All Stories

  1. This work surveys cyber resilience and its frameworks.

    Article • ACM Computing Surveys, April 2024, ACM (Association for Computing Machinery)

    Saleh Mohamed AlHidaifi, Muhammad Rizwan Asghar, Dr Imran Shafique Ansari

  2. On Secure Downlink NOMA Systems With Outage Constraint

    Article • IEEE Transactions on Communications, December 2020, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Imran Shafique Ansari

  3. Mixed Dual-Hop FSO-RF Communication Systems Through Reconfigurable Intelligent Surface

    Article • IEEE Communications Letters, July 2020, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Imran Shafique Ansari

  4. On Secure Mixed RF-FSO Systems With TAS and Imperfect CSI

    Article • IEEE Transactions on Communications, July 2020, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Imran Shafique Ansari

  5. Outage of Cognitive Electric Vehicle Networks Over Mixed RF/VLC Channels With Signal-Dependent Noise and Imperfect CSI

    Article • IEEE Transactions on Vehicular Technology, June 2020, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Imran Shafique Ansari

  6. Performance Analysis of Dual-Hop RF-UWOC Systems

    Article • IEEE Photonics Journal, April 2020, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Imran Shafique Ansari

  7. Mitigating distributed denial of service attacks in satellite networks

    Article • Transactions on Emerging Telecommunications Technologies, March 2020, Wiley

    Dr Imran Shafique Ansari

  8. Safeguarding UAV IoT Communication Systems Against Randomly Located Eavesdroppers

    Article • IEEE Internet of Things Journal, February 2020, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Imran Shafique Ansari

  9. A Business and Legislative Perspective of V2X and Mobility Applications in 5G Networks

    Article • IEEE Access, January 2020, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Imran Shafique Ansari

  10. On Secrecy Performance of Mixed Generalized Gamma and Málaga RF-FSO Variable Gain Relaying Channel

    Article • IEEE Access, January 2020, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Imran Shafique Ansari

  11. Performance Evaluation of Relay-Aided CR-NOMA for Beyond 5G Communications

    Article • IEEE Access, January 2020, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Imran Shafique Ansari

  12. Secrecy Performance Analysis of Mixed Hyper-Gamma and Gamma-Gamma Cooperative Relaying System

    Article • IEEE Access, January 2020, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Imran Shafique Ansari

  13. Tractable Optical Channel Modeling Between UAVs

    Article • IEEE Transactions on Vehicular Technology, December 2019, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Imran Shafique Ansari

  14. Secrecy Outage Analysis for Cooperative NOMA Systems With Relay Selection Schemes

    Article • IEEE Transactions on Communications, September 2019, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Imran Shafique Ansari

  15. Adaptive Channel Coding and Power Control for Practical FSO Communication Systems Under Channel Estimation Error

    Article • IEEE Transactions on Vehicular Technology, August 2019, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Imran Shafique Ansari

  16. Outage Probability of a Multisensor Mixed UOWC–FSO Setup

    Article • IEEE Sensors Letters, August 2019, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Imran Shafique Ansari

  17. Theoretical analysis of frame detector based on differential correlation method

    Article • IET Communications, June 2019, the Institution of Engineering and Technology (the IET)

    Dr Imran Shafique Ansari, Assad Akhlaq

  18. Performance Analysis of DF Relay based RF-FSO Communication System in the Presence of Pointing Errors

    Article • IET Signal Processing, March 2019, the Institution of Engineering and Technology (the IET)

    Jagadeesh (Faculty Member), Dr Imran Shafique Ansari

  19. Asymptotic Performance Analysis of Two-Way Relaying FSO Networks With Nonzero Boresight Pointing Errors Over Double-Generalized Gamma Fading Channels

    Article • IEEE Transactions on Vehicular Technology, August 2018, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Imran Shafique Ansari

  20. Error Analysis of TAS/MRC in Rayleigh Fading Channel with Non-Gaussian Noise

    Article • Journal of the Franklin Institute, July 2018, Elsevier

    Dr Imran Shafique Ansari

  21. Performance Analysis of Hybrid FSO Systems Using FSO/RF-FSO Link Adaptation

    Article • IEEE Photonics Journal, June 2018, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Imran Shafique Ansari

