Dr Tuan Le

Research interests:

My research interest focuses on developing resource allocation strategies and algorithms for wireless communication networks satisfying the mix of users’ demands, i.e., high data rates, increasing number mobile users/devices, security, reliability, with energy efficiency, spectral efficiency and security. The tools for solving such challenging problems are convex optimisation, multi-objective optimisation and nature-inspired intelligence. 

Specifically, my research topics are as following:

Reconfigurable holographic surface (RHS) aided communications

Reconfigurable intelligent surface (RIS) aided communications 

Integrated radio-sensing and communications 

Ambient backscatter communications

Physical (PHY) layer securityInterference management for 5G and beyond networks 

D2D CommunicationsRF energy harvestingSimultaneous Wireless Information and Power Transfer (SWIPT) 

Wireless Power Communication Networks (WPCNs) 

Non-orthogonal Multiple Access

Channel estimation and resource allocation techniques for Massive MIMO 

Cooperative Communications 

Cognitive Radio Networks 

Coordinated Multipoint Transmissions (CoMP)Beamforming

Applications of convex optimisation, multi-objective optimisation, and nature-inspired intelligence in Wireless Communications 

My updated publications can be found at the following link:

https://scholar.google.co.uk/citations?user=1pFg1RkAAAAJ&hl=en

Completed PhD students:

Hayder Al-Salihi (PhD thesis at King's College London, 2015-March 2018) (Co-suppervisor with Dr Mohammad Reza Nakhai) - Research topic: "Pilot Contamination Mitigation for Massive MIMO System using Novel Channel Estimation Techniques".

Current PhD students:

Geili Tawfieg Abdalla Elsanousi (PhD thesis at Middlesex University, 2020-present) (Co-suppervisor with Prof. Xin-She Yang and Prof. Huan X. Nguyen) - Research topic: "Antenna Designs for In-band Full Duplex".

Prospective PhD students:

I am looking for highly motivated students with strong mathematics and telecommunications backgrounds. Please contact me at t(dot)le(at)mdx(dot)ac(dot)uk for details.

Publications:

Book chapter:

[BC2]  T. A. Le and X.-S. Yang, “ Transmit Beamforming Designs in Wireless Communications using the Firefly Algorithm,” in  X.-S. Yang, Engineering Applications of AI and Swarm Intelligence, Springer, to be published in late 2024.

[BC1] M. R. Nakhai, T. A. Le, A. M. Akhtar, and O. Holland, “Chapter 11: Cooperative multi-cell processing techniques for energy-efficient cellular wireless  networks,” in  E. Hossain, V. K. Bhargava and G. P. Fettweis, Green  Radio Communication Networks, Cambridge University Press, 2012.

Journal:

[J24] M. K. Hoang, T. A. Le, K.-X. Thuc, T. V. Luyen, X.-S. Yang, and D. W. K. Ng, "Firefly Algorithm for Movable Antenna Arrays," IEEE Wireless Communications Letters, p. 1-5, Early Access, DOI:  10.1109/LWC.2024.3456899

[J23] T. A. Le and X.-S. Yang, "Genenalized Firefly Algorithm for Optimal Transmit Beamforming,'' IEEE Transactions on Wireless Communications, vol. 23, no. 6, pp.5863-5877, Jun. 2024

[J22] T. A. Le, D. W. K. Ng, and X.-S. Yang, "A Rank-One Optimization Framework and its Applications to Transmit Beamforming,'' IEEE Transactions on Vehicular Technology, vol. 73, no. 1, pp. 620-636, Jan. 2024

[J21] T. A. Le, T. Van Chien, and M. D. Renzo, "Robust Probabilistic-Constrained Optimization for IRS-Aided MISO Communication Systems,'' IEEE Wireless Communications Letters, vol. 10, no. 1, pp. 1-5, Jan. 2021

[J20] T. A. Le, T. Van Chien, M. R. Nakhai, and T. Le-Ngoc, "Pareto-Optimal Pilot Design for Cellular Massive MIMO Systems,'' IEEE Transactions on Vehicular Technology, vol. 69, no. 11, pp. 13206-13215, Nov. 2020

[J19] Q.-T. Vien, T. A. Le, X.-S. Yang, and T. Q. Duong, "Enhancing security of MME handover via fractional programming and Firefly algorithm", IEEE Transactions on Communications, vol. 67, no. 9, pp. 6206-6220, Sept. 2019.

