All Stories

  1. Capacity and Outage Probability Analysis ofAsymmetric Dual-Hop RF-FSOCommunication Systems

    Article • IET Communications, May 2018, the Institution of Engineering and Technology (the IET)

    Theodoros Tsiftsis, Jagadeesh (Faculty Member)

  2. Secrecy Performance of Finite-Sized Cooperative Full-Duplex Relay Systems With Unreliable Backhauls

    Article • IEEE Transactions on Signal Processing, December 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  3. Efficient Coded Cooperative Networks With Energy Harvesting and Transferring

    Article • IEEE Transactions on Wireless Communications, October 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  4. Robust Online Spectrum Prediction With Incomplete and Corrupted Historical Observations

    Article • IEEE Transactions on Vehicular Technology, September 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  5. On the Diversity of Hybrid Narrowband-PLC/Wireless Communications for Smart Grids

    Article • IEEE Transactions on Wireless Communications, July 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  6. Distributed Spatial Multiplexing Systems With Hardware Impairments and Imperfect Channel Estimation Under Rank-1 Rician Fading Channels

    Article • IEEE Transactions on Vehicular Technology, June 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  7. EGC Reception for FSO Systems Under Mixture-Gamma Fading Channels and Pointing Errors

    Article • IEEE Communications Letters, June 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  8. On the Joint Impact of Hardware Impairments and Imperfect CSI on Successive Decoding

    Article • IEEE Transactions on Vehicular Technology, June 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  9. Maximizing Spectral Efficiency for Energy Harvesting-Aware WBAN

    Article • IEEE Journal of Biomedical and Health Informatics, May 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  10. Optimal transmit power and active interference mitigation of underlay MIMO cognitive systems

    Article • May 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  11. Simultaneous Spectrum Sensing and Data Reception for Cognitive Spatial Multiplexing Distributed Systems

    Article • IEEE Transactions on Wireless Communications, May 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  12. Performance analysis of uplink sparse code multiple access with iterative multiuser receiver

    Article • May 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  13. Resource allocation for energy harvesting-powered D2D communications underlaying cellular networks

    Article • May 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis, Dr Prabhat Kumar Sharma

  14. Efficient network-coded relaying systems with energy harvesting and transferring

    Article • May 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  15. Illumination, data transmission, and energy harvesting: the threefold advantage of VLC

    Article • Applied Optics, April 2017, Optical Society of America (OSA)

    Theodoros Tsiftsis

  16. Relayed FSO communication with aperture averaging receivers and misalignment errors

    Article • IET Communications, January 2017, the Institution of Engineering and Technology (the IET)

    Dr Prabhat Kumar Sharma, Professor Parul Garg, Theodoros Tsiftsis

  17. Resource Allocation in Spectrum-Sharing Cognitive Heterogeneous Networks

    Article • January 2017, Springer Science + Business Media

    Theodoros Tsiftsis

  18. Underlay Cognitive Relaying System Over $\alpha $ - $\mu $ Fading Channels

    Article • IEEE Communications Letters, January 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  19. Low Complexity Resource Allocation for Massive Carrier Aggregation

    Article • IEEE Transactions on Vehicular Technology, January 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  20. Superposition Modulation based Cooperation for Oversampled OFDM Signals

    Article • IEEE Transactions on Communications, January 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  21. An Improved Energy Detector for Mobile Cognitive Users over Generalized Fading Channels

    Article • IEEE Transactions on Communications, January 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis, Dr Prabhat Kumar Sharma

  22. A Comprehensive Framework for Spectrum Sensing in Non-Linear and Generalized Fading Conditions

    Article • IEEE Transactions on Vehicular Technology, January 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  23. Achievable Channel Cutoff Rate and Bandwidth Efficiency in Indoor Wireless Environments

    Article • IEEE Transactions on Vehicular Technology, December 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  24. Simultaneous Spectrum Sensing and Data Transmission for Multi-User MIMO Cognitive Radio Systems

    Article • December 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  25. An alignment-based interference cancellation scheme for network-MIMO systems

    Article • December 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  26. A closed-form solution to implement interference alignment and cancellation scheme for the MIMO three-user X-channel model

    Article • December 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  27. Green Cognitive Relaying: Opportunistically Switching Between Data Transmission and Energy Harvesting

    Article • IEEE Journal on Selected Areas in Communications, December 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  28. Guest Editorial Spectrum Sharing and Aggregation for Future Wireless Networks, Part II

    Article • IEEE Journal on Selected Areas in Communications, November 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  29. Guest Editorial Spectrum Sharing and Aggregation for Future Wireless Networks, Part I

