Journal Papers

198. S. Kurma, K. Singh, P. K. Sharma, C.-P. Li, and T. A. Tsiftsis, "URLLC-Enabled Full-duplex Cell-Free Massive MIMO Systems with Mobility " IEEE Open Journal of the Communications Society, May. 2024.

197. R. Liu, K. Guo, X. Li, K. Dev, S. A. Khowaja,  T. A. Tsiftsis, H. Song, "RIS-Empowered Satellite-Aerial-Terrestrial Networks with PD-NOMA " IEEE Communications Surveys and Tutorials, Apr. 2024.

196. C. G. Tsinos,  A.-A A. Boulogeorgos, and T. A. Tsiftsis, "NeuroRIS: Neuromorphic-Inspired Metasurfaces" IEEE Wireless Communications Letters, Apr. 2024.

195. K. Wang, N. Qi, H. Liu, A.-A A. Boulogeorgos, T. A. Tsiftsis, M. Xiao, K.-K. Wong, "Rate-Splitting Multiple Access with Finite Blocklength and High Mobility for URLLC Transmissions" IEEE Wireless Communications Letters, Mar. 2024.

194. J. Zhu, Y. Chen, Xinyue Pei, T. Pei, X. Li, and Theodoros A. Tsiftsis, "Rate-Splitting Multiple Access with Finite Blocklength and High Mobility for URLLC Transmissions" IEEE Wireless Communications Letters, Mar. 2024.

193. M. Wu, K. Guo, X. Li, Z. Lin, Y. Wu, T. A. Tsiftsis, and Houbing Song, "Towards Modeling and Assessing the Disorientationand Misalignment Effect in Optical Wireless Nano-Networks," IEEE Transactions on Communications, Feb. 2024.

192. A.-A. A. Boulogeorgos, S. E. Trevlakis, T. A. Tsiftsis, and A. Alexiou, "Towards Modeling and Assessing the Disorientationand Misalignment Effect in Optical Wireless Nano-Networks," IEEE Journal on Selected Areas in Communications, Feb. 2024.

191. V. Sharma, R. Allu, S. K. Singh, K. Singh, T. Q. Duong, and T. A. Tsiftsis, "Robust Transmission Design in Multi-ObjectiveRIS-aided SWIPT IoT Communications," IEEE Internet of Things Journal, Feb. 2024.

190.  L. Tlebaldiyeva, S. Arzykulov, T. A. Tsiftsis, G. Nauryzbayev, "Exploiting FAS for cooperative NOMA-based full-duplex mmWave networks with imperfections," Elsevier, Ad Hoc Networks, Jan. 2024.

189. H. Liu, N. Qi, K. Wang, T. A. Tsiftsis, W. Wang, Y. Liu,  "Network Deployment with Energy Efficiency Optimization in IRS-assisted Cell-Free MIMO System," Elsevier Physical Communication, Jan. 2024.

188. X. Kang, H. Lei, L. Yang, G. Pan, T. A. Tsiftsis, and H. Liu  "Active-RIS-Aided Covert Communications in NOMA Systems With Cooperative Jamming," IEEE Transactions on Vehicular Technology, Dec. 2023.

187. K. Guo, H. Shuai, K. An, F. Zhou, T. A. Tsiftsis, X. Li, M. Wu, "Power Allocation and Performance Evaluation for NOMA-Aided Integrated Satellite-HAP-Terrestrial Networks Under Practical Limitations," IEEE Internet of Things Journal, Nov. 2023.

186. Y. Chen, Y. Li, M. Wen, D. Zhang, B. Jiao, Z. Ding, T. A. Tsiftsis, and H. V. Poor, "Next-Generation Full Duplex Networking Systems Empowered by Reconfigurable Intelligent Surfaces," IEEE Transactions on Wireless Communications, Oct. 2023, accepted for publication.

185. M. Zhu, K. Guo, Y. Ye, L. Yang, T.  A. Tsiftsis, and H. Liu, "Active RIS Aided Covert Communications for MISO-NOMA Systems," IEEE Wireless Communications Letters, Sep. 2023, accepted for publication.

184. N. Qi, Z. Su, W.-J. Wang, R. Yao, and T.  A. Tsiftsis, "Cost-Efficient Wireless Friendly Jamming and Interference Mitigation: No Pains, No Gains," IEEE Transactions on Vehicular Technology, Sep. 2023, accepted for publication.

183. K. Guo, H. Shuai, X. Li, L. Yang, T.  A. Tsiftsis, A. Nallanathan, and M. Wu, "Two-Way Satellite-HAP-Terrestrial Networks with Non-Orthogonal Multiple Access," IEEE Transactions on Vehicular Technology, vol. 73, no. 1, pp. 964-979, Jan. 2024.

182. N. I. Miridakis, T. A. Tsiftsis, P. A. Karkazis, H. C. Leligou, and F. Foukalas, "Extreme Level Crossing Rate: A New Performance Indicator for URLLC Systems," IEEE Transactions on Vehicular Technology, vol. 73, no. 1, pp. 1358-1363, Jan. 2024.

181. T. Li, R. Yao,  Y. Fan, X. Zuo, N. I. Miridakis, and T. A. Tsiftsis, "Pattern Design and Power Management for Cognitive LEO Beaming Hopping Satellite-Terrestrial Networks," IEEE Transactions on Cognitive Communications and Networking, July 2023, accepted for publication.

180. H. Lei, F. Yang, H. Liu, I. S. Ansari, K. J. Kim, and T. A. Tsiftsis, "On Secure NOMA-Aided Semi-Grant-Free Systems" IEEE Transactions on Wireless Communications, May 2023, accepted for publication.

179. R. Yao, Y. Yu, P. Wang, Y. Fan, X. Li, X. Zuo, N. Qi, N. I. Miridakis, and T. A. Tsiftsis, "Green Integrated Cooperative Spectrum Sensing for Cognitive Satellite Terrestrial Networks," IET  Communications, vol. 17, no. 14, pp. 1665-1682, Aug. 2023.

178. Q. Sun, H. Liu, S. Yan, T. A. Tsiftsis, and J. Yuan, "Joint Receive and Passive Beamforming Optimization for RIS-Assisted Uplink RSMA Systems," IEEE Wireless Communications Letters, April 2023, vol. 12, no. 7, pp. 1204-1208, July 2023.

177. L. Yang, W. Zhang, P. S. Bithas, H. Liu, M. O. Hasna, T. A. Tsiftsis, and D. W. K. Ng, "Covert Transmission and Secrecy Analysis of RS-RIS-NOMA-Aided 6G Wireless Communication Systems,"' IEEE Transactions on Vehicular Technology, vol. 72, no. 8, pp. 10659-10670, Aug. 2023.

176. H. Lei, F. Yang, I. S. Ansari, H. Liu, K. J. Kim, and T. A. Tsiftsis, "Secrecy Outage Performance Analysis for Uplink CR-NOMA Systems with Hybrid SIC,"' IEEE Internet of Things Journal, vol. 10, no. 15, pp. 13181-13195, Aug. 2023.

175. X. Li, Q. Wang, M. Zeng, Y. Liu, S. Dang, T. A. Tsiftsis, and O. A. Dobre, "Physical-Layer Authentication for Ambient Backscatter-Aided NOMA Symbiotic Systems,'' IEEE Transactions on Communication, vol. 71, no. 4, pp. 2288-2303, April 2023.

174. P. Xiao, X. Li, L. Yang, H. Liu, and T. A. Tsiftsis, "Outage Performance Analysis of RSMA-Aided Semi-Grant-Free Transmission Systems,'' IEEE Open Journal of the Communications Society, vol. 4, pp. 253-268, Jan. 2023.

