WO2008062163A3 - Improved methods and apparatus for transmitting and receiving data - Google Patents

Improved methods and apparatus for transmitting and receiving data Download PDF

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Publication number
WO2008062163A3
WO2008062163A3 PCT/GB2007/004400 GB2007004400W WO2008062163A3 WO 2008062163 A3 WO2008062163 A3 WO 2008062163A3 GB 2007004400 W GB2007004400 W GB 2007004400W WO 2008062163 A3 WO2008062163 A3 WO 2008062163A3
Authority
WO
WIPO (PCT)
Prior art keywords
data
block
sub
transmitting
channels
Prior art date
Application number
PCT/GB2007/004400
Other languages
French (fr)
Other versions
WO2008062163A2 (en
Inventor
Mustafa Kubilay Gurcan
Original Assignee
Imp Innovations Ltd
Mustafa Kubilay Gurcan
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 Imp Innovations Ltd, Mustafa Kubilay Gurcan filed Critical Imp Innovations Ltd
Publication of WO2008062163A2 publication Critical patent/WO2008062163A2/en
Publication of WO2008062163A3 publication Critical patent/WO2008062163A3/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
    • H04B1/7103—Interference-related aspects the interference being multiple access interference
    • H04B1/7105—Joint detection techniques, e.g. linear detectors
    • H04B1/71052—Joint detection techniques, e.g. linear detectors using decorrelation matrix
    • 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
    • H04B2201/70706—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation with means for reducing the peak-to-average power ratio
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/08—Closed loop power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/362—Aspects of the step size

Landscapes

  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

A method of transmitting data, the method comprising: receiving a block of input data from a data source, the block comprising a plurality of digits of data; processing said block of input data to form a plurality of sub-blocks of data; distributing the plurality of sub-blocks of data to each of a corresponding plurality of channel coders to produce a plurality of channels of sub-block data; in each of the said channels: repeating each digit of sub-block data a plurality of times, spreading the repeated data by multiplying by a spreading code sequence, and modulating the data and introducing a phase angle; summing the data from each of the said channels to produce output data; and transmitting the output data.. The method is particularly applicable, but by no means limited, to Code Division Multiple Access (CDMA) systems. Also provided are methods of receiving data, and transmitter and receiver apparatus.
PCT/GB2007/004400 2006-11-24 2007-11-16 Improved methods and apparatus for transmitting and receiving data WO2008062163A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0623481A GB0623481D0 (en) 2006-11-24 2006-11-24 Improved methods and apparatus for transmitting and receiving data
GB0623481.9 2006-11-24

Publications (2)

Publication Number Publication Date
WO2008062163A2 WO2008062163A2 (en) 2008-05-29
WO2008062163A3 true WO2008062163A3 (en) 2008-11-06

Family

ID=37636459

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2007/004400 WO2008062163A2 (en) 2006-11-24 2007-11-16 Improved methods and apparatus for transmitting and receiving data

Country Status (2)

Country Link
GB (1) GB0623481D0 (en)
WO (1) WO2008062163A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0904862D0 (en) 2009-03-20 2009-05-06 Imp Innovations Ltd A bit loading method and apparatus for multicode parallel channel communication
US8867515B2 (en) * 2011-05-19 2014-10-21 Empire Technology Development Llc Transmitting or receiving data via code division multiple access using highly correlated spreading codes assigned to a user

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5677930A (en) * 1995-07-19 1997-10-14 Ericsson Inc. Method and apparatus for spread spectrum channel estimation
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
US6556557B1 (en) * 1999-06-02 2003-04-29 At&T Corp. Method and system for reducing of peak-to-average power ratio of transmission signals comprising overlapping waveforms
EP1389844A1 (en) * 2002-08-16 2004-02-18 Lg Electronics Inc. Apparatus and method for increasing channel capacity of a mobile communication system using HPSK
US20050026578A1 (en) * 2003-07-31 2005-02-03 Motorola, Inc. Decorrelating rake receiver apparatus and method
EP1613013A1 (en) * 1998-08-31 2006-01-04 Qualcomm, Incorporated Method and apparatus for reducing amplitude variations and interference in communication signals employing inserted pilot signals
US20060215732A1 (en) * 2004-12-15 2006-09-28 Ning Chen Blind selected mapping techniques for crest factor reduction of forward link CDMA signals

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5677930A (en) * 1995-07-19 1997-10-14 Ericsson Inc. Method and apparatus for spread spectrum channel estimation
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
EP1613013A1 (en) * 1998-08-31 2006-01-04 Qualcomm, Incorporated Method and apparatus for reducing amplitude variations and interference in communication signals employing inserted pilot signals
US6556557B1 (en) * 1999-06-02 2003-04-29 At&T Corp. Method and system for reducing of peak-to-average power ratio of transmission signals comprising overlapping waveforms
EP1389844A1 (en) * 2002-08-16 2004-02-18 Lg Electronics Inc. Apparatus and method for increasing channel capacity of a mobile communication system using HPSK
US20050026578A1 (en) * 2003-07-31 2005-02-03 Motorola, Inc. Decorrelating rake receiver apparatus and method
US20060215732A1 (en) * 2004-12-15 2006-09-28 Ning Chen Blind selected mapping techniques for crest factor reduction of forward link CDMA signals

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
BAKER M P J ET AL: "POWER CONTROL IN UMTS RELEASE '99", INTERNATIONAL CONFERENCE ON 3G MOBILE COMMUNICATION TECHNOLOGIES, XX, XX, no. 471, 1999, pages 36 - 40, XP000900538 *
UZMI Z A ET AL: "A novel scheme for linear multiuser detection in asynchronous ds-cdma systems with frequency selective fading", GLOBECOM '99, vol. 1B, 5 December 1999 (1999-12-05), pages 981 - 985, XP010373690 *

Also Published As

Publication number Publication date
WO2008062163A2 (en) 2008-05-29
GB0623481D0 (en) 2007-01-03

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