[J18] Q.-T. Vien, T. A. Le, H. X. Nguyen, and T. Le-Ngoc, "A physical layer network coding based modify-and-forward with opportunistic secure cooperative transmission protocol," Mobile Networks and Applications, Oct. 2018.

[J17] H. Al-Salihi, M. R. Nakhai, and T. A. Le, "Enhanced sparse Bayesian learning-based channel estimation with optimal pilot design for massive MIMO–OFDM systems", IET Communications, vol. 12, no. 17, pp. 2174-2180, Oct. 2018.

[J16] H. Al-Salihi, T. V. Chien, T. A. Le, M. R. Nakhai, "A Successive Optimization Approach to Pilot Design for Multi-Cell Massive MIMO Systems", IEEE Communications Letters, vol. 22, no. 5, pp. 1086-1089, May, 2018.

[J15] Z. Chu, T. A. Le, H. X. Nguyen,  A. Nallanathan, and M. Karamanoglu, "A Stackelberg-Game Approach for Disaster-Recovery Communications Utilizing Cooperative D2D", IEEE Access, vol. 6, no. 1, pp. 10733-10742, Dec. 2018.

[J14] Z. Chu, H. X. Nguyen, T. A. Le,  M. Karamanoglu, E. Ever, and A. Yazici, "Secure Wireless Powered and Cooperative Jamming D2D Communications," IEEE Transactions on Green Communications and Networking, vol. 2, no. 1, pp. 1-13, Mar. 2018.

[J13] Q.-T. Vien, M. O. Agyeman, T. A. Le, and T. Mak, "On the nanocommunications at THz band in Graphene-enabled wireless network-on-chip," Mathematical Problems in Engineering, 2017, pp. 1-13.

[J12] T. A. Le, Q.-T. Vien, H. X. Nguyen, D. W. K. Ng, and R. Schober, "Robust chance-constrained optimization for power-efficient and secure SWIPT systems," IEEE Transactions on Green Communications and Networking, vol. 1, no. 3, pp. 333-346, Sep. 2017.

[J11]  I. Karim, Q.-T. Vien, T. A. Le, and G. Mapp, "A comparative experimental design and performance analysis of Snort-based intrusion detection system in practical computer networks," Computers, vol. 6, no. 1, pp. 1-15, 2017.

[J10] Q.-T. Vien, T. A. Le, B. Barn, and C. Phan, "Optimising Energy Efficiency of NOMA for Wireless Backhaul in Heterogeneous CRAN," IET Communications,  vol. 10, no. 18, pp. 2516-2524, Dec. 2016.

[J9] S. Nasseri, M. R. Nakhai, and T. A. Le, “Chance Constrained Robust Downlink Beamforming in Multicell Networks,” IEEE Transactions on Mobile Computing, vol. 15, no. 11, pp. 2682-2691, Nov. 2016.

[J8] T. A. Le, H. X. Nguyen, Q.-T. Vien, and M. Karamanoglu, “Secure Information Transmission and Power Transfer in Cellular Networks,” IEEE Communications Letters, vol. 19, no. 9, pp. 1532-1535, Jul. 2015.

[J7] T. A. Le and K. Navaie, “On the interference tolerance of the primary system in cognitive radio networks,” IEEE Wireless Communications Letters, vol. 4, no. 3, pp. 281-284, Jun. 2015.

[J6] T. A. Le and K. Navaie, “Downlink beamforming in underlay cognitive cellular networks,” IEEE Transactions on Communications, vol. 62, no. 7, pp. 2212-2223, Jul. 2014.

[J5] T. A. Le and M. R. Nakhai, “Downlink optimization with interference pricing and statistical CSI,” IEEE Transactions on Communications, vol. 61, no. 6, pp. 2339-2349, Jun. 2013.