173. P. Chen, H. Liu, Y. Ye, L. Yang, K. J. Kim, and T. A. Tsiftsis, "Rate-Splitting Multiple Access Aided Mobile Edge Computing with Randomly Deployed Users,'' IEEE Journal on Selected Areas in Communications, vol. 41, no. 5, pp. 1549-1565, May 2023.

172. N. I. Miridakis, T. A. Tsiftsis, R. Yao, "Zero Forcing Uplink Detection through Large-Scale RIS: System Performance and Phase Shift Design,'' IEEE Transactions on Communications, vol. 71, no. 1, pp. 569-579, Jan. 2023.

171. Z. Liu, D. Zhang, J. Guo, T. A. Tsiftsis, Y. Su, B. Davaasambuu, S. Garg, and T. Sato, "A Spatial Delay Domain-Based Prony Channel Prediction Method for Massive MIMO LEO Communications,'' IEEE Systems Journal, vol. 17, no. 3, pp. 4137-4148, Sept. 2023.

170. H. You, Z. Bai, H. Liu, T. A. Tsiftsis, K. S. Kwak, "Rate Splitting for Intelligent Reflecting Surface-Assisted CR-NOMA Systems,'' Journal of Communications and Networks, Nov. 2022.

169. H. Shuai, K. Guo, K. An, Y. Huang, T. A. Tsiftsis, and S. Zhu, "Joint Impacts of Non-ideal System Limitations On the Performance of NOMA-based SatCom Networks,'' IEEE Transactions on Vehicular Technology, vol. 72, no. 3, pp. 4091-4096, Mar. 2023.

168. M. S. Kumar, A. Dadlani, M. Moradian, A. Khonsari, and T. A. Tsiftsis, "On the Age of Status Updates in Unreliable Multi-Source M/G/1 Queueing Systems,'' IEEE Communications Letters, vol. 27, no. 2, pp. 751-755, Feb. 2023.

167. P. Liu, G. Jing, H. Liu, L. Yang, and T. A. Tsiftsis, ``Intelligent Reflecting Surface-Assisted Cognitive Radio-Inspired Rate-Splitting Multiple Access Systems,'' Digital Communications and Networks, Elsevier, Oct. 2022.

166. N. Qi, W. Wang, L. Jia, C. Li, T. A. Tsiftsis, and Mei Wang, ``Energy Efficient UAV-Relaying 5G/6G Spectrum Sharing Networks: Interference Coordination with Power Management and Trajectory Design,'' IEEE Open Journal of the Communications Society, vol. 3, pp. 1672-1687, 2022.

165. M. Ahmed, W. .U Khan, A. Ihsan, X. Li, J. Li, and T. A. Tsiftsis, ``Backscatter Sensors Communication for 6G Low-powered NOMA-enabled IoT Networks under Imperfect SIC," IEEE Systems Journal, vol. 16, no. 4, pp. 5883-5893, Dec. 2022.

164. K. J. Kim, H. Liu, M. Wen, T. A. Tsiftsis, V. Orlik, and H. V. Poor, ``QR Decomposition-based Cyclic Prefixed Single-Carrier Transmissions for Cooperative Communications: Concepts and Research Landscape," IEEE Communications Surveys and Tutorials, vol. 25, no. 1, pp. 133-155, First quarter 2023.

163. X. Li, Y. Fan, R. Yao, P. Wang, N. Qi, N. I. Miridakis, and T. A. Tsiftsis, "RSMA-Enabled Secure and Efficient Cognitive Satellite Terrestrial Networks,"' IEEE Transactions on Vehicular Technology, July 2022.

162. S. Li, L. Yang, J. Zhang, P. S. Bithas, T. A. Tsiftsis, and M.-S. Alouini, "Mixed THz/FSO Relaying Systems: Statistical Analysis and Performance Evaluation,"' IEEE Transactions on Wireless Communications,  vol. 21, no. 12, pp. 10996-11010, Dec. 2022.

161. W. Guo, Y. Zhan, T. A. Tsiftsis, and L. Yang, "Performance and Channel Modeling Optimization for Hovering UAV-Assisted FSO Links" IEEE/OPTICA PUBLISHING GROUP, Journal of Lightwave Technology, vol. 40, no. 15, pp. 4999-5012, Aug. 2022.

160. Z. Mobini, M. Mohammadi, T. A. Tsiftsis, Z. Ding, and C. Tellambura, "New Antenna Selection Schemes for Full-Duplex Cooperative MIMO-NOMA Systems" IEEE Transactions on Communications, vol. 70, no. 7, pp. 4343-4358, July 2022.

159. J. Feng, Z. Shi, G. Yang, N. I. Miridakis, S. Ma, and T. A. Tsiftsis, "Outage Performance of Cross-Packet HARQ," IEEE Wireless Communications Letters, vol. 11, no. 7, pp. 1423-1427, July 2022.

158.  X. Li, R. Yao, Y. Fan, P. Wang, N. Qi, N. I. Miridakis, and T. A. Tsiftsis, "Secure Spectrum-Energy Efficiency Tradeoff Based on Stackelberg Game in A Two-way Relay Cognitive Satellite Terrestrial Network," IEEE Wireless Communications Letters, IEEE Wireless Communications Letters, vol. 11, no. 8, pp. 1679-1683, Aug. 2022.

157. H. Liu, Z. Bai, H. Lei, G. Pan, K. J. Kim, and T. A. Tsiftsis, "A new rate splitting strategy for uplink CR-NOMA systems," IEEE Transactions on Vehicular Technology, vol. 71, no. 7, pp. 7947-7951, July 2022.

156. X. An, R. Fan, H. Hu, N. Zhang, S. Atapattu, and T. A. Tsiftsis, "Joint Task Offloading and Resource Allocation for IoT Edge Computing with Sequential Task Dependency," IEEE Internet of Things Journal, vol. 9, no. 17, pp. 16546-16561, 1 Sept.1, 2022.

155. N. I. Miridakis, Z. Shi, T. A. Tsiftsis, and G. Yang, "Extreme Age of Information for Wireless-Powered Communication Systems," IEEE Wireless Communications Letters,  vol. 11, no. 4, pp. 826-830, April 2022.

154.  N. Miridakis, T. A. Tsiftsis, G. Yang, “Non-Linear Age of Information: An Energy Efficient Receiver-Centric Approach,” IEEE Wireless Communications Letters, vol. 11, no. 3, pp. 655-659, March 2022.

153. S. Schwarz, and T. A. Tsiftsis, “Codebook Training for Trellis-Based Hierarchical Grassmannian Classification,” IEEE Wireless Communications Letters, vol. 11, no. 3, pp. 636-640, March 2022.

152. M. Wen, Q. Li, K. J. Kim, D. López-Pérez, O. A. Dobre, H. V. Poor, P. Popovski, and T. A. Tsiftsis, “Private 5G Networks: Concepts, Architectures, and Research Landscape ,” IEEE Journal of Selected Topics in Signal Processing Special Issue: Advanced Signal Processing for Local and Private 5G Networks, vol. 16, no. 1, pp. 7-25, Jan. 2022.

151. Z. Ni, J. A. Zhang, K. Yang, X. Huang, and T. A. Tsiftsis, “Multi-Metric Waveform Optimization for Multiple-Input Single-Output Joint Communication and Radar Sensing ,” IEEE Transactions on Communications, vol. 70, no. 2, pp. 1276-1289, Feb. 2022.

