Design and Implementation of Secure CP-Less Multi-User OCDM Transceiver for 6G Wireless Communication Networks. - Md. Najmul Hossain; Raad Raad; Kottakkaran Sooppy Nisar; Shaikh Enayet Ullah; Fowzia Jabin; Sk. Tamanna Kamal; Tetsuya Shimamura; Faisel E. M. Tubbal; Suhila Abulgasem (IEEE Access, 2024)

Integrated WHT- and DFT-Based Multiuser Massive MIMO System for Secure RIS-Enabled mmWave Communications. - Md. Najmul Hossain; Md. Rakibul Islam; Sk. Tamanna Kamal; Atia Kaniz; Shaikh Enayet Ullah; Tetsuya Shimamura (IEEE Access, 2025)

Multiuser FDSS-Based DCT-Spread Massive MIMO OFDM System for Secure RIS-Assisted UAV-Enabled Networks. - Md. Najmul Hossain; Atia Kaniz; Sk. Tamanna Kamal; Shaikh Enayet Ullah; Tetsuya Shimamura (IEEE Access, 2025)

Transceiver Design of a Secure Multiuser FDSS-Based DFT-Spread OFDM System for RIS- and UAV-Assisted THz Communications. - Md. Najmul Hossain; Kottakkaran Sooppy Nisar; Tetsuya Shimamura; Md. Rakibul Islam; Sk. Tamanna Kamal; Shaikh Enayet Ullah (IEEE Open J. Commun. Soc., 2025)