Data-Oriented View for Convolutional Coding with Adaptive Irregular Constellations

Mehmet Cagri Ilter, Risto Wichman, Jyri Hamalainen, Halim Yanikomeroglu, Hong Chuan Yang

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Current wireless systems offer various use-cases where conventional channel capacity focused performance criteria might not apply. Following the similar perspective, convolutional encoding can find more room due to its low complexity and low decoding delay. Besides, it has been also shown that error performance of a convolutional encoder can be improved further by using adaptive irregular constellations. A new performance measure, data-oriented approach, was recently proposed for the transmission of small data packets, i.e. mission-critical IoT applications, over fading channels. In this letter, delay performance gain resulting from convolution coding optimized irregular constellations is investigated. Then, we derive a new performance criterion based on delay and finite block length constraints. Based on this criterion, we design irregular constellations together with convolutional coding for short packet transmission.

Original languageEnglish
Article number9352771
Pages (from-to)1771-1775
Number of pages5
JournalIEEE Communications Letters
Issue number6
Early online date2021
Publication statusPublished - Jun 2021
MoE publication typeA1 Journal article-refereed


  • constellation design
  • Convolution
  • Convolutional codes
  • Decoding
  • delay outage rate
  • Delays
  • error correction coding
  • Fading channels
  • Iterative decoding
  • Signal to noise ratio
  • Small data transmission


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  • Information Harvesting

    Ilter, M.


    Project: Academy of Finland: Other research funding

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