150. N. I. Miridakis, T. A. Tsiftsis, G. Yang, P. Karkazis, and H. Leligou, “Semi-Blind Multiuser Detection Under the Presence of Reconfigurable Intelligent Surfaces,” IEEE Wireless Communications Letters,vol. 11, no. 1, pp. 106-110, Jan. 2022.

149. T. A. Tsiftsis, C. Valagiannopoulos, H. Liu, A.-A. Boulogeorgos, and N. I. Miridakis, “Metasurface-Coated Devices: A New Paradigm for Energy-Efficient and Secure 6G Communications," IEEE Vehicular Technology Magazine, vol. 17, no. 1, pp. 27-36, March 2022.

148. K. Sharma, P. Raut, T. A. Tsiftsis, and P. Peshwe, “Cognitive D2D Finite Blocklength Transmissions with the Presence of Time-Selective Interference,” IEEE Transactions on Vehicular Technology, vol. 70, no. 11, pp. 12215-12219, Nov. 2021.

147. H. Lei, C. Zhu, K.-H. Park, W. Lei, I. S. Ansari, and T. A. Tsiftsis, “On Secure NOMA-based Terrestrial and Aerial IoT Systems,” IEEE Internet of Things Journal, IEEE Internet of Things Journal, vol. 9, no. 7, pp. 5329-5343, 1 April1, 2022.

146. W. U. Khan, F. Jameel, X. Li, M. Bilal, and T. A. Tsiftsis, “Joint Spectrum and Energy Optimization of NOMA-enabled Small-Cell Networks with QoS Guarantee,” IEEE Transactions on Vehicular Technology, vol. 70, no. 8, pp. 8337-8342, Aug. 2021.

145. Q. Si, M. Jin, T. A. Tsiftsis, N. Zhao, and X. Wang, "Cooperative SM-Based NOMA Scheme with SWIPT," IEEE Transactions on Vehicular Technology, vol. 70, no. 6, pp. 6195-6199, June 2021.

144. K. Guo, K. An, F. Zhou, T. A. Tsiftsis, G. Zheng, and S. Chatzinotas, "On the Secrecy Performance of NOMA-Based Integrated Satellite Multiple-Terrestrial Relay Networks with Hardware Impairments," IEEE Transactions on Vehicular Technology,  vol. 70, no. 4, pp. 3661-3676, April 2021.

143. U. Singh, M. R. Bhatnagar, and  T. A. Tsiftsis, "Secrecy Analysis of SSK Modulation: Adaptive Antenna Mapping and Performance Results," IEEE Transactions on Wireless  Communications, vol. 20, no. 7, pp. 4614-4630, July 2021. 

142. N. Qi, W. Wang, M. Xiao, L. Jia, S. Jin, Q. Zhu, and T. A. Tsiftsis, "A Learning-Based Spectrum Access Stackelberg Game: Friendly Jammer-Assisted Communication Confrontation,'' IEEE Transactions on Vehicular Technology, vol. 70, no. 1, pp. 700-713, Jan. 2021. 

141. N. Qi, D. Ye, T. A. Tsiftsis, R. Yao, W. Wang, and M. Wang, "Energy-efficient Full-duplex UAV Relaying Networks: Trajectory Design for Channel Model-free Scenarios,'' ETRI Journal, 43:436-446, 2021.  

140. N. I. Miridakis, T. A. Tsiftsis, and G. Yang, "Moment-based Spectrum Sensing Under Generalized Noise Channels,'' IEEE Communications Letters, vol. 25, no. 1, pp. 89-93, Jan. 2021.

139. J. Lin, G. Wang, R. Fan, Y. Zou, T. A. Tsiftsis, and C. Tellambura, "Feature-oriented channel estimation in reconfigurable intelligent surfaces assisted wireless communication systems,'' IET Communications,  vol. 14, no. 19, p. 3458 – 3463, 01 December 2020.

138. U. Singh, M. R. Bhatnagar, and  T. A. Tsiftsis, "Feedback-Based SSK Modulation: Constellation Design and Performance Results,'' IEEE Transactions on Communications, vol. 68, no. 11, pp. 6902-6917, Nov. 2020 .

137. L. Yang, X. Yan, D. B. da Costa, T. A. Tsiftsis, H.-C. Yang, and M.-S. Alouini, "Indoor Mixed Dual-Hop VLC/RF Systems Through Reconfigurable Intelligent Surfaces," IEEE Wireless Communications Letters, vol. 9, no. 11, pp. 1995-1999, Nov. 2020.

136. Y. Li, N. I. Miridakis, T. A. Tsiftsis, G. Yang, and M. Xia, "Air-to-Air Communications Beyond 5G: A Novel 3D CoMP Transmission Scheme ," IEEE Transactions on Wireless Communications, vol. 19, no. 11, pp. 7324-7338, Nov. 2020.

135. S. Wang, R. Yao, T. A. Tsiftsis, N. I. Miridakis, and N. Qi, "Signal Detection in Uplink Time-Varying OFDM Systems Using RNN with Bidirectional LSTM," IEEE Wireless Communications Letters, vol. 9, no. 11, pp. 1947-1951, Nov. 2020.

134. N. I. Miridakis, T. A. Tsiftsis, and G. Yang, "Generalized Energy Detection Under Generalized Noise Channels,'' IEEE Wireless Communications Letters, vol. 9, no. 12, pp. 2020-2024, Dec. 2020.

133. S. Atapattu, R. Fan, P. Dharmawansa, G. Wang, J. Evans, and T. A. Tsiftsis, "Reconfigurable Intelligent Surface assisted Two–Way Communications: Performance Analysis and Optimization," IEEE Transactions on Communications, vol. 68, no. 10, pp. 6552-6567, Oct. 2020.

132. L. Yang, J. Yang, W. Xie, M. O. Hasna, T. A. Tsiftsis, M. Di Renzo, "Secrecy Performance Analysis of RIS-Aided Wireless Communication Systems," IEEE Transactions on Vehicular Technology, vol. 69, no. 10, pp. 12296-12300, Oct. 2020. [Highly Cited according to Web of Science ]

131. X. Li, Q. Wang. Y. Liu, T. A. Tsiftsis, Z. Ding, and A. Nallanathan, "UAV-Aided Multi-Way NOMA Networks with Residual Hardware Impairments," IEEE Wireless Communications Letters, vol. 9, no. 9, pp. 1538-1542, Sept. 2020.

130. P. Raut, P. K. Sharma, T. A. Tsiftsis, and Y. Zou, "Power-Time Splitting-based Non-Linear Energy Harvesting in FD Short-Packet Communications," IEEE Transactions on Vehicular Technology,  vol. 69, no. 8, pp. 9146-9151, Aug. 2020. 

129. R. Yao, Y. Zhang, Q. Wu, T. A. Tsiftsis, N. Qi, X. Zuo, and S. Guo,  "A Spectrum Efficient Constellation to Simultaneously Transmit Information and Synchronization Sequence," IEEE Access, vol. 8, pp. 95442-95456, 2020.  

128. N. Qi, N. I. Miridakis, M. Xiao, T. A. Tsiftsis, R. Yao, and S. Jin,  "Traffic-aware Two-stage Queueing Communication Networks: Queue Analysis and Energy Saving," IEEE Transactions on Communications, vol. 68, no. 8, pp. 4919-4932, Aug. 2020. 

127. H. Liu, T. A. Tsiftsis, K. J. Kim, K. S. Kwak, and H. V. Poor, "Rate Splitting for Uplink NOMA with Enhanced Fairness and Outage Performance," IEEE Transactions on Wireless Communications, vol. 19, no. 7, pp. 4657-4670, July 2020.

