Journals

• A. P. Chrysologou, N. D. Chatzidiamantis, A. -A. A. Boulogeorgos and Z. Ding, “On the Reliability and Security of Ambient Backscatter Uplink NOMA Networks,” in IEEE Transactions on Vehicular Technology, vol. 75, no. 3, pp. 4289-4306, March 2026
• G. D. Chondrogiannis, A. P. Chrysologou, A. -A. A. Boulogeorgos, N. D. Chatzidiamantis and H. Haas, “Optical RIS-Enabled Multiple Access Communications,” in IEEE Transactions on Green Communications and Networking, vol. 10, pp. 1068-1080, 2026
• A. P. Chrysologou, N. D. Chatzidiamantis and G. K. Karagiannidis, “Ergodic Rate and Fairness Analysis of Uplink RSMA With Randomly Deployed Users,” in IEEE Wireless Communications Letters, vol. 14, no. 11, pp. 3764-3768, Nov. 2025
• A. Karakoulakis, T. K. Oikonomou, D. Tyrovolas, S. A. Tegos, N. D. Chatzidiamantis and G. K. Karagiannidis, “PIXEL: A Novel Detection Algorithm for Super Constellations,” in IEEE Communications Letters, vol. 29, no. 12, pp. 2840-2844, Dec. 2025
• A. P. Chrysologou, S. A. Tegos, P. D. Diamantoulakis, N. D. Chatzidiamantis, P. C. Sofotasios and G. K. Karagiannidis, “On the Coexistence of Heterogeneous Services in 6G Networks: An Imperfection-Aware RSMA Framework,” in IEEE Transactions on Communications, vol. 72, no. 11, pp. 7152-7167, Nov. 2024
• G. D. Chondrogiannis et al., “HARQ-Assisted Satellite-Terrestrial Communications Over Generalized-K Fading,” in IEEE Communications Letters, vol. 28, no. 8, pp. 1899-1903, Aug. 2024
• K. Triaridis, C. Doumanidis, N. D. Chatzidiamantis and G. K. Karagiannidis, “MM-Net: A Multi-Modal Approach Toward Automatic Modulation Classification,” in IEEE Communications Letters, vol. 28, no. 2, pp. 328-331, Feb. 2024
• A. P. Chrysologou, P. D. Diamantoulakis, N. D. Chatzidiamantis, H. G. Sandalidis and G. K. Karagiannidis, “Next Generation Distributed Radio Access Networks With FSO Fronthauling,” in IEEE Transactions on Mobile Computing, vol. 23, no. 6, pp. 6592-6605, June 2024
•  A. P. Chrysologou, A. -A. A. Boulogeorgos and N. D. Chatzidiamantis, “When THz-NOMA Meets Holographic Reconfigurable Intelligent Surfaces,” IEEE Communication Letters, vol. 27, no. 9, pp. 2516-2520, Sept. 2023
• P. D. Diamantoulakis, N. D. Chatzidiamantis, A. L. Moustakas and G. K. Karagiannidis, “Next Generation Multiple Access: Performance Gains From Uplink MIMO-NOMA,” IEEE Open Journal of the Communications Society, vol. 3, pp. 2298-2313, 2022
• S. A. Tegos, G. K. Karagiannidis, P. D. Diamantoulakis and N. D. Chatzidiamantis, “New Results for Pearson Type III Family of Distributions and Application in Wireless Power Transfer,” IEEE Internet of Things Journal, vol. 9, no. 23, pp. 24038-24050, Dec 2022
• A. P. Chrysologou, N. D. Chatzidiamantis and G. K. Karagiannidis, “Cooperative Uplink NOMA in D2D Communications,” IEEE Communication Letters, vol. 26, no. 11, pp. 2567-2571, Nov. 2022
• A. -A. A. Boulogeorgos, N. D. Chatzidiamantis, H. G. Sandalidis, A. Alexiou and M.D. Renzo, “Cascaded Composite Turbulence and Misalignment: Statistical Characterization and Applications to Reconfigurable Intelligent Surface-Empowered Wireless Systems,” IEEE Transactions Vehicular Technology, vol. 71, no. 4, pp. 3821-3836, Apr. 2022
• S. E. Trevlakis, A. -A. A. Boulogeorgos, N. D. Chatzidiamantis, and G. K. Karagiannidis,“Channel Modeling for In-Body Optical Wireless Communications,” Telecom, no. 3, pp. 136-149, 2022
• A. -A. A. Boulogeorgos, S. E. Trevlakis and N. D. Chatzidiamantis,“Optical Wireless Communications for In-Body and Transdermal Biomedical Applications,” IEEE Communications Magazine, vol. 59, no. 1, pp. 119-125, Jan 2021
• S. E. Trevlakis, A. -A. A. Boulogeorgos, N. D. Chatzidiamantis, G. K. Karagiannidis and X. Lei, “Electrical vs Optical Cell Stimulation: A communication perspective” IEEE Access, vol. 8, pp. 192259-192269, 2020
• M. Petkovic, A. Cvetkovic, M. Narandzic, N. D. Chatzidiamantis, D. Vukobratovic and G. Karagiannidis, “Mixed RF-VLC Relaying Systems for Interference-Sensitive Mobile Applications,” IEEE Transactions on Vehicular Communications, No. 10, Vol. 69, Oct. 2020
• A. Papadopoulos, N. D. Chatzidiamantis, L. Georgiadis, “Network Coding Techniques for Primary-Secondary User Cooperation in Cognitive Radio Networks ” IEEE Transactions on Wireless Communications, vol. 19, No 6, pp. 4195-4208, June 2020.
