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Optimized Hybrid CLDNN Architecture with Enhanced Temporal-Spatial Feature Extraction for Robust Automatic Modulation Classification in Cognitive Radio Networks Alifi, Daryan Pratama; Dinata, Hane Yorda; Suranegara, Galura Muhammad; Ichsan, Ichwan Nul
Journal of Computer Science, Information Technology and Telecommunication Engineering Vol 7, No 1 (2026)
Publisher : Universitas Muhammadiyah Sumatera Utara, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/jcositte.v7i1.28935

Abstract

Automatic Modulation Classification (AMC) is a pivotal technology for efficient spectrum management in future cognitive radio networks. While Deep Learning has advanced the field, standard Convolutional Neural Networks (CNN) often struggle to capture long-term temporal dependencies in signals affected by fading. This study proposes an Optimized Hybrid CLDNN architecture that integrates a "Wide-Kernel" CNN (k=7) for enhanced spatial feature extraction and a "High-Capacity" LSTM (100 units) for robust temporal modeling. Experimental validation using the RadioML 2016.10a dataset demonstrates that the proposed optimizations yield significant performance gains. Specifically, the model achieves a classification accuracy of 84.5% at 0 dB SNR, outperforming standard baselines in the critical transition regime. Furthermore, it reaches a peak accuracy of 92.4% at high SNR (+18 dB). A notable finding is the reduction of inter-class confusion between 16-QAM and 64-QAM, where the misclassification rate is suppressed to approximately 15%, confirming the architecture's effectiveness in resolving hierarchical modulation ambiguities in dynamic wireless environments.
Co-Authors A.A. Ketut Agung Cahyawan W Abd. Rasyid Syamsuri Afina Carmelya, Anindya Agnesia, Gisella Agustin, Sarah Ahmad Fauzi Ahmad Fauzi Alifi, Daryan Pratama Ash Shiddiq, Reza Nurfaudzan Avia Aulia Faridah, Tsabitah Basuki, Akbari Indra Dani Prasetyo Adi, Puput Dewi Dewi, Tarisa Citra Dianti, Palda Puspita Diky Zakaria Dinata, Hane Yorda Dwi Wahyu Lestariningsih Dwitami, Ghalda Azzahra Elysa Nensy Irawan Endah Setyowati Endah Setyowati Fadhila, Esa Noer Fadillah, Khoerunnisa Nur Faudzan, Muhammad Iqbal Fauzi Ahmad Muda Fauzi, Sadam Fauziyah Rhaudhatul Jannah Fujiyanti, Vina Gumelar, Ega Restu Hadi Putri, Dewi Indriati Hafiyyan Hamdani, Nizar Alam Helfy Susilawati Ichwan Ichwan Nul Ichsan Istiqomah, Mutia Jamilah, Nur Asy-Syifa Jannah, Fauziyah Rhaudhatul Jayadinata, Asep Kurnia Kheqal, Abdul Laili, Adisty Nurrahmah Larasati, Sifa Liptia Venica Maranatha, Jojor Renta Meiliya Cahya Yustina Mirza Etnisa Haqiqi, Mokhamamad Muhammad Gani Baihaqi Darussalam Muhammad Husni Muttaqin Nikawanti, Gia Paramaputra, Arya Pandya Pebriyanti, Cahyani Perkasa, Aldewo Dillon Praptawilaga, Muhamad Fadly Rizqy Pratama, Hafiyyan Putra Pratama, Herdi Rizky Putri, Adhwa Alifia Putri, Chairunisa Rahma Putri, Nova Nurul Rahman, Fadhila Dwi Restyasari, Nissa Reza Nurfaudzan Ashsiddiq Sanada, Pratiwi Satyawan, Arief Suryadi Subagja, Banda Suprih Widodo, Suprih Suryadi Satyawan, Arief Syaifullah, Muhammad Wildan Syifaul Fuada Ulfa, Husnul Uli Sitinjak, Domma Vormes Gema Merdeka winda pratiwi Yovanka, Diva Nuranty Yunita Sari Zaelani, Cahya