126. N. Qi, M. Wang, W.-J. Wang, T. A. Tsiftsis, R. Yao, G. Yang, "Energy Efficient Full-duplex UAV Relaying Networks Under Load-Carry-and-Delivery Scheme," IEEE Access, vol. 8, pp. 74349-74358, 2020.

125. M.-M. Zhao, Y. Cai, M.-J. Zhao, B. Champagne, and  T. A. Tsiftsis, “Improving Caching Efficiency in Content-aware C-RAN-based Cooperative Beamforming: A Joint Design Approach,'' IEEE Transactions on Wireless Communications, vol. 19, no. 6, pp. 4125-4140, June 2020.

124. L. Tlebaldyeva, B. Maham and  T. A. Tsiftsis, “Capacity Analysis of Device-to-Device mmWave Networks Under Transceiver Distortion Noise and Imperfect CSI,'' IEEE Transactions on Vehicular Technology, vol. 69, no. 5, pp. 5707-5712, May 2020.

123. K. Guo, K. An, B. Zhang, Y. Huang, X. Tang, G. Zheng, and T. A. Tsiftsis, “Physical Layer Security for Multiuser Satellite Communication Systems with Threshold-based Scheduling Scheme,“ IEEE Transactions on Vehicular Technology, vol. 69, no. 5, pp. 5129-5141, May 2020 .

122. Q. Huang, M. Lin, J.-B. Wang, T. A. Tsiftsis, and J. Wang, “Energy Efficient Beamforming Schemes for Satellite-Aerial-Terrestrial Networks,” IEEE Transactions on Communications, vol. 68, no. 6, pp. 3863-3875, June 2020.

121. W. Zhao, G. Wang, S. Atapattu, T. A. Tsiftsis, and X. Ma, “Performance Analysis of Large Intelligent Surface Aided Backscatter Communication Systems,“ IEEE Wireless Communications Letters, vol. 9, no. 7, pp. 962-966, July 2020 .

120. W. Zhao, G. Wang, S. Atapattu, T. A. Tsiftsis, and C. Tellambura, “Is Backscatter Link Stronger than Direct Link in  Reconfigurable Intelligent Surface-Assisted  System?,“ IEEE Communications Letters, vol. 24, no. 6, pp. 1342-1346, June 2020.

119. Z. Shi, H. Wang, Y. Fu, G. Yang, S. Ma, F. Hou, and T. A. Tsiftsis, “Zero-Forcing Based Downlink Virtual MIMO-NOMA Communications in IoT Networks,“  IEEE Internet of Things Journal, vol. 7, no. 4, pp. 2716-2737, April 2020. 

118. C. Valagiannopoulos, T. A. Tsiftsis, and V. Kovanis, “Metasurface-Enabled Interference Mitigation in Visible Light Communication Architectures,“ IOP Journal of Optics, vol. 21, no.11, Oct. 2019.

117. X. Chen, M. Wen, Q. Li, Y.-C. Wu, and T. A. Tsiftsis, “Dual-Polarized Spatial Media-Based Modulation,” IEEE Journal on Selected Topics in Signal Processing, Special Issue on Index Modulation for Future Wireless Networks, vol. 13, no. 6, pp. 1258-1269, Oct. 2019.

116. N. I. Miridakis, T. A. Tsiftsis, and G. Yang, ``Leveraging on the Impact of Imperfect Channel Estimation for Relaying Systems,'' IEEE Access, vol. 7, pp. 127809-127815, 2019.

115. R. Yao, Y. Zhang, S. Wang, N. Qi, N. I. Miridakis and T. A. Tsiftsis, ``Deep Neural Network Assisted Approach for Antenna Selection in Untrusted Relay Networks,'' IEEE Wireless Communications Letters, vol. 8, no. 6, pp. 1644-1647, Dec. 2019.

114. M. Wen, B. Zheng, K. J. Kim, M. D. Renzo,  T. A. Tsiftsis, K.-Cheng Chen, and N. Al-Dhahir, “A Survey on Spatial Modulation in Emerging Wireless Systems: Research Progresses and Applications,” IEEE Journal on Selected Areas in Communications, accepted for publication, July 2019.  [Highly Cited according to Web of Science ]

113. S. Arzykulov, G. Nauryzbayev, T. A. Tsiftsis and B. Maham, “Performance Analysis of Underlay Cognitive Radio Non-Orthogonal Multiple Access Networks,” IEEE Transactions on Vehicular Technology, vol. 68, no. 9, pp. 9318-9322, Sept. 2019.

112. S. Zheng, T. A. Tsiftsis , W. Tan, G. Yang, S. Ma, and M.-S. Alouini, “Effective Capacity for Renewal Service Processes with Applications to HARQ Systems,“ IEEE Transactions on Communications, vol. 67, no. 9, pp. 6556-6571, Sept. 2019.

111. L. Tleabaldyeva, B. Maham, and T. A. Tsiftsis, “Device-to-Device mmWave Communication in the Presence of Interference and Hardware Distortion Noises,“ IEEE Communications Letters, vol. 23, no. 9, pp. 1607-1610, Sept. 2019. 

110.  M. J. C. Sanchez, A. Segneri, S. Kosmopoulos,  Q. Zhu, T. A. Tsiftsis, A. Georgiadis, and G. Goussetis, “Novel Data Pre-distorter for APSK Signals in Solid-State Power Amplifiers,“ IEEE Transactions on Circuits and Systems I, vol. 66, no. 10, pp. 4044-4054, Oct. 2019. 

109.  Y. Jiang, Y. Zou, H. Guo, T. A. Tsiftsis, M. R. Bhatnagar, R. C. de Lamare, and Y.-D. Yao, “Joint Power and Bandwidth Allocation for Energy-Efficient Heterogeneous Cellular Networks,“ IEEE Transactions on Communications, vol. 67, no. 9, pp. 6168-6178, Sept. 2019.

108. S. Arzykulov, G. Nauryzbayev, T. A. Tsiftsis, B. Maham, and M. Abdallah, “On the Outage of Underlay CR-NOMA Networks with Detect-and-Forward Relaying,” IEEE Transactions on Cognitive Communications and Networking, vol. 5, no. 3, pp. 795-804, Sept. 2019.

107. N. I. Miridakis, T. A. Tsiftsis, and H.-M. Wang, “Zero Forcing Detection For Short Packet Transmission Under Channel Estimation Errors,” IEEE Transactions on Vehicular Technology,  vol. 68, no. 7, pp. 7164-7168, July 2019.

106. H. Guo, Z. Yang, Y. Zou, T. A. Tsiftsis, M. R. Bhatangar, and R. C. De Lamare, "Secure Beamforming for Cooperative Wireless-Powered Networks with Partial CSI," IEEE Internet of Things Journal, vol. 6, no. 4, pp. 6760-6773, Aug. 2019.

105. H. Wu, Y. Zou, W. Cao, Z. Chen, T. A. Tsiftsis, M. R. Bhatnagar, and R. De Lamare, "Impact of Hardware Impairments on Outage Performance of Hybrid Satellite-Terrestrial Relay Systems," IEEE Access, vol. 7, pp. 35103-35112, 2019. 

104. H.-M. Wang, X. Zhang, Q. Yang, and T. A. Tsiftsis, "Secure Users Oriented Downlink MISO NOMA," IEEE Journal of Selected Topics in Signal Processing, Special Issue on Signal Processing Advances for Non-Orthogonal Multiple Access in Next Generation, vol. 13, no. 3, pp. 671-684, June 2019.

103. K. J. Kim, M. Di Renzo, H. Liu, T. A. Tsiftsis, P. V. Orlik, and H. V. Poor, "Distributed Cyclic Delay Diversity Systems with Spatially Distributed Interferers," IEEE Transactions on Wireless Communications, accepted for publication, vol. 18, no. 4, pp. 2066-2079, April 2019. 