  22. Free Space Optical Communications with Distributed Switch-and-Stay Combining

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

    Dr Imran Shafique Ansari, George K. Karagiannidis, Juhi Gupta, Vikram Karwal

  23. Technologies and Solutions for Location-Based Services in Smart Cities: Past, Present, and Future

    Article • IEEE Access, January 2018, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Imran Shafique Ansari, Fabrizio Granelli

  24. Security in Wireless Body Area Networks: From In-Body to Off-Body Communications

    Article • IEEE Access, January 2018, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Imran Shafique Ansari

  25. On Secrecy Outage of Relay Selection in Underlay Cognitive Radio Networks Over Nakagami- $m$ Fading Channels

    Article • IEEE Transactions on Cognitive Communications and Networking, December 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Imran Shafique Ansari, Dr Hongjiang Lei

  26. Wireless energy harvesting in cooperative decode-and-forward relaying networks over mixed generalized η -μ and κ -μ fading channels

    Article • Transactions on Emerging Telecommunications Technologies, November 2017, Wiley

    Dr Imran Shafique Ansari

  27. Performance Analysis of Single-Photon Avalanche Diode Underwater VLC System Using ARQ

    Article • IEEE Photonics Journal, October 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Imran Shafique Ansari

  28. On Secrecy Performance of Mixed RF-FSO Systems

    Article • IEEE Photonics Journal, August 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Hongjiang Lei, Dr Imran Shafique Ansari

  29. Secrecy Performance Analysis of SIMO Underlay Cognitive Radio Systems with Outdated CSI

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

    Dr. hongjiang lei, Dr Imran Shafique Ansari, Dr Hongjiang Lei

  30. Outage Analysis of Mixed Underlay Cognitive RF MIMO and FSO Relaying With Interference Reduction

    Article • IEEE Photonics Journal, April 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Imran Shafique Ansari

  31. Secrecy Capacity Analysis over $\alpha - \mu$ Fading Channels

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

    Dr Imran Shafique Ansari, Dr Hongjiang Lei

  32. On Secure Underlay MIMO Cognitive Radio Networks with Energy Harvesting and Transmit Antenna Selection

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

    Dr Imran Shafique Ansari, Dr Hongjiang Lei

  33. Unified Performance Analysis for Multiuser Mixed η-μ and Μ-Distribution Dual-Hop RF/FSO Systems

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

    Dr Imran Shafique Ansari

  34. Physical-Layer Security with Full-Duplex Transceivers and Multiuser Receiver at Eve

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

    Dr Imran Shafique Ansari

  35. On Secure NOMA Systems With Transmit Antenna Selection Schemes

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

    Dr Imran Shafique Ansari, Dr Hongjiang Lei

  36. Channel capacity analysis of a mixed dual-hop radio-frequency–free space optical transmission system with Málaga distribution

    Article • IET Communications, November 2016, the Institution of Engineering and Technology (the IET)

    Dr Imran Shafique Ansari, Jagadeesh (Faculty Member)

  37. Physical-layer security over generalised-K fading channels

    Article • IET Communications, November 2016, the Institution of Engineering and Technology (the IET)

    Dr Imran Shafique Ansari, Dr. hongjiang lei, Dr Hongjiang Lei

  38. Outage Analysis of Asymmetric RF-FSO Systems

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

    Dr Imran Shafique Ansari

  39. Performance Analysis of Physical Layer Security Over Generalized-K Fading Channels Using a Mixture Gamma Distribution

    Article • IEEE Communications Letters, February 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Imran Shafique Ansari, Dr Hongjiang Lei

  40. Performance Analysis of Free-Space Optical Links Over Málaga ($\mathcal{M} $) Turbulence Channels With Pointing Errors

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

    Dr Imran Shafique Ansari

  41. On the Maximum and Minimum of Double Generalized Gamma Variates with Applications to the Performance of Free-space Optical Communication Systems

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

    Dr Imran Shafique Ansari

  42. Secrecy Outage Performance for SIMO Underlay Cognitive Radio Systems with Generalized Selection Combining over Nakagami-m Channels

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

    Dr Imran Shafique Ansari, Dr Hongjiang Lei

  43. Secrecy Outage Performance of Transmit Antenna Selection for MIMO Underlay Cognitive Radio Systems over Nakagami-m Channels

