A New Class of DC-Free Run-Length Limited Codes

Elie Ngomseu Mambou, Jules M. Moualeu, Theo G. Swart

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


The conventional 4B6B run-length limited (RLL) code recommended by the IEEE 802.15.7 standard for visible light communication (VLC) is memory consuming as it must be stored at both the encoder and decoder; additionally, it can only be decoded through maximum likelihood (ML) decoding which is costly in terms of computational complexity. In this paper, a new class of structured DC-free RLL code without using lookup tables is proposed. A case study of the 4B6B code that achieves better error correction performance compared to the conventional 4B6B codes in a concatenated scheme, is investigated. Through simulations and analysis, it has been established that polar codes and convolutional codes concatenated with the proposed 4B6B code outperforms most existing schemes at high signal-to-noise ratio (SNR) in terms of bit-error rate (BER) and frame-error rate (FER). At a FER of, the concatenated polar codes of length 128 with the proposed 4B6B code outperforms the same structure when using the traditional 4B6B code by 0.6 dB while maintaining the same complexity for encoding and decoding processes.

Original languageEnglish
Title of host publicationPan-African Artificial Intelligence and Smart Systems - Second EAI International Conference, PAAISS 2022, Proceedings
EditorsTelex Magloire Ngatched Nkouatchah, Isaac Woungang, Jules-Raymond Tapamo, Serestina Viriri
PublisherSpringer Science and Business Media Deutschland GmbH
Number of pages10
ISBN (Print)9783031252709
Publication statusPublished - 2023
Event2nd International Conference on Pan-African Intelligence and Smart Systems, PAAISS 2022 - Dakar, Senegal
Duration: 2 Nov 20224 Nov 2022

Publication series

NameLecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST
Volume459 LNICST
ISSN (Print)1867-8211
ISSN (Electronic)1867-822X


Conference2nd International Conference on Pan-African Intelligence and Smart Systems, PAAISS 2022


  • DC-free
  • Look-up tables
  • Maximum likelihood decoding
  • Polar codes
  • Run-length limited codes
  • Visible light communication

ASJC Scopus subject areas

  • Computer Networks and Communications


Dive into the research topics of 'A New Class of DC-Free Run-Length Limited Codes'. Together they form a unique fingerprint.

Cite this