102. A. Basgumus, M. Namdar, and T. A. Tsiftsis, "Broadcast Cognitive Radio with Dirty Paper Coding over Nakagami-m Fading Channel," Advances in Electrical and Computer Engineering, vol.19, no.1, pp.3-8, 2019.

101. L. Tlebaldiyeva, T. A. Tsiftsis and B. Maham, "Performance Analysis of Improved Energy Detector with Hardware Impairments for Accurate Spectrum Sensing,"  IEEE Access, vol. 7, pp. 13927-13938, Jan. 2019. 

100. N. Qi, M. Xiao, T. A. Tsiftsis, R. Yao, and S. Mumtaz, "Energy Efficient Two-tier Network-Coded Relaying Systems Considering Processing Energy Costs,'' IEEE Transactions on Vehicular Technology, vol. 68, no. 1, pp. 999-1003, Jan. 2019.

99. N. I. Miridakis and T. A. Tsiftsis, "A New Interweave Cognitive Radio Scheme for Out-band Energy Harvesting Systems," IEEE Access, vol. 6, pp. 72225-72232, 2018. 

98. K. Le and T. A. Tsiftsis, "Wireless Security Employing Opportunistic Relays and an Adaptive Encoder Under Outdated CSI and Dual-Correlated Nakagami-m Fading," IEEE Transactions on Communications, vol. 67, no. 3, pp. 2405-2419, Mar. 2019.

97. F. Wei, W. Chen, Y. Wu, J. Ma, and T. A. Tsiftsis, "Message-Passing Receiver Design for Joint Channel Estimation and Data Decoding in Uplink Grant-Free SCMA Systems," IEEE Transactions on Wireless Communications, vol. 18, no. 1, pp. 167-181, Jan. 2019.

96. K. Guo, M. Lin, B. Zhang, W.-P. Zhu, J.-B. Wang, and T. A. Tsiftsis, "On the Performance of LMS Communication with Hardware Impairments and Interference," IEEE Transactions on Communications, vol. 67, no. 2, pp. 1490-1505, Feb. 2019.

95. S. Arzykulov, T. A. Tsiftsis, G. Nauryzbayev, and M. Abdallah, "Outage Performance of Cooperative Underlay CR-NOMA with Imperfect CSI," IEEE Communications Letters, vol. 23, no. 1, pp. 176-179, Jan. 2019.

94. A. Rahmati, K. Raahemifar, T. A. Tsiftsis, A. Anpalagan, and P. Azmi, "OFDM Signal Recovery in Deep Faded Erasure Channel," IEEE Access, accepted for publication, vol. 7, pp. 38798-38812, 2019.

93. N. Agrawal, P. K. Sharma, and T. A. Tsiftsis, "Multi-hop DF Relaying Based PLC System with Rayleigh Fading and Bernoulli-Laplacian Noise," IEEE Systems Journal, vol. 13, no. 1, pp. 357-364, Mar. 2019.

92. N. I. Miridakis, T. A. Tsiftsis and G. C. Alexandropoulos, "MIMO Underlay Cognitive Radio: Optimized Power Allocation, Effective Number of Transmit Antennas and Harvest-Transmit Tradeoff," IEEE Transactions on Green Communications and Networking, vol. 2, no. 4, pp. 1101-1114, Dec. 2018.

91. R. Yakupov, and T. A. Tsiftsis “Outage Probability of Non-Orthogonal Multiple Access with Partial Relay Selection Over Nakagami-m Fading Channels,” Physical Communication, Elsevier, vol. 29, pp. 276-287, Aug. 2018. 

90. Z. Xue, J. Wang, G. Ding, Q. Wu, Y. Lin, and T. A. Tsiftsis, “Device-to-Device Communications Underlying UAV-Supported Social Networking,” IEEE Access, vol. 6, pp. 34488-34502, Dec. 2018.

89. K.-W. Huang, H.-M. Wang, T. A. Tsiftsis, and M. H. Lee, "Base Station Cooperation in Millimeter Wave Cellular Networks: Performance Enhancement of Cell-Edge Users," IEEE Transactions on Communications, vol. 66, no. 11, pp. 5124-5139, Nov. 2018.

88. M. Namdar, A. Basgumus, T. A. Tsiftsis, and A. Altuncu,“On the Outage and BER Performances of Indoor Relay-Assisted Hybrid RF/VLC Systems,” IET Communications, vol. 12, no. 17, pp. 2104-2109, 30.10.2018.

87. N. I. Miridakis, T. A. Tsiftsis, D. D. Vergados, and A. Michalas, "All Cognitive MIMO: A New Multiuser Detection Approach with Different Priorities," IEEE Transactions on Wireless Communications, vol. 17, no. 8, pp. 5148-5161, Aug. 2018.

86. V. Palliyembil, J. V. K. P. Muthuchidamdaranathan, and T. A. Tsiftsis "Capacity and Outage Probability Analysis of Asymmetric Dual-Hop RF-FSO Communication Systems," IET Communications, vol. 12, no. 16, pp. 1979-1983, Sept. 2018.

85. S. Arzykulov, G. Nauryzbayev, T. A. Tsiftsis, and M. Abdallah, "On the Performance of Wireless Powered Cognitive Relay Network with Interference Alignment," IEEE Transactions on Communications, vol. 66, no. 9, pp. 3825-3836, Sept. 2018.

84. T. Mekkawy, R. Yao, T. A. Tsiftsis, Fei Xu, and L. Yanan, "Joint Beamforming Alignment with Optimal Power Allocation for A Two Way Untrusted Relay Network," IEEE Transactions on Information, Forensics and Security, accepted for publication, March 2018.

83. J. Lopez-Fernandez, E. Martos-Naya, F.J. Lopez-Martinez and T. A. Tsiftsis, "On the Distribution of the Received Signal Power in Mobile Networks: a Moment-Based Approach," IEEE Transactions on Vehicular Technology, vol. 67, no. 8, pp. 7754-7758, Aug. 2018.

82. Y. Xu, H.-M. Wang, K.-W. Huang, Z. Han, and T. A. Tsiftsis, "Cooperative Secure Transmission by Exploiting Social Ties in Random Networks," IEEE Transactions on Communications, vol. 66, no. 8, pp. 3610-3622, Aug. 2018.

81. R. Yao, Y. Lu, T. A. Tsiftsis, N. Qi, T. Mekkawy, and F. Xu, "Secrecy Rate-Optimum Energy Splitting for an Untrusted and Energy Harvesting Relay Network," IEEE Access, vol. 6, pp. 19238-19246, Dec. 2018.

80. G. Liu, R. Wang, H. Zhang, W. Kang, T. A. Tsiftsis, V. C.M. Leung, "Super-Modular Game Based User Scheduling and Power Allocation for Energy-Efficient NOMA Network," IEEE Transactions on Wireless Communications. vol. 17, no. 6, pp. 3877-3888, June 2018.

79. F. Foukalas and T. A. Tsiftsis, ``Energy Efficient Power Allocation for Carrier Aggregation in Heterogeneous Networks: Partial Feedback and Circuit Power Consumption,'' IEEE Transactions on Green Communications and Networking, vol. 2, no. 3, pp. 623-634, Sept. 2018.

78. H.-M. Wang, K.-W. Huang, and T. A. Tsiftsis, "Multiple Antennas Secure Transmission under Pilot Spoofing and Jamming Attack, " IEEE Journal on Selected Areas in Communications, Special Issue on Physical Layer Security for 5G Wireless Networks, vol. 36, no. 4, pp. 860-876, April 2018.