• S. E. Trevlakis, A. -A. A. Boulogeorgos, N. D. Chatzidiamantis and George K. Karagiannidis, “All-Optical Cochlear Implants,” IEEE Transactions on Molecular, Biological and Multi-Scale Communications, Vol. 6, No. 1, May 2020
• A. -A. A. Boulogeorgos, N. D. Chatzidiamantis, and G. K. Karagiannidis, “Non-Orthogonal Multiple Access in the Presence of Phase Noise ,” IEEE Communication Letters, vol. 24, No. 5, pp. 1133-1137, 2020.
• A. Vavoulas, H. G. Sandalidis, N. D. Chatzidiamantis, Z. Xu, and G. K. Karagiannidis,“A Survey on Ultraviolet C-Band (UV-C) Communications,” IEEE Communications Surveys Tutorials, vol. 21, iss. 3, pp. 2111-2133, 2019.
• H. G. Sandalidis, N. D. Chatzidiamantis, G. D. Ntouni, and G. K. Karagiannidis, “Performance of an FSO Link using a New Mixture Composite Irradiance Model”, IET Electronics Letters, vol. 53, iss. 4, pp. 260-262, 2017
• H. G. Sandalidis, N. D. Chatzidiamantis, and G. K. Karagiannidis, “A Tractable Model for Turbulence and Misalignment Induced Fading in Optical Wireless Systems,” IEEE Communications Letters, vol. 20, no. 9, pp. 1904–1907, 2016.
• A. -A. A. Boulogeorgos, N. D. Chatzidiamantis, and G. K. Karagiannidis, “Energy Detection Spectrum Sensing Under RF imperfections,” IEEE Transactions on Communications, vol. 64, no. 7, pp. 2754–2766, 2016.
• A. -A. A. Boulogeorgos, N. D. Chatzidiamantis, and G. K. Karagiannidis, “Spectrum Sensing with Multiple Primary Users over Fading Channels,” IEEE Communications Letters, vol. 20, no. 7, pp. 1457–1460, 2016.
• P. Puri, N. D. Chatzidiamantis, P. Garg, M. Aggarwal, and G. K. Karagiannidis, “Two-Way Relay Selection in Multiple Relayed FSO Networks,” IEEE Wireless Communications Letters, vol. 4, no. 5, pp. 485–488, 2015.
• N. D. Chatzidiamantis, L. Georgiadis, H. Sandalidis and G. K. Karagiannidis, “Throughput-Optimal Link-Layer Design in Power Constrained Hybrid OW/RF Systems,” IEEE Journal on Selected Areas in Communications, vol. 33, no. 9, pp. 1972–1984, 2015.
• N. D. Chatzidiamantis, E. Matskani, L. Georgiadis, I. Koutsopoulos, L. Tassiulas, “Optimal Primary-Secondary User Cooperation Policies in Cognitive Radio Networks,”IEEE Transactions on Wireless Communications, vol. 14, No 6, pp. 3443-3455, Feb. 2015.
• K. N. Pappi, N. D. Chatzidiamantis, and G. K. Karagiannidis, “Error Performance of Multidimensional Lattice Constellations-Part II: Evaluation over Fading Channels,” IEEE Transactions on Communications, vol. 61, no. 3, pp. 1099–1110, 2013.
• K. N. Pappi, N. D. Chatzidiamantis, and G. K. Karagiannidis, Error Performance of Multidimensional Lattice Constellations-Part I: A Parallelotope Geometry Based Approach for the AWGN Channel,” IEEE Transactions on Communications, vol. 61, no. 3, pp. 1088–1098, 2013.
• D. S. Michalopoulos, N. D. Chatzidiamantis, R. Schober, and G. K. Karagiannidis, “The Diversity Potential of Relay Selection with Practical Channel Estimation,” IEEE Transactions on Wireless Communications, vol. 12, no. 2, pp. 481–493, February 2013.
