WO2008049623A3 - Receiver and transmitter in a telecommunication system - Google Patents

Receiver and transmitter in a telecommunication system Download PDF

Info

Publication number
WO2008049623A3
WO2008049623A3 PCT/EP2007/009286 EP2007009286W WO2008049623A3 WO 2008049623 A3 WO2008049623 A3 WO 2008049623A3 EP 2007009286 W EP2007009286 W EP 2007009286W WO 2008049623 A3 WO2008049623 A3 WO 2008049623A3
Authority
WO
WIPO (PCT)
Prior art keywords
transmitter
receiver
fourier transformer
telecommunication system
bit
Prior art date
Application number
PCT/EP2007/009286
Other languages
French (fr)
Other versions
WO2008049623A2 (en
Inventor
Ludwig Schwoerer
Original Assignee
Nokia Corp
Ludwig Schwoerer
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
Priority to EP06022392 priority Critical
Priority to EP06022392.2 priority
Priority to US11/654,572 priority
Priority to US11/654,572 priority patent/US20080101485A1/en
Application filed by Nokia Corp, Ludwig Schwoerer filed Critical Nokia Corp
Publication of WO2008049623A2 publication Critical patent/WO2008049623A2/en
Publication of WO2008049623A3 publication Critical patent/WO2008049623A3/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2626Arrangements specific to the transmitter
    • H04L27/2627Modulators
    • H04L27/2628Inverse Fourier transform modulators, e.g. IFFT/IDFT
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10Complex mathematical operations
    • G06F17/14Fourier, Walsh or analogous domain transformations, e.g. Laplace, Hilbert, Karhunen-Loeve, transforms
    • G06F17/141Discrete Fourier transforms
    • G06F17/142Fast Fourier transforms, e.g. using a Cooley-Tukey type algorithm
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2647Arrangements specific to the receiver
    • H04L27/2649Demodulators
    • H04L27/265Fourier transform demodulators
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2602Signal structure

Abstract

In telecommunication systems, in particular OFDM telecommunication systems, there is a Fourier transformer for transforming the data signal from time to frequency domain. The present invention proposes to define the bit-reversed output of the Fourier transformer at least as a part of a deinterleaving process in a receiver. In a transmitter, the bit-reversed input of the inverse Fourier transformer is used accordingly.
PCT/EP2007/009286 2006-10-26 2007-10-25 Receiver and transmitter in a telecommunication system WO2008049623A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP06022392 2006-10-26
EP06022392.2 2006-10-26
US11/654,572 2007-01-18
US11/654,572 US20080101485A1 (en) 2006-10-26 2007-01-18 Receiver and transmitter in a telecommunication system

Publications (2)

Publication Number Publication Date
WO2008049623A2 WO2008049623A2 (en) 2008-05-02
WO2008049623A3 true WO2008049623A3 (en) 2008-06-19

Family

ID=39269335

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/009286 WO2008049623A2 (en) 2006-10-26 2007-10-25 Receiver and transmitter in a telecommunication system

Country Status (1)

Country Link
WO (1) WO2008049623A2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3731284A (en) * 1971-12-27 1973-05-01 Bell Telephone Labor Inc Method and apparatus for reordering data
US5365470A (en) * 1993-02-10 1994-11-15 Trw Inc. Fast fourier transform multiplexed pipeline
US6631167B1 (en) * 1999-06-14 2003-10-07 Stmicroelectronics S.A. Process and device for transforming real data into complex symbols, in particular for the reception of phase-modulated and amplitude-modulated carriers transmitted on a telephone line
US20060072649A1 (en) * 2002-10-26 2006-04-06 Kyung-Hi Chang Frequency hopping ofdma method using symbols of comb pattern

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3731284A (en) * 1971-12-27 1973-05-01 Bell Telephone Labor Inc Method and apparatus for reordering data
US5365470A (en) * 1993-02-10 1994-11-15 Trw Inc. Fast fourier transform multiplexed pipeline
US6631167B1 (en) * 1999-06-14 2003-10-07 Stmicroelectronics S.A. Process and device for transforming real data into complex symbols, in particular for the reception of phase-modulated and amplitude-modulated carriers transmitted on a telephone line
US20060072649A1 (en) * 2002-10-26 2006-04-06 Kyung-Hi Chang Frequency hopping ofdma method using symbols of comb pattern

Also Published As

Publication number Publication date
WO2008049623A2 (en) 2008-05-02

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