77. N. I. Miridakis, M. Xia, and T. A. Tsiftsis, "Optimal Power Allocation and Active Interference Mitigation for Spatial Multiplexed MIMO Cognitive Systems," IEEE Transactions on Vehicular Technology, vol. 67, no. 4, pp. 3349-3360, April 2018.

76. J. Bao, Z. Ma, M. Xiao, T. A. Tsiftsis, and Z. Zhu, "Bit-Interleaved Coded SCMA With Iterative Multiuser Detection: Multidimensional Constellations Design," IEEE Transactions on Communications, vol. 66, no. 11, pp. 5292-5304, Nov. 2018. 

75. N. I. Miridakis and T. A. Tsiftsis, "Zero-Forcing Successive Decoding under Nakagami-m Fading Channels," Wireless Personal Communications, Springer, vol. 99, no. 1, pp.273-282  Mar. 2018.

74. H. Wang, J. Wang, G. Ding, L. Wang, T. A. Tsiftsis, and P. K. Sharma, "Resource Allocation for Energy Harvesting-Powered D2D Communication Underlaying UAV-Assisted Networks," IEEE Transactions on Green Communications and Networking, vol. 2, no. 1, pp. 14-24, March 2018.

73. G. Ding, Q. Wu, L. Zhang, Y. Lin, T. A. Tsiftsis, and Y.-D. Yao, "An Amateur Drone Surveillance System Based on Cognitive Internet of Things," IEEE Communications Magazine, vol. 56, no. 1, pp. 29-35, Jan. 2018. [Highly Cited according to Web of Science ]

72. L. Gahane, P. K. Sharma, N. Varshney, T. A. Tsiftsis, and P. Kumar, "An Improved Energy Detector for Mobile Cognitive Users over Generalized Fading Channels," IEEE Transactions on Communications, vol. 66, no. 2, pp. 534-545, Feb. 2018.

71. H. Liu, K. J. Kim, T. A. Tsiftsis, K. S. Kwak, and H. V. Poor, "Secrecy Performance of Finite-Sized Cooperative Full-Duplex Relay Systems with Unreliable Backhauls," IEEE Transactions on Signal Processing, vol. 65, no. 23, pp. 6185-6200, 1 Dec.1, 2017. 

70. A. Rahmati, K. Raahemifar, A. Anpalagan, T. A. Tsiftsis, P. Azmi, and N. I. Miridakis, "Superposition Modulation based Cooperation for Oversampled OFDM Signals," IEEE Transactions on Communications, vol. 65, no. 11, pp. 4791-4802, Nov. 2017.

69. N. Qi, M. Xiao, T. A. Tsiftsis, M. Skoglund, and L. Li, "Efficient Coded Cooperative Networks with Energy Harvesting and Transferring," IEEE Transactions on Wireless Communications, vol. 16, no. 10, pp. 6335-6349, Oct. 2017.

68. S. Stefanatos, F. Foukalas and T. A. Tsiftsis, "Low Complexity Resource Allocation for Massive Carrier Aggregation," IEEE Transactions on Vehicular Technology, accepted for publication, vol. 66, no. 10, pp. 9614-9619, Oct. 2017.

67. C. Tsinos, F. Foukalas, and T. A. Tsiftsis, "Resource Allocation for Licensed/Unlicensed Carrier Aggregation MIMO Systems, " IEEE Transactions on Communications, accepted for publications, vol. 65, no. 9, pp. 3765-3779, Sept. 2017.

66. M. Sayed, T. A. Tsiftsis, and N. Al-Dhahir, "On the Diversity of Hybrid Narrowband-PLC/Wireless Communications for Smart Grids," IEEE Transactions on Wireless Communications, vol. 16, no. 7, pp. 4344-4360, July 2017.

65. G. Ding, F. Wu, S. Tang, Q. Wu, F. Song, A. V. Vasilakos, and T. A. Tsiftsis, "Robust Online Spectrum Prediction with Incomplete and Corrupted Historical Observations, " IEEE Transactions on Vehicular Technology, vol. 66, no. 9, pp. 8022-8036, Sept. 2017.

64. N. Miridakis and T. A. Tsiftsis, G. C. Alexandropoulos, and M. Debbah, "Simultaneous Spectrum Sensing and Data Transmission for Cognitive Spatial Multiplexing Systems," IEEE Transactions on Wireless Communications, vol. 16, no. 5, pp. 3313-3327, May 2017.

63. P. C. Sofotasios, A. Bagheri, T. A. Tsiftsis, S. Freear, A. Shahzadi, and M. Valkama, "A Comprehensive Framework for Spectrum Sensing in Non-Linear and Generalized Fading Conditions, " IEEE Transactions on Vehicular Technology, vol. 66, no. 10, pp. 8615-8631, Oct. 2017.

62. H. G. Sandalidis, A. Vavoulas, T. A. Tsiftsis, and N. Vaiopoulos, "Illumination, Data Transmission and Energy Harvesting: The Threefold Advantage of VLC, " OSA Applied Optics, 56, 3421-3427 (2017).

61. N. I. Miridakis and T. A. Tsiftsis, "EGC Reception for FSO Systems under Mixture-Gamma Fading Channels and Pointing Errors, " IEEE Communications Letters, vol. 21, no. 6, pp. 1441-1444, June 2017.

60. J. Qiu, G. Ding, Q. Wu, Z. Qian, T. A. Tsiftsis, Z. Du, and Y. Sun, "Hierarchical Resource Allocation Framework for HyperDense Small Cell Networks, " IEEE Access.

59. N. Miridakis, T. A. Tsiftsis and C. Rowell, "Distributed Spatial Multiplexing Systems with Hardware Impairments and Imperfect Channel Estimation under Rank-1 Rician Fading Channels, " IEEE Transactions on Vehicular Technology, vol. 66, no. 6, pp. 5122-5133, June 2017.

58. M. Tang, G. Ding, Q. Wu, Z. Xue and T. A. Tsiftsis, "A Joint Tensor Completion and Prediction Scheme for Multi-Dimensional Spectrum Map Construction," IEEE Access, vol. 4, pp. 8044-8052, 2016.

57. N. I. Miridakis and T. A. Tsiftsis, "On the Joint Impact of Hardware Impairments and Imperfect CSI on Successive Decoding," IEEE Transactions on Vehicular Technology, vol. 66, no. 6, pp. 4810-4822, June 2017.

56. S. Arzykulov, G. Nauryzbayev and T. A. Tsiftsis, "Underlay Cognitive Relaying System Over $alpha $ - $mu $ Fading Channels," IEEE Communications Letters, vol. 21, no. 1, pp. 216-219, Jan. 2017.

55. N. I. Miridakis, T. A. Tsiftsis, G. C. Alexandropoulos and M. Debbah, "Green Cognitive Relaying: Opportunistically Switching Between Data Transmission and Energy Harvesting," IEEE Journal on Selected Areas in Communications, vol. 34, no. 12, pp. 3725-3738, Dec. 2016.

54. Ν. Papanikolaou, M. Loupis, Ν. Spiropoulos, Ε. Mitronikas, Ε. Τatakis, C. Christodoulou, V. Zarikas, and T. A. Τsiftsis, "On the investigation of energy saving aspects of commercial lifts," Energy Efficiency, Springer, doi:10.1007/s12053-016-9495-y [This publication was a deliverable of a national project]

53. N. Qi, M. Xiao, T. A. Tsiftsis, M. Skoglund, P. L. Cao and L. Li, "Energy-Efficient Cooperative Network Coding with Joint Relay Scheduling and Power Allocation," IEEE Transactions on Communications, vol. 64, no. 11, pp. 4506-4519, Nov. 2016.

