GB2523999B - Method and apparatus for improved QAM constellations - Google Patents

Method and apparatus for improved QAM constellations Download PDF

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Publication number
GB2523999B
GB2523999B GB1404158.6A GB201404158A GB2523999B GB 2523999 B GB2523999 B GB 2523999B GB 201404158 A GB201404158 A GB 201404158A GB 2523999 B GB2523999 B GB 2523999B
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United Kingdom
Prior art keywords
qam constellations
improved qam
improved
constellations
qam
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.)
Active
Application number
GB1404158.6A
Other versions
GB2523999A (en
GB201404158D0 (en
Inventor
Stott Jonathan
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.)
British Broadcasting Corp
Original Assignee
British Broadcasting Corp
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 British Broadcasting Corp filed Critical British Broadcasting Corp
Priority to GB1404158.6A priority Critical patent/GB2523999B/en
Publication of GB201404158D0 publication Critical patent/GB201404158D0/en
Publication of GB2523999A publication Critical patent/GB2523999A/en
Application granted granted Critical
Publication of GB2523999B publication Critical patent/GB2523999B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0064—Concatenated codes
    • H04L1/0065—Serial concatenated codes
    • 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
    • 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
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • 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
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H04L1/0017—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy where the mode-switching is based on Quality of Service requirement
    • 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
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0057—Block codes
    • H04L1/0058—Block-coded modulation

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)
GB1404158.6A 2014-03-10 2014-03-10 Method and apparatus for improved QAM constellations Active GB2523999B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1404158.6A GB2523999B (en) 2014-03-10 2014-03-10 Method and apparatus for improved QAM constellations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1404158.6A GB2523999B (en) 2014-03-10 2014-03-10 Method and apparatus for improved QAM constellations

Publications (3)

Publication Number Publication Date
GB201404158D0 GB201404158D0 (en) 2014-04-23
GB2523999A GB2523999A (en) 2015-09-16
GB2523999B true GB2523999B (en) 2020-12-30

Family

ID=50554777

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1404158.6A Active GB2523999B (en) 2014-03-10 2014-03-10 Method and apparatus for improved QAM constellations

Country Status (1)

Country Link
GB (1) GB2523999B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10887149B2 (en) 2017-12-28 2021-01-05 Aselsan Elektronik Sanayi Ve Ticaret Anonim Sirketi Method for block capacity equalization and optimization

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120147983A1 (en) * 2007-06-05 2012-06-14 Constellation Designs, Inc. Methods and apparatuses for signaling with geometric constellations in a raleigh fading channel
GB2499050A (en) * 2012-02-06 2013-08-07 British Broadcasting Corp Non-uniform QAM constellations with constellation points at positions of maximum capacity for a selected signal to noise ratio
WO2014009191A1 (en) * 2012-07-09 2014-01-16 Sony Corporation Coding and modulation apparatus using non-uniform constellation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120147983A1 (en) * 2007-06-05 2012-06-14 Constellation Designs, Inc. Methods and apparatuses for signaling with geometric constellations in a raleigh fading channel
GB2499050A (en) * 2012-02-06 2013-08-07 British Broadcasting Corp Non-uniform QAM constellations with constellation points at positions of maximum capacity for a selected signal to noise ratio
WO2014009191A1 (en) * 2012-07-09 2014-01-16 Sony Corporation Coding and modulation apparatus using non-uniform constellation

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"2010 IEEE International Conference on Communications (ICC)", 23-27 May 2010, IEEE, pp 1-6, Hossain et al, "BICM Transmission using Non-Uniform QAM Constellations: Performance Analysis and Design". *
"2013 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB)", 5-7 June 2013, IEEE, pp 1-6, Zoellner et al, "Optimization of High-order Non-uniform QAM Constellations". *

Also Published As

Publication number Publication date
GB2523999A (en) 2015-09-16
GB201404158D0 (en) 2014-04-23

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