• N. D. Chatzidiamantis, D. S. Michalopoulos, E. E. Kriezis, G. K. Karagiannidis, and R. Schober, “Relay Selection Protocols for Relay-Assisted Free-Space Optical Systems,” IEEE/OSA Journal of Optical Communications and Networking, vol. 5, no. 1, pp. 92–103, January 2013.
• M. Matthaiou, N. D. Chatzidiamantis, G. K. Karagiannidis, and J. A. Nossek, “ZF Detectors over Correlated K Fading MIMO Channels,” IEEE Transactions on Communications, vol. 59, no. 6, pp. 1591–1603, June 2011.
• N. D. Chatzidiamantis, A. S. Lioumpas, G. K. Karagiannidis, and S. Arnon, “Adaptive Subcarrier PSK Intensity Modulation in Free Space Optical Systems,” IEEE Transactions on Communications, vol. 59, no. 5, pp. 1368–1377, May 2011.
• N. D. Chatzidiamantis and G. K. Karagiannidis, “On the Distribution of the Sum of Gamma-Gamma Variates and Applications in RF and Optical Wireless Communications,” IEEE Transactions on Communications, vol. 59, no. 5, pp. 1298–1308, May 2011.
• N. D. Chatzidiamantis, H. G. Sandalidis, G. K. Karagiannidis, and M. Matthaiou, “Inverse Gaussian Modeling of Turbulence-induced Fading in Free-Space Optical Systems,” IEEE/OSA Journal of Lightwave Technology, vol. 29, no. 10, pp. 1590–1596, May 2011.
• M. Matthaiou, N. D. Chatzidiamantis, and G. K. Karagiannidis, “A New Lower Bound on the Ergodic Capacity of Distributed MIMO Systems,” IEEE Signal Processing Letters, vol. 18, no. 4, pp. 227–230, April 2011.
• N. D. Chatzidiamantis, G. K. Karagiannidis, and M. Uysal, “Generalized Maximum-Likelihood Sequence Detection for Photon-counting Free-Space Optical Systems,” IEEE Transactions on Communications, vol. 58, no. 12, pp. 3381–3385, December 2010.
• M. Matthaiou, N. D. Chatzidiamantis, G. K. Karagiannidis, and J. A. Nossek, “On the Capacity of Generalized-K Fading MIMO channels,” IEEE Transactions on Signal Processing, vol. 58, no. 11, pp. 5939–5944, November 2010.
• N. D. Chatzidiamantis, M. Uysal, T. A. Tsiftsis, and G. K. Karagiannidis, “Iterative Near Maximum-Likelihood Sequence Detection for MIMO Optical Wireless Systems,”IEEE/OSA Journal of Lightwave Technology, vol. 28, no. 7, pp. 1064–1070, April 2010.

Conferences

• A. P. Chrysologou, N. D. Chatzidiamantis, A. -A. A. Boulogeorgos and G. K. Karagiannidis, “Performance Analysis of Ambient Backscatter Uplink NOMA Networks,” IEEE 97th Vehicular Technology Conference (VTC2023-Spring), Florence, Italy, 2023.
• A. P. Chrysologou, A. -A. A. Boulogeorgos, N. D. Chatzidiamantis and A. Alexiou, “Outage Analysis of Holographic Surface Assisted Downlink Terahertz NOMA,” IEEE Global Communications Conference (GLOBECOM), Rio de Janeiro, Brazil, 2022
• A. -A. A. Boulogeorgos, N. Chatzidiamantis, H. G. Sandalidis, A. Alexiou and M. Di Renzo, “Performance Analysis of Multi-Reconfigurable Intelligent Surface-Empowered THz Wireless Systems,” IEEE International Conference on Communications (ICC), Seoul, Republic of Korea, 2022.
• S. A. Tegos, G. K. Karagiannidis, P. D. Diamantoulakis and N. D. Chatzidiamantis, “Nonlinear Energy Harvesting Evaluation through the Logit Pearson Distribution,” IEEE 22nd International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Lucca, Italy, 2021.
• S. E. Trevlakis, A. -A. A. Boulogeorgos and N. D. Chatzidiamantis, “Pathloss modeling for in-body optical wireless communications,” 10th International Conference on Modern Circuits and Systems Technologies (MOCAST), Thessaloniki, Greece, 2021.
• A. Papadopoulos, N. Chatzidiamantis and L. Georgiadis, “Network Coding Techniques in Cooperative Cognitive Network”, Global Information Infrastructure and Networking Symposium (GIIS 2018), October 2018, Thessaloniki, Greece.
• A. -A. A. Boulogeorgos, N. D. Chatzidiamantis, G. K. Karagiannidis, and L. Georgiadis, “Energy Detection under RF impairments for Cognitive Radio,” in Proc. IEEE International Conference on Communication Workshop (IEEE ICCW), London, United Kingdom, 2015.