52. A. Galanopoulos, F. Foukalas and T. A. Tsiftsis, "Efficient Coexistence of LTE With WiFi in the Licensed and Unlicensed Spectrum Aggregation," IEEE Transactions on Cognitive Communications and Networking, vol. 2, no. 2, pp. 129-140, June 2016.

51. P. Kumar Sharma, A. Bansal, P. Garg, T. Tsiftsis and R. Barrios, "Relayed FSO communication with aperture averaging receivers and misalignment errors," IET Communications, vol. 11, no. 1, pp. 45-52, 1 5 2017.

50. X. Jiang, C. Zhong, X. Chen, T. Q. Duong, T. A. Tsiftsis and Z. Zhang, "Secrecy Performance of Wirelessly Powered Wiretap Channels," IEEE Transactions on Communications, vol. 64, no. 9, pp. 3858-3871, Sept. 2016.

49. I. Dey, T. A. Tsiftsis and C. Rowell, "Achievable Channel Cutoff Rate and Bandwidth Efficiency in Indoor Wireless Environments," IEEE Transactions on Vehicular Technology, vol. 65, no. 12, pp. 10074-10079, Dec. 2016.

48. H. Mosavat-Jahromiy, B. Maham, T. A. Tsiftsis, "Maximizing Spectral Efficiency for Energy Harvesting-Aware WBAN," IEEE Biomedical and Health Informatics, vol. 21, no. 3, pp. 732-742, May 2017. 

47. T. A. Tsiftsis, F. Foukalas, G. K. Karagiannidis, and T. Khattab, "On the Higher-Order Statistics of the Channel Capacity in Dispersed Spectrum Cognitive Radio Systems over Generalized Fading Channels," IEEE Transactions on Vehicular Technology, vol. 65, no. 5, pp. 3818-3823, May 2016.

46. G. Ding, J. Wang, Q. Wu, Y.-D. Yao, F. Song, and T. A. Tsiftsis, "Cellular-Base-Station Assisted Device-to-Device Communications in TV white space," IEEE Journal on Selected Areas in Communications, vol. 34, no. 1, pp. 107-121, Jan. 2016.

45. A. Vavoulas, H. G. Sandalidis, T. A. Tsiftsis, and N. Vaiopoulos, "Coverage Aspects of Indoor VLC Networks," IEEE/OSA Journal of Lightwave Technology, vol.33, no.23, pp.4915-4921, December 2015.

44. G. Zhu, C. Zhong, H. A. Suraweera, G. K. Karagiannidis, Z. Zhang, and T. A. Tsiftsis, "Wireless Information and Power Transfer in Relay Systems with Multiple Antennas and Interference," IEEE Transactions on Communications, vol.63, no.4, pp.1400,1418, April 2015.

43. T. Tsiftsis, P. C. Sofotasios, N. Papanikolaou, and M. Loupis, "On the Deployment of a Wireless Sensor Network in Dispersed Renewable Energy Sources for Increasing Efficiency of Power Distribution Networks," Journal of Modern Power Systems and Clean Energy, Springer, June 2015.

42. P. C. Sofotasios, T. A. Tsiftsis, Y. A. Brychkov, S. Freear, M. Valkama, and G. K. Karagiannidis, "Analytic Expressions and Bounds for Special Functions and Applications in Communication Theory," IEEE Transactions on Information Theory, vol. 60, no. 12, pp. 7798-7823, Dec. 2014.

41. M. Fareed, M. Uysal and T. A. Tsiftsis, "Error Rate Performance Analysis of Cooperative OFDMA System with Decode-and-Forward Relaying," IEEE Transactions on Vehicular Technology, vol. 63, no.5, pp. 2216-2223, June 2014.

40. F. Yang, J. Cheng, and T. A. Tsiftsis, "Free-Space Optical Communication with Nonzero Boresight Pointing Errors," IEEE Transactions on Communications, vol. 62, no.2, pp. 713-725, February 2014.

39. F. R. V. Guimaraes, D. B. da Costa, M. Benjillali, T. A. Tsiftsis, and G. K. Karagiannidis, "Cooperative Spectrum Sharing Systems with Relay Selection in the Presence of Multiple Primary Receivers," IET Communications, vol. 8, no. 4, pp. 546 – 553, March 2014.

38. F. R. V Guimaraes, D. B. da Costa, T. A. Tsiftsis, C. C. Cavalcante, and G. K. Karagiannidis, "Multi-User and Multi-Relay Cognitive Radio Networks Under Spectrum Sharing Constraints," IEEE Transactions on Vehicular Technology, vol.63, no.1, pp.433-439, Jan. 2014.

37. T. A. Tsiftsis, N. Papanikolaou, M. Loupis and V. Zarikas, "On the Application of Cooperative Communications in Renewable Energy Sources for Maximizing the Reliability of Power Distribution Networks," Journal of Green Engineering, River Publishers, vol. 3, no. 4, July 2013.

36. H. Phan, T. Q. Duong, H.-J Zepernick, T. A. Tsiftsis, "Distributed Orthogonal Space-Time Block Coding in Wireless Relay Networks," IET Communications, vol. 7, no. 16, pp. 1825 - 1835, November 2013.

35. P. C. Sofotasios, E. Rebeiz, L. Zhang, T. A. Tsiftsis, S. Freear, and D. Cabric, "Energy Detection-Based Spectrum Sensing over κ-μ and κ-μ Extreme Fading Channels," IEEE Transactions on Vehicular Technology, vol.62, no.3, pp.1031-1040, March 2013.

34. T. Q. Duong, D.B. da Costa, T. A. Tsiftsis, C. Zhong, and A. Nallanathan,"Outage and Diversity of Cognitive Relaying Systems under Spectrum Sharing Environments in Nakagami-m Fading," IEEE Communications Letters, vol. 16, no. 12, pp. 2075 - 2078, December 2012.

33. T. Q. Duong, H. A. Suraweera, T. A. Tsiftsis, H.-J. Zepernick, and A. Nallanathan, "Keyhole Effect in Dual-Hop MIMO AF Relay Transmission with Space-Time Block Codes," IEEE Transactions on Communications, vol. 60, no. 12, pp.3683-3693, December 2012.

32. H. Ding, J. Ge, D.B. da Costa and T. A. Tsiftsis, "A Novel Distributed Antenna Selection Scheme for Fixed-Gain Amplify-and-Forward Relaying Systems," IEEE Transactions on Vehicular Technology, vol.61, no.6, pp.2836-2842, July 2012.

31. T. A. Tsiftsis, K. J. Kim, and K. S. Kwak, "Cooperative wireless personal area network systems with partial best relay selection," Transactions on Emerging Telecommunications Technologies, vol. 23, no. 2, pages 133–136, March 2012.

30. K. J. Kim, Yongzhao Li and T. A. Tsiftsis, "On the Performance of Cyclic Prefixed Single-Carrier Cellular Systems in Co-Channel Interference," IEEE Transactions on Vehicular Technology, vol. 60, no. 8, pp. 4035-4040, October 2011.

29. K. J. Kim, T. A. Tsiftsis, and R. Schober, "Semi-Blind Iterative Receiver for Coded MIMO-OFDM Systems" IEEE Transactions on Vehicular Technology, vol. 60, no. 7, pp. 3156-3168, September 2011.

28. T. Hazim, G. K. Karagiannidis, and T. A. Tsiftsis, "On the Probability of Early Detection of UWB Positioning Sensor Networks," IET Wireless Sensor Systems, vol. 1, no. 3, pp. 123-128, September 2011.

