WO2009044176A8 - Method and device of transmitting an ofdm signal - Google Patents

Method and device of transmitting an ofdm signal Download PDF

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Publication number
WO2009044176A8
WO2009044176A8 PCT/GB2008/003386 GB2008003386W WO2009044176A8 WO 2009044176 A8 WO2009044176 A8 WO 2009044176A8 GB 2008003386 W GB2008003386 W GB 2008003386W WO 2009044176 A8 WO2009044176 A8 WO 2009044176A8
Authority
WO
WIPO (PCT)
Prior art keywords
symbol
parallel
original data
sequences
transmitting
Prior art date
Application number
PCT/GB2008/003386
Other languages
French (fr)
Other versions
WO2009044176A2 (en
WO2009044176A3 (en
Inventor
Nyembezi Nyirongo
Wasim Qamar Malik
David John Edwards
Original Assignee
Isis Innovations Ltd
Nyembezi Nyirongo
Wasim Qamar Malik
David John Edwards
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 Isis Innovations Ltd, Nyembezi Nyirongo, Wasim Qamar Malik, David John Edwards filed Critical Isis Innovations Ltd
Publication of WO2009044176A2 publication Critical patent/WO2009044176A2/en
Publication of WO2009044176A3 publication Critical patent/WO2009044176A3/en
Publication of WO2009044176A8 publication Critical patent/WO2009044176A8/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Radio Transmission System (AREA)

Abstract

A method of transmitting a number of parallel sequences of original data symbols includes modulating the parallel sequences on to respective orthogonal sub-carriers by applying a discrete inverse transform to each original data symbol to obtain a corresponding number of parallel symbol sequences, each symbol (14, 16) having a length corresponding to a number of samples in an original data symbol. The method further includes generating one of a corresponding number of parallel signals from each symbol sequence, each of the parallel signals being partitioned into symbol periods (ΔT1-AT4 ) of a generally equal length corresponding to at least the length of one symbol (14, 16). At least one symbol period [ΔT2, ΔT4) consisting of at least part of a padding sequence (15,17) is included adjacent a symbol period [ΔT1, ΔT3) including one of the symbols (14, 16) in at least one of the parallel signals.
PCT/GB2008/003386 2007-10-05 2008-10-06 Method and device of transmitting an ofdm signal WO2009044176A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0719513.4 2007-10-05
GB0719513A GB0719513D0 (en) 2007-10-05 2007-10-05 Method of transmitting a signal comprising a sequence of data symbols, method of recovering the signal, transmitter, receiver and signal

Publications (3)

Publication Number Publication Date
WO2009044176A2 WO2009044176A2 (en) 2009-04-09
WO2009044176A3 WO2009044176A3 (en) 2009-05-22
WO2009044176A8 true WO2009044176A8 (en) 2009-07-09

Family

ID=38739213

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2008/003386 WO2009044176A2 (en) 2007-10-05 2008-10-06 Method and device of transmitting an ofdm signal

Country Status (2)

Country Link
GB (1) GB0719513D0 (en)
WO (1) WO2009044176A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104429017B (en) * 2013-06-25 2017-08-18 华为技术有限公司 A kind of method of data processing, apparatus and system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6950387B2 (en) * 2003-02-28 2005-09-27 Wisair Ltd. Communication method, system, and apparatus that combines aspects of cyclic prefix and zero padding techniques
WO2006076648A2 (en) * 2005-01-14 2006-07-20 Texas Instruments Incorporated Communication system overlap-and-add operation
US20070171993A1 (en) * 2006-01-23 2007-07-26 Faraday Technology Corp. Adaptive overlap and add circuit and method for zero-padding OFDM system

Also Published As

Publication number Publication date
WO2009044176A2 (en) 2009-04-09
WO2009044176A3 (en) 2009-05-22
GB0719513D0 (en) 2007-11-14

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