Waveform Design of DFT-Spread WR-OFDM System for the OOB and PAPR Reduction. - Md. Najmul Hossain; Tetsuya Shimamura; Dayoung Kim; Heung-Gyoon Ryu (ICTC, 2018)

Waveform Design of Low Complexity WR-OTFS System for the OOB Power Reduction. - Md. Najmul Hossain; Yosuke Sugiura; Tetsuya Shimamura; Heung-Gyoon Ryu (WCNC Workshops, 2020)

DFT-Spread OTFS Communication System with the Reductions of PAPR and Nonlinear Degradation. - Md. Najmul Hossain; Yosuke Sugiura; Tetsuya Shimamura; Heung-Gyoon Ryu (Wirel. Pers. Commun., 2020)

Vehicle Speed Control and Security System. - Toufiq Aziz; Tarek Mahmud Faisal; Heung-Gyoon Ryu; Md. Najmul Hossain (ICEIC, 2021)

Advanced OTFS communication system with compact spectrum and power efficiency improvement. - Md. Najmul Hossain; Heung-Gyoon Ryu (Int. J. Commun. Syst., 2021)

Performance evaluation of MIMO DFT-Spread WR-OFDM system for spectrum efficiency and power efficiency. - Md. Najmul Hossain (J. Inf. Telecommun., 2022)

Dynamics of Digital Pen-Tablet: Handwriting Analysis for Person Identification Using Machine and Deep Learning Techniques. - Tahmid Hasan; Md. Abdur Rahim; Jungpil Shin 001; Satoshi Nishimura; Md. Najmul Hossain (IEEE Access, 2024)

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)

An Advanced Deep Learning Based Three-Stream Hybrid Model for Dynamic Hand Gesture Recognition. - Md. Abdur Rahim; Abu Saleh Musa Miah; Hemel Sharker Akash; Jungpil Shin 001; Md. Imran Hossain; Md. Najmul Hossain (CoRR, 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)