-handarmed codes
GB0027392.0 2000-11-09

Publications (2)

Publication Number Publication Date
WO2002039590A2 WO2002039590A2 (en) 2002-05-16
WO2002039590A3 true WO2002039590A3 (en) 2003-05-22

Family

ID=9902880

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2001/005011 Ceased WO2002039590A2 (en) 2000-11-09 2001-11-09 Methods and apparatus for encoding and decoding data

Country Status (3)

Country Link
AU (1) AU2002215101A1 (en)
GB (2) GB0027392D0 (en)
WO (1) WO2002039590A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070113967A (en) 2006-05-26 2007-11-29 엘지전자 주식회사 Phase shift based precoding method and tranceiver supporting the same
KR20080026010A (en) 2006-09-19 2008-03-24 엘지전자 주식회사 Data transmission method using phase shift based precoding and transmitting and receiving device
KR20080076683A (en) 2007-02-14 2008-08-20 엘지전자 주식회사 Phase Shift-Based Precoding Method and Transceivers Supporting It
KR20090030200A (en) 2007-09-19 2009-03-24 엘지전자 주식회사 Data Transceiving Method Using Phase-Transition-Based Precoding and Transceivers Supporting It
CN105577703B (en) * 2016-03-18 2019-01-25 山东省计算中心（国家超级计算济南中心） User rights management method of big data police cloud system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0924870A2 (en) * 1997-12-15 1999-06-23 Lucent Technologies Inc. Reducing peak to average ratio of transmit signal by intentional phase rotating among composed signals
GB2347324A (en) * 1999-02-25 2000-08-30 Fujitsu Ltd Code-division multiplex using phase modulation

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2734955B2 (en) * 1993-12-24 1998-04-02 日本電気株式会社 Wireless data communication device
JP2780688B2 (en) * 1995-11-15 1998-07-30 日本電気株式会社 Phase modulation multiplex transmitter
JP3311951B2 (en) * 1996-12-20 2002-08-05 富士通株式会社 Code multiplex transmitter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0924870A2 (en) * 1997-12-15 1999-06-23 Lucent Technologies Inc. Reducing peak to average ratio of transmit signal by intentional phase rotating among composed signals
GB2347324A (en) * 1999-02-25 2000-08-30 Fujitsu Ltd Code-division multiplex using phase modulation

Also Published As

Publication number Publication date
GB0127290D0 (en) 2002-01-02
AU2002215101A1 (en) 2002-05-21
GB2373691A (en) 2002-09-25
GB0027392D0 (en) 2001-03-07
WO2002039590A2 (en) 2002-05-16

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