[J4] T. A. Le, S. Nasseri, A. Zarrebin-Esfahani, A. Mills, and M. R. Nakhai, “Power-efficient downlink transmission in multi-cell networks with limited wireless backhaul,” IEEE Wireless Communications Magazine, Special Issue on Technologies for Green Radio Communication Networks, vol. 18, no. 5, pp. 82-88, Oct. 2011.

[J3] T. A. Le and M. R. Nakhai, “Throughput analysis of network coding enabled wireless backhauls,” IET Communications, vol. 5, no. 10, pp. 1318-1327, Jul. 2011.

[J2] C. Han, T. Harrold, S. Armour, I. Krikidis, S. Videv, P. M. Grant, H. Haas,  J. S. Thompson, I. Ku, C.-X. Wang, T. A. Le, M. R. Nakhai, J. Zhang, and  L. Hanzo, “Green radio: Radio techniques to enable energy-efficient wireless  networks,” IEEE Wireless Communications Magazine, vol. 49, no. 6, pp.  46-54, Jun. 2011.

[J1] T. A. Le and M. R. Nakhai, “Possible power-saving gains by dividing a cell  into tiers of smaller cells,” IET Electronics Letters, vol. 46,  no. 16, pp. 1163-1165, Aug. 2010.

Conference:

[C36] T. A. Le, I. Ku,  X.-S. Yang, C. Masouros, and T. Le-Ngoc, “Cognitive Beamforming Design for Dual-Function Radar-Communications,” in Proc. IEEE 99th Veh. Technol. Conf. Spring (VTC2024-Spring), June 2024, pp. 1-5.

[C35] T. A. Le and X.-S. Yang, “Firefly Algorithm for Beamforming Design in RIS-aided Communications Systems,” in Proc. IEEE 97th Veh. Technol. Conf. Spring (VTC2023-Spring), June 2023, pp. 1-5.

[C34]  G. T. A. El Sanousi, F. Hirtenfelder, M. A. H. Abbas, R. A. A. Abd-Alhameed, X. -S. Yang, T. A. Le, and H. X. Nguyen, "The Peculiar Case of the Concentric Circular Hexagonal-Star Array: Design and Features," in Proc. IEEE 28th Int. Conf.  Telecommun. (ICT), Jun. 2021, pp. 1-6.

[C33] I. Ku, L. V. Hung, A. A. El-Saleh, T. A. Le, and M. Y. Alias, ''Trade-Off Performances in Multiuser MIMO Networks with Quantized CSI Feedback,'' in  Proc. 2020 IEEE 5th Int. Symp. Telecommun. Technol. (ISTT), Nov. 2020, pp. 145-150. (Best paper award)

[C32] L. V. Hung, I. Ku, A. A. El-Saleh, and T. A. Le, "On the Efficiency of MIMO Transmission with channel state information Feedback," in Proc. IEEE Int. Conf. on Telecommun. (ICT 2019), Apr., 2019, pp. 1-5.

[C31] A. Omorinoye, Q.-T. Vien, T. A. Le, and P. Shah, "On the Resource Allocation for D2D Underlaying Uplink Cellular Networks," in Proc. IEEE Int. Conf. on telecommun. (ICT 2019), Apr., 2019, pp. 1-5.

[C30] T. A. Le, T. V. Chien, and M. R. Nakhai, "A Power Efficient Pilot Design for Multi-cell Massive MIMO Systems," in Proc. IEEE Global Conf. on Informa. and Signal Process. (GlobalSIP 2018), Nov., 2018, pp. 1-5.

[C29] H. Al-salihi, M. R. Nakhai, and T. A. Le, "DFT-Based Channel Estimation Techniques for Massive MIMO Systems," in Proc. IEEE Int. Conf. Telecommun. (ICT 2018), June, 2018, pp. 1-5.

[C28] T. V. Chien, E. Björnson, E. G. Larsson, T. A. Le, "Distributed Power Control in Downlink Cellular Massive MIMO Systems", in Proc. IEEE ITG Workshop on Smart Antennas (WSA 2018), Mar., 2018, pp. 1-7.

[C27] Z. Chu, T. A. Le, D. To, and H. X. Nguyen, "Sum Throughput Optimization for Wireless Powered Sensor Networks", in Proc. IEEE Global Telecommun. Conf. (GLOBECOM 2017), Dec., 2017, pp.1-6.