    Article • IEEE Journal on Selected Areas in Communications, October 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  30. Secrecy Performance of Wirelessly Powered Wiretap Channels

    Article • IEEE Transactions on Communications, September 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  31. Efficient Coexistence of LTE With WiFi in the Licensed and Unlicensed Spectrum Aggregation

    Article • IEEE Transactions on Cognitive Communications and Networking, June 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  32. On the Higher Order Statistics of the Channel Capacity in Dispersed Spectrum Cognitive Radio Systems Over Generalized Fading Channels

    Article • IEEE Transactions on Vehicular Technology, May 2016, Institute of Electrical & Electronics Engineers (IEEE)

    George K. Karagiannidis, Theodoros Tsiftsis

  33. On the energy efficiency in multi-user multi-relay coded network

    Article • May 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  34. Energy efficient switching between data transmission and energy harvesting for cooperative cognitive relaying systems

    Article • May 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  35. Resource allocation for licensed/unlicensed carrier aggregation MIMO systems

    Article • April 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  36. Antenna beamforming for energy harvesting in cognitive radio networks

    Article • March 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  37. Cellular-Base-Station-Assisted Device-to-Device Communications in TV White Space

    Article • IEEE Journal on Selected Areas in Communications, January 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  38. Energy Efficient Cooperative Network Coding with Joint Relay Scheduling and Power Allocation

    Article • IEEE Transactions on Communications, January 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  39. A Joint Tensor Completion and Prediction Scheme for Multi-Dimensional Spectrum Map Construction

    Article • IEEE Access, January 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  40. Coverage Aspects of Indoor VLC Networks

    Article • Journal of Lightwave Technology, December 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  41. Investigation of a Waste Heat Recovery System for a more electric ship

    Article • September 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis, Nick Papanikolaou, Dr. Anastasios Ch Kyritsis

  42. Licensed Assisted Access: Key enabling functionalities and initial results

    Article • August 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  43. Area under ROC curve of energy detection over generalized fading channels

    Article • August 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  44. Aggregation of Spectrum Opportunities

    Article • July 2015, Wiley

    Theodoros Tsiftsis

  45. Deployment of wireless sensor network in dispersed renewable energy sources for increasing efficiency of power distribution networks

    Article • Journal of Modern Power Systems and Clean Energy, June 2015, Springer Science + Business Media

    Theodoros Tsiftsis, Nick Papanikolaou

  46. Wireless powered dual-hop multiple antenna relay transmission in the presence of interference

    Article • June 2015, Institute of Electrical & Electronics Engineers (IEEE)

    George K. Karagiannidis, Theodoros Tsiftsis

  47. Spectrum sensing in generalized multipath fading conditions using square-law combining

    Article • June 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  48. AUC study of energy detection based spectrum sensing over η-μ and α-μ fading channels

    Article • June 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  49. Wireless Information and Power Transfer in Relay Systems With Multiple Antennas and Interference

    Article • IEEE Transactions on Communications, April 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  50. Advances in Statistical Channel Modeling for Wireless Communications

    Article • International Journal of Antennas and Propagation, January 2015, Hindawi Publishing Corporation

    Theodoros Tsiftsis

  51. Analytic Expressions and Bounds for Special Functions and Applications in Communication Theory

    Article • IEEE Transactions on Information Theory, December 2014, Institute of Electrical & Electronics Engineers (IEEE)

    George K. Karagiannidis, Theodoros Tsiftsis

  52. Inter-band carrier aggregation in heterogeneous networks: Design and assessment

    Article • August 2014, Institute of Electrical & Electronics Engineers (IEEE)

    George K. Karagiannidis, Theodoros Tsiftsis

  53. Error-Rate Performance Analysis of Cooperative OFDMA System With Decode-and-Forward Relaying

    Article • IEEE Transactions on Vehicular Technology, June 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  54. Cooperative spectrum sharing systems with relay selection in the presence of multiple primary receivers

    Article • IET Communications, March 2014, the Institution of Engineering and Technology (the IET)

    George K. Karagiannidis, Theodoros Tsiftsis

  55. Free-Space Optical Communication with Nonzero Boresight Pointing Errors

    Article • IEEE Transactions on Communications, February 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  56. Multiuser and Multirelay Cognitive Radio Networks Under Spectrum-Sharing Constraints

    Article • IEEE Transactions on Vehicular Technology, January 2014, Institute of Electrical & Electronics Engineers (IEEE)

    George K. Karagiannidis, Theodoros Tsiftsis

  57. Cognitive cooperative networks in dual-hop asymmetric fading channels

    Article • December 2013, Institute of Electrical & Electronics Engineers (IEEE)

    George K. Karagiannidis, Theodoros Tsiftsis

  58. Distributed orthogonal space–time block coding in wireless relay networks

    Article • IET Communications, November 2013, the Institution of Engineering and Technology (the IET)

    Theodoros Tsiftsis

  59. The kappa-#181;/Ig Composite Statistical Distribution in RF and FSO Wireless Channels

    Article • September 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  60. Best relay selection in cooperative spectrum sharing systems with multiple primary users

    Article • June 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  61. The η−μ/IG distribution: A novel physical multipath/shadowing fading model

    Article • June 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  62. Cognitive multihop networks in spectrum sharing environment with multiple licensed users

    Article • June 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  63. Free-space optical communications with generalized pointing errors

    Article • June 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  64. Energy Detection Based Spectrum Sensing Over $\kappa{-}\mu$ and $\kappa{-}\mu$ Extreme Fading Channels

    Article • IEEE Transactions on Vehicular Technology, March 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  65. On the Application of Cooperative Communications in Renewable Energy Sources for Maximizing the Reliability of Power Distribution Networks

    Article • Journal of Green Engineering, January 2013, River Publishers

    Theodoros Tsiftsis, Nick Papanikolaou

  66. Noncoherent relay selection for bidirectional cooperative networks

    Article • December 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  67. Outage and Diversity of Cognitive Relaying Systems under Spectrum Sharing Environments in Nakagami-m Fading

    Article • IEEE Communications Letters, December 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  68. Keyhole Effect in Dual-Hop MIMO AF Relay Transmission with Space-Time Block Codes

    Article • IEEE Transactions on Communications, December 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  69. A Novel Distributed Antenna Selection Scheme for Fixed-Gain Amplify-and-Forward Relaying Systems

    Article • IEEE Transactions on Vehicular Technology, July 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  70. Cooperative wireless personal area network systems with partial best relay selection

    Article • Transactions on Emerging Telecommunications Technologies, October 2011, Wiley

    Theodoros Tsiftsis

  71. On the Performance of Cyclic-Prefixed Single-Carrier Cellular Systems in Cochannel Interference

    Article • IEEE Transactions on Vehicular Technology, October 2011, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  72. Probability of early detection of ultra-wideband positioning sensor networks

    Article • IET Wireless Sensor Systems, September 2011, the Institution of Engineering and Technology (the IET)

    Theodoros Tsiftsis

  73. Semiblind Iterative Receiver for Coded MIMO-OFDM Systems

    Article • IEEE Transactions on Vehicular Technology, September 2011, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  74. Power Allocation in Cyclic Prefixed Single-Carrier Relaying Systems

    Article • IEEE Transactions on Wireless Communications, July 2011, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  75. OSTBC Transmission in MIMO AF Relay Systems with Keyhole and Spatial Correlation Effects

    Article • June 2011, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  76. On the Performance of Cyclic Prefix-Based Single-Carrier Cooperative Diversity Systems with Best Relay Selection

    Article • IEEE Transactions on Wireless Communications, April 2011, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  77. Effect of Feedback Delay on Amplify-and-Forward Relay Networks With Beamforming

    Article • IEEE Transactions on Vehicular Technology, March 2011, Institute of Electrical & Electronics Engineers (IEEE)

    George K. Karagiannidis, Theodoros Tsiftsis

  78. Orthogonal Space–Time Block Codes With CSI-Assisted Amplify-and-Forward Relaying in Correlated Nakagami-$m$ Fading Channels

    Article • IEEE Transactions on Vehicular Technology, March 2011, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  79. Performance Analysis of QRD-Based Cyclically Prefixed Single-Carrier Transmissions With Opportunistic Scheduling

    Article • IEEE Transactions on Vehicular Technology, January 2011, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  80. Average Spectral Efficiency of Opportunistic QRD-Based Cyclic Prefixed Single-Carrier Cooperative Diversity Systems with Power Allocation

    Article • December 2010, Institute of Electrical & Electronics Engineers (IEEE)

    George K. Karagiannidis, Theodoros Tsiftsis

  81. Performance Analysis of Cyclically Prefixed Single-Carrier Transmissions With Outdated Opportunistic User Selection

    Article • IEEE Signal Processing Letters, October 2010, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  82. Average rate and outage probability of cyclic prefixed single-carrier opportunistic cooperative diversity systems

    Article • September 2010, Institute of Electrical & Electronics Engineers (IEEE)

    George K. Karagiannidis, Theodoros Tsiftsis

  83. Performance analysis of amplify-and-forward MIMO relay networks with transmit antenna selection over Nakagami-m channels

    Article • September 2010, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  84. Relaying utilization metrics of diamond cooperative diversity systems

    Article • January 2010, Institute of Electrical & Electronics Engineers (IEEE)

    George K. Karagiannidis, Theodoros Tsiftsis

  85. Effect of Feedback Delay on Downlink Amplify-and-Forward Relaying with Beamforming

    Article • November 2009, Institute of Electrical & Electronics Engineers (IEEE)

    George K. Karagiannidis, Theodoros Tsiftsis

  86. Optical wireless links with spatial diversity over strong atmospheric turbulence channels

    Article • IEEE Transactions on Wireless Communications, February 2009, Institute of Electrical & Electronics Engineers (IEEE)

    George K. Karagiannidis, Theodoros Tsiftsis

  87. Performance analysis of free-space optical communication systems over atmospheric turbulence channels

    Article • IET Communications, January 2009, the Institution of Engineering and Technology (the IET)

    Theodoros Tsiftsis

  88. Adaptive generalized selection combining (A-GSC) receivers

    Article • IEEE Transactions on Wireless Communications, December 2008, Institute of Electrical & Electronics Engineers (IEEE)

    George K. Karagiannidis, Theodoros Tsiftsis

  89. Performance analysis of wireless multihop diversity systems

    Article • International Journal of Communication Systems, September 2008, Wiley

    Theodoros Tsiftsis

  90. Distributed Transmit Antenna Selection (DTAS) Under Performance or Energy Consumption Constraints

    Article • IEEE Transactions on Wireless Communications, April 2008, Institute of Electrical & Electronics Engineers (IEEE)

    George K. Karagiannidis, Theodoros Tsiftsis

  91. Performance of heterodyne wireless optical communication systems over gamma-gamma atmospheric turbulence channels

    Article • Electronics Letters, January 2008, the Institution of Engineering and Technology (the IET)

    Theodoros Tsiftsis

  92. Performance analysis of dual-diversity receivers over correlated generalised Gamma fading channels

    Article • IET Communications, January 2008, the Institution of Engineering and Technology (the IET)

    Theodoros Tsiftsis

  93. Performance of wireless multihop communications systems with cooperative diversity over fading channels

    Article • International Journal of Communication Systems, January 2008, Wiley

    Theodoros Tsiftsis

  94. Outage probability and ergodic capacity of free-space optical links over strong turbulence

    Article • Electronics Letters, January 2008, the Institution of Engineering and Technology (the IET)

    Theodoros Tsiftsis

  95. FSO Links with Spatial Diversity over Strong Atmospheric Turbulence Channels

    Article • January 2008, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  96. Introducing PHY-Layer Fairness in Amplify and Forward Cooperative Diversity Systems

    Article • June 2007, Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  97. WLC41-1: An Optimized User Selection Method for Cooperative Diversity Systems

    Article • November 2006, Institute of Electrical & Electronics Engineers (IEEE)

    George K. Karagiannidis, Theodoros Tsiftsis

  98. Multihop Free-Space Optical Communications Over Strong Turbulence Channels

    Article • January 2006, Institute of Electrical & Electronics Engineers (IEEE)

    George K. Karagiannidis, Theodoros Tsiftsis

  99. Wireless Transmissions with Combined Gain Relays over Fading Channels

    Article • January 2006, Springer Science + Business Media

    George K. Karagiannidis, Theodoros Tsiftsis

  100. Nonregenerative Dual-Hop Cooperative Links with Selection Diversity

    Article • EURASIP Journal on Wireless Communications and Networking, January 2006, Springer Science + Business Media

    George K. Karagiannidis, Theodoros Tsiftsis

  101. Outage probability of relayed free space optical communication systems

    Article • Electronics Letters, January 2006, the Institution of Engineering and Technology (the IET)

    Theodoros Tsiftsis

  102. Dual-hop wireless communications with combined gain relays

    Article • IEE Proceedings - Communications, January 2005, the Institution of Engineering and Technology (the IET)

    Theodoros Tsiftsis

  103. BER analysis of collaborative dual-hop wireless transmissions

    Article • Electronics Letters, January 2004, the Institution of Engineering and Technology (the IET)

    Theodoros Tsiftsis

  104. Multihop communications with fixed-gain relays over generalized fading channels

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis

  105. New Results on the Performance Evaluation of the Relay Fading Channel

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Theodoros Tsiftsis