FI20116245A - Constellation Editing for OFDM - Google Patents

Constellation Editing for OFDM Download PDF

Info

Publication number
FI20116245A
FI20116245A FI20116245A FI20116245A FI20116245A FI 20116245 A FI20116245 A FI 20116245A FI 20116245 A FI20116245 A FI 20116245A FI 20116245 A FI20116245 A FI 20116245A FI 20116245 A FI20116245 A FI 20116245A
Authority
FI
Finland
Prior art keywords
constellation
ofdm
editing
constellation editing
Prior art date
Application number
FI20116245A
Other languages
Finnish (fi)
Swedish (sv)
Inventor
Gunes Kurt
Coskun Sahin
Original Assignee
Turkcell Iletisim Hizmetleri Anonim Sirketi
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 claimed from TR2009/03651A external-priority patent/TR200903651A1/en
Application filed by Turkcell Iletisim Hizmetleri Anonim Sirketi filed Critical Turkcell Iletisim Hizmetleri Anonim Sirketi
Publication of FI20116245A publication Critical patent/FI20116245A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/3405—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
    • H04L27/3411—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power reducing the peak to average power ratio or the mean power of the constellation; Arrangements for increasing the shape gain of a signal set
    • 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
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0041—Arrangements at the transmitter end
    • H04L1/0042—Encoding specially adapted to other signal generation operation, e.g. in order to reduce transmit distortions, jitter, or to improve signal shape
    • 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
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2646—Arrangements specific to the transmitter only using feedback from receiver for adjusting OFDM transmission parameters, e.g. transmission timing or guard interval length
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/36—Modulator circuits; Transmitter circuits
    • H04L27/366—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator
    • H04L27/367—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator using predistortion
    • H04L27/368—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator using predistortion adaptive predistortion

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
FI20116245A 2009-05-11 2011-12-08 Constellation Editing for OFDM FI20116245A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2009/03651A TR200903651A1 (en) 2008-12-30 2009-05-11 OFDM is a transmitter used in communication and a receiver operating in accordance with this transmitter.
PCT/IB2009/055565 WO2010076699A1 (en) 2008-12-30 2009-12-08 Demodulation of ofdm qam signals with channel estimation errors

Publications (1)

Publication Number Publication Date
FI20116245A true FI20116245A (en) 2011-12-08

Family

ID=42136245

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20116245A FI20116245A (en) 2009-05-11 2011-12-08 Constellation Editing for OFDM

Country Status (3)

Country Link
FI (1) FI20116245A (en)
SE (1) SE1151055A1 (en)
WO (1) WO2010131125A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108631879B (en) * 2018-05-14 2019-11-12 华侨大学 A kind of light orthogonal frequency division multiplexing communication method and system based on probability shaping mapping
US10785085B2 (en) * 2019-01-15 2020-09-22 Nokia Technologies Oy Probabilistic shaping for physical layer design

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6327314B1 (en) 1998-04-01 2001-12-04 At&T Corp. Method and apparatus for channel estimation for multicarrier systems
US7260055B2 (en) 2003-05-30 2007-08-21 Agency For Science, Technology, And Research Method for reducing channel estimation error in an OFDM system

Also Published As

Publication number Publication date
WO2010131125A1 (en) 2010-11-18
SE1151055A1 (en) 2012-02-13

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Legal Events

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