27. K. J. Kim, T. A. Tsiftsis, and V. H. Poor, "Power Allocation in Cyclic Prefixed Single-Carrier Relaying Systems," IEEE Transactions on Wireless Communications, vol.10, no.7, pp.2294-2305, July 2011.

26. K. J. Kim and T. A. Tsiftsis, "On the Performance of Cyclic Prefix-Based Single-Carrier Cooperative Diversity Systems with Best Relay Selection," IEEE Transactions on Wireless Communications, vol. 10, no. 4, pp. 1269-1279, April 2011.

25. H. A. Suraweera, T. A. Tsiftsis, G. K. Karagiannidis, and A. Nallanathan, "Effect of Feedback Delay on Amplify-and-Forward Relay Networks with Beamforming," IEEE Transactions on Vehicular Technology, vol. 60, no.3, pp. 1265-1271, March 2011.

24. T. Q. Duong, G. C. Alexandropoulos, H.-J. Zepernick, and T. A. Tsiftsis, "Orthogonal Space-Time Block Codes with CSI-Assisted Amplify-and-Forward Relaying in Correlated Nakagami-m Fading Channels," IEEE Transactions on Vehicular Technology, vol. 60, no.3, pp. 882-889, March 2011.

23. K. J. Kim and T. A. Tsiftsis, "Performance Analysis of QRD-based Cyclically Prefixed Single-Carrier Transmissions with Opportunistic Scheduling," IEEE Transactions on Vehicular Technology, vol. 60, no.1, pp. 328-333, January 2011.

22. K. J. Kim and T. A. Tsiftsis, "Performance Analysis of Cyclically Prefixed Single-Carrier Transmissions with Outdated Opportunistic User Selection, "IEEE Signal Processing Letters, vol. 17, no. 10, pp. 847-850, October 2010.

21. T. Q. Duong, G. C. Alexandropoulos, T. A. Tsiftsis, and H.-J. Zepernick, "Outage Probability of MIMO AF Relay Networks over Nakagami-m Fading Channels," Electronics Letters, vol. 46, no. 17, pp.1229–1231, August 2010.

20. N. D. Chatzidiamantis, M. Uysal, T. A. Tsiftsis, and G. K. Karagiannidis, "Iterative Maximum-Likelihood Sequence Detection for MIMO Optical Wireless Systems," IEEE/OSA Journal of Lightwave Technology, IEEE/OSA Journal of Lightwave Technology, vol.28, no.7, pp.1064-1070, April 2010.

19. H. G. Sandalidis, T. A. Tsiftsis, and G. K. Karagiannidis, "Optical Wireless Communication Systems with Heterodyne Detection over Turbulence Channels with Pointing Errors," IEEE/OSA Journal of Lightwave Technology, vol. 27, no. 20, pp. 4440 - 4445, October 2009.

18. H. Nistazakis, T. A. Tsiftsis, and G. Tombras, "Performance Analysis of Free-Space Optical Communication Systems over Atmospheric Turbulence Channels," IET-Communications, vol. 3, no. 8, p.1402-1409, August 2009.

17. T. A. Tsiftsis, H. G. Sandalidis, G. K. Karagiannidis, and M. Uysal, "Optical Wireless Links with Spatial Diversity over Strong Atmospheric Turbulence Channels," IEEE Transactions on Wireless Communications, vol. 8, no. 2, pp. 951 - 957, February 2009.

16. A. S. Lioumpas, G. K. Karagiannidis and T. A. Tsiftsis, "Adaptive Generalized Selection Combining (A-GSC) Receivers," IEEE Transactions on Wireless Communications, vol.7, no.12, pp.5214-5219, December 2008.

15. T. A. Tsiftsis, "Performance of Heterodyne Wireless Optical Communication Systems over Gamma-Gamma Atmospheric Turbulence Channels," Electronics Letters, vol. 44, no. 5, pp. 373-375, 28th February 2008.

14. D. S. Michalopoulos and T. A. Tsiftsis, "Performance Analysis of Wireless Multihop Diversity Systems," International Journal of Communications Systems – Wiley, vol. 21 no. 9, pp. 955-969, September 2008.

13. H. G. Sandalidis and T. A. Tsiftsis, "Outage Probability and Ergodic Capacity of Free-Space Optical Links over Strong Turbulence," Electronics Letters, vol. 44, no. 1, pp. 46-47, 3rd January 2008.

12. H. G. Sandalidis, T. A. Tsiftsis, George K. Karagiannidis and Murat Uysal, "BER Performance of FSO Links over Strong Atmospheric Turbulence Channels with Pointing Errors," IEEE Communications Letters, vol. 12, no.1, pp. 44-46, January 2008.

11. P. S. Bithas, N. C. Sagias, and T. A. Tsiftsis, "Performance analysis of dual-diversity receivers over correlated generalized Gamma fading channels," IET Communications, vol. 2, no.1, pp. 174-178, January 2008.

10. T. A. Tsiftsis, "Performance of wireless multihop communications systems with cooperative diversity over fading channels," International Journal of Communications Systems, Wiley, vol. 20, no. 12, December 2007.

9. D. S. Michalopoulos, G. K. Karagiannidis, T. A. Tsiftsis, and R. K. Mallik, "Distributed Transmit Antenna Selection (DTAS) under Performance or Energy Consumption Constraints," IEEE Transactions on Wireless Communications, vol. 7, no.4, pp.1168-1173, April 2008.

8. N. C. Sagias, G. K. Karagiannidis, P. T. Mathiopoulos, and T. A. Tsiftsis, "On the Performance Analysis of Equal Gain Diversity Receivers Over Generalized Gamma Fading Channels," IEEE Transactions on Wireless Communications, vol. 5, no. 10, pp. 2967-2975, October 2006.

7. G. K. Karagiannidis, T. A. Tsiftsis, and H. S. Sandalidis, "Outage Probability of Relayed Free-Space Optical Communication Systems" Electronics Letters, vol. 42, no. 17, pp. 1732-1745, August 2006.

6. T. A. Tsiftsis, G. K. Karagiannidis, P. T. Mathiopoulos, and S. A. Kotsopoulos, "Nonregenerative dual-hop cooperative links with selection diversity," Special Issue of the EURASIP Journal on Wireless Communications and Networking in Multiuser Cooperative Diversity for Wireless Networks, Volume 2006.

5. G. K. Karagiannidis, N. C. Sagias and T. A. Tsiftsis, "Closed-Form Statistics for the Sum of Squared Nakagami-m Variates and Its Applications," IEEE Transactions on Communications, vol. 54, no. 8, pp. 1353-1359, August 2006 .

4. G. K. Karagiannidis, T. A. Tsiftsis and R. K. Mallik, "Bounds for Multihop Relayed Communications in Nakagami-m Fading," IEEE Transactions on Communications, vol. 54, no. 1, pp. 18-22, January 2006.

3. T. A. Tsiftsis, G. K. Karagiannidis, S. A. Kotsopoulos, "Dual-hop wireless communications with combined gain relays," IEE Proceedings Communications, vol. 152, no. 5, October 2005.

2. G. K. Karagiannidis, T. A. Tsiftsis and N. C. Sagias, "A Closed-Form Upper-Bound for the Distribution of the Weighted Sum of Rayleigh variates," IEEE Communications Letters, vol. 9, no. 7, July 2005.

1. T. A. Tsiftsis, G. K. Karagiannidis, S. A. Kotsopoulos and F.-N. Pavlidou, "BER analysis of collaborative dual-hop wireless transmissions," IEE Electronics Letters, vol. 40, no. 11, pp. 1732-1745, May 2004.