• N. D. Chatzidiamantis, L. Georgiadis, H. Sandalidis and G. K. Karagiannidis, ‘An Efficient Power Constrained Transmission Scheme for Hybrid OW/RF Systems,’in Proc. IEEE International Conference on Communications (IEEE ICC), Sydney, Australia, 2014.
• E. Matskani, N. D. Chatzidiamantis, L. Georgiadis, I. Koutsopoulos, L. Tassiulas, ‘The Mutual Benefits of Primary-Secondary User Cooperation in Wireless Cognitive Networks,’ in Proc. 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt), Hammamet, Tunisia, 2014
• K. N. Pappi, N. D. Chatzidiamantis, and G. K. Karagiannidis, “A Combinatorial Geometrical Approach to the Error Performance of Multidimensional Finite Lattice Constellations,” in Proc. IEEE Wireless Communications and Networking Conference (IEEE WCNC), Paris,
  France, 2012.
• N. D. Chatzidiamantis, G. K. Karagiannidis, E. E. Kriezis, and M. Matthaiou, “Diversity Combining in Hybrid RF/FSO Systems with PSK Modulation,” in Proc. IEEE International Conference on Communications (IEEE ICC), Kyoto, Japan, 2011.
• N. D. Chatzidiamantis, H. G. Sandalidis, G. K. Karagiannidis, and S. A. Kotsopoulos, “On the Inverse-Gaussian Shadowing,” in Proc. IEEE International Conference on Communications (IEEE ICC), Kyoto, Japan, 2011.
• D. S. Michalopoulos, N. D. Chatzidiamantis, R. Schober, and G. K. Karagiannidis, “Relay Selection with Outdated Channel Estimates in Nakagami-m Fading,” in Proc. IEEE International Conference on Communications (IEEE ICC), Kyoto, Japan, 2011.
• N. D. Chatzidiamantis, D. S. Michalopoulos, E. E. Kriezis, G. K. Karagiannidis, and R. Schober, “Relay Selection in Relay-Assisted Free Space Optical Systems,” in Proc. IEEE Global Communications Conference (IEEE GLOBECOM), Houston, USA, 2011.
• M. Matthaiou, N. D. Chatzidiamantis, G. K. Karagiannidis, “On the Sum Rate of ZF Detectors over Correlated K Fading MIMO Channels,” in Proc. IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Prague, Czech Republic, 2011.
• M. Matthaiou, N. D. Chatzidiamantis, H. A. Suraweera, and G. K. Karagiannidis, “Performance Analysis of Space-Time Block Codes over Generalized-K Fading MIMO Channels,” in Proc. IEEE Swedish Communication Technologies Workshop (Swe-CTW), Stockholm, Sweden, 2011.
• D. S. Michalopoulos, N. D. Chatzidiamantis, R. Schober, and G. K. Karagiannidis, “Diversity Loss Due to Suboptimal Relay Selection,” in Proc. IEEE Global Communications Conference (IEEE GLOBECOM), Houston, USA, 2011.
• N. D. Chatzidiamantis, A. S. Lioumpas, G. K. Karagiannidis, and S. Arnon, “Optical Wireless Communications with Adaptive Subcarrier PSK Intensity Modulation,” in Proc. IEEE Global Communications Conference (IEEE GLOBECOM), Miami, USA, 2010.
• N. D. Chatzidiamantis, H. G. Sandalidis, G. K. Karagiannidis, and M. Matthaiou, “A Simple Statistical Model for Turbulence-Induced Fading in Free-Space Optical Systems,” in Proc. IEEE International Conference on Communications (IEEE ICC), Cape Town, South Africa, 2010.
• N. D. Chatzidiamantis, H. G. Sandalidis, G. K. Karagiannidis, S. Kotsopoulos, and M. Matthaiou, “New Results on Turbulence Modeling for Free-Space Optical Systems,” in Proc. International Conference on Telecommunications (ICT), Doha, Qatar, 2010.
• N. D. Chatzidiamantis, G. K. Karagiannidis, and D. S. Michalopoulos, “On the Distribution of the Sum of Gamma-Gamma Variates and Application in MIMO Optical Wireless Systems,” in Proc. IEEE Global Communications Conference (IEEE GLOBECOM), Hawaii, USA, 2009.
• N. D. Chatzidiamantis, M. Uysal, T. A. Tsiftsis, and G. K. Karagiannidis, “EM-Based Maximum-Likelihood Sequence Detection for MIMO Optical Wireless Systems,” in Proc. IEEE International Conference on Communications (IEEE ICC), Dresden, Germany, 2009.

Coauthor of the book: “Probabilities and Stochastic Processes“, Tziolas Editions

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