[C26] Z. Chu, T. A. Le, H. X. Nguyen, M. Karamanoglu, Z. Zhu, A. Nallanathan, E. Ever, and Adnan Yazici, "Robust Design for MISO SWIPT System with Artificial Noise and Cooperative Jamming", in Proc. IEEE Global Telecommun. Conf. (GLOBECOM 2017), Dec., 2017, pp.1-6.

[C25] Z. Chu, T. A. Le, H. X. Nguyen, A. Nallanathan, and M. Karamanoglu, "Robust Sum Secrecy Rate Optimization for MIMO Two-way Full Duplex Systems", in Proc. IEEE 86th Veh. Technol. Conf. (VTC Fall), Sep. 2017, pp. 1-5.

[C24] H. Al-salihi, M. R. Nakhai, and T. A. Le, "Enhanced Sparse Bayesian Learning-based Channel Estimation for Massive MIMO-OFDM Systems," in Proc. European Conf. Network Commun. (EuCNC 2017), Jun. 2017, pp. 1-5.

[C23] Q.-T. Vien, T. A. Le, C. V. Phan, and M. O. Agyeman, "An Energy-Efficient NOMA for Small Cells in Heterogeneous CRAN Under QoS Constraints," in Proc. European Wireless 2017, May 2017, pp. 1-6.

[C22] Z. Chu, H. X. Nguyen, T. A. Le, M. Karamanoglu, D. To, E. Ever, F. M. Al-Tuhman, and A. Yazici, "D2D Cooperative Communications for Disaster Management," in Proc. IEEE Int. Conf. Telecommun. (ICT 2017), May, 2017, pp. 1-5.

[C21] Q.-T. Vien, T. A. Le, and T. Q. Duong, "Opportunistic secure transmission for wireless relay networks with Modify-and-Forward protocol",  in Proc. IEEE Int. Conf. Commun. (ICC 2017), May. 2017,  pp. 1-6.

[C20] Z. Chu, H. X. Nguyen, T. A. Le, M. Karamanoglu, D. To, E. Ever, F. M. Al-Tuhman, "Game theory based secure wireless powered D2D communications with cooperative jamming", in Proc. Wireless days 2017, Mar. 2017, pp. 1-4.

[C19] Q.-T. Vien, T. A. Le, X.-S. Yang, and T. Q. Duong, "On the handover security key update and residence management in LTE networks", in Proc. IEEE WCNC, Mar. 2017, pp.1-6.

[C18] T. A. Le, Q.-T. Vien, H. X. Nguyen, D. W. K. Ng, and R. Schober, "Robust Chance-Constrained Optimization for Power-Efficient and Secure SWIPT", in Proc. IEEE Global Telecommun. Conf. (GLOBECOM 2016), Dec., 2016, pp.1-7.

[C17] T. A. Le, K. Navaie, Q.-T. Vien, and H. X. Nguyen, “Beamforming in Coexisting Wireless Systems with Uncertain Channel State Information,” in Proc. IEEE 82nd Veh. Technol. Conf. (VTC Fall), Sep. 2015, pp. 1-5, Invited paper.

[C16] Q.-T. Vien, T. A. Le, H. X. Nguyen, and H. Phan, “A Secure Network Coding based Modify-and-Forward Scheme for Cooperative Wireless Relay Networks,” in Proc. IEEE 81st Veh. Technol. Conf. (VTC Spring), May 2015, pp. 1-5.

[C15] Q.-T. Vien, T. A. Le, H. X. Nguyen, and M. Karamanoglu, “An Energy-Efficient Resource Allocation for Optimal Downlink Coverage in Heterogeneous Wireless Cellular Networks,” in Proc.  IEEE Int. Symp. Wireless Commun. Systems (ISWCS 2015), Aug. 2015, pp. 1-5.

[C14] T. A. Le, H. X. Nguyen, Q.-T. Vien, and M. Karamanoglu, “Secure Information Transmission in the Presence of Energy-Harvesting Eavesdroppers in Multi-cell Networks,” in Proc. IEEE Global Telecommun. Conf. (GLOBECOM 2015), Dec., 2015, pp. 1-6.

[C13] T