Low complexity joint optimization of QAM gray mapping and non-binary LDPC Coefficients
Year: 2024
Type: article
Abstract: This work presents a method to figure out all possible combinations of Gray codes necessary for the joint optimization of a non-binary LDPC code associated with high-order modulation. However, the complexity of this earch increases rapidly with the order of modulation due to the growing number of Gray codes. To overcome his limitation, we show how to reduce without any loss the number of Gray codes, thereby simplifying the complexity of the process. In this paper, we introduce all possible sets of 64-QAM (Quadrature Amplitude Modulation) Gray codes, including the construction method and the mapping approach. Then, we generalize our ork for all orders of QAM, revealing an intractable exhaustive research for QAM that may be tackled with he method we propose to reduce the sets number of Gray codes.
Institutions: Université des Sciences et de la Technologie d'Oran Mohamed Boudiaf, Centre de Recherche en Sciences et Technologies de l'Information et de la Communication, Université de Reims Champagne-Ardenne, Centre National de la Recherche Scientifique, Université de Lille, Institut d'Electronique, de Microélectronique et de Nanotechnologie, Université de Valenciennes et du Hainaut-Cambrésis, Université Polytechnique Hauts-de-France, Centrale Lille Institut
Language: English
Subfield: Computer Networks and Communications
Field: Computer Science
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4405377890