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

    Dr Imran Shafique Ansari, Dr Hongjiang Lei

  44. Secrecy Outage Analysis for SIMO Underlay Cognitive Radio Networks over Generalized-K Fading Channels

    Article • IEEE Signal Processing Letters, January 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Imran Shafique Ansari, Dr Hongjiang Lei

  45. Information Theoretical Limits of Free-Space Optical Links

    Article • January 2016, Springer Science + Business Media

    Dr Imran Shafique Ansari

  46. On the Performance of Free-Space Optical Communication Systems Over Double Generalized Gamma Channel

    Article • IEEE Journal on Selected Areas in Communications, September 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Imran Shafique Ansari

  47. Ergodic Capacity Analysis of Free-Space Optical Links With Nonzero Boresight Pointing Errors

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

    Dr Imran Shafique Ansari

  48. Performance Analysis of FSO Links over Unified Gamma-Gamma Turbulence Channels

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

    Dr Imran Shafique Ansari

  49. On the Performance Analysis of Digital Communications over Weibull-Gamma Channels

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

    Dr Imran Shafique Ansari

  50. Asymptotic Ergodic Capacity Analysis of Composite Lognormal Shadowed Channels

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

    Dr Imran Shafique Ansari

  51. Unified performance analysis of mixed line of sight RF-FSO fixed gain dual-hop transmission systems

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

    Dr Imran Shafique Ansari

  52. Performance Analysis of Mixed Nakagami- $m$ and Gamma–Gamma Dual-Hop FSO Transmission Systems

    Article • IEEE Photonics Journal, February 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Imran Shafique Ansari

  53. On Physical Layer Security over SIMO Generalized-K Fading Channels

    Article • IEEE Transactions on Vehicular Technology, January 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Imran Shafique Ansari, Dr Hongjiang Lei

  54. New results on the sum of Gamma random variates with application to the performance of wireless communication systems over Nakagami-mfading channels

    Article • Transactions on Emerging Telecommunications Technologies, December 2014, Wiley

    Dr Imran Shafique Ansari

  55. On the performance of hybrid line of sight RF and RF-FSO fixed gain dual-hop transmission systems

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

    Dr Imran Shafique Ansari

  56. Outage performance analysis of underlay cognitive RF and FSO wireless channels

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

    Dr Imran Shafique Ansari

  57. On the Capacity of FSO Links under Lognormal and Rician-Lognormal Turbulences

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

    Dr Imran Shafique Ansari

  58. On the maximum and minimum of two modified Gamma-Gamma variates with applications

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

    Dr Imran Shafique Ansari

  59. A performance study of two hop transmission in mixed underlay RF and FSO fading channels

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

    Dr Imran Shafique Ansari

  60. On the performance of free-space optical wireless communication systems over double generalized gamma fading channels

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

    Dr Imran Shafique Ansari

  61. On the performance of hybrid RF and RF/FSO dual-hop transmission systems

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

    Dr Imran Shafique Ansari

  62. On the Performance of Mixed RF/FSO Variable Gain Dual-Hop Transmission Systems with Pointing Errors

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

    Dr Imran Shafique Ansari

  63. Impact of Pointing Errors on the Performance of Mixed RF/FSO Dual-Hop Transmission Systems

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

    Dr Imran Shafique Ansari

  64. On the Sum of Squared eta-µ Random Variates with Application to the Performance of Wireless Communication Systems

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

    Dr Imran Shafique Ansari

  65. On the Performance of Mixed RF/FSO Dual-Hop Transmission Systems

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

    Dr Imran Shafique Ansari

  66. On the performance of hybrid RF and RF/FSO fixed gain dual-hop transmission systems

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

    Dr Imran Shafique Ansari

  67. On the sum of gamma random variates with application to the performance of maximal ratio combining over Nakagami-m fading channels

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

    Dr Imran Shafique Ansari

  68. A New Formula for the BER of Binary Modulations with Dual-Branch Selection over Generalized-K Composite Fading Channels

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

    Dr Imran Shafique Ansari

  69. An Exact Closed-Form Expression for the BER of Binary Modulations with Dual-Branch Selection over Generalized-K Fading

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

    Dr Imran Shafique Ansari

  70. An Implementation of Traffic Light System Using Multi-hop Ad hoc Networks

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

    Dr Imran Shafique Ansari

  71. Biometrics for home networks security

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

    Dr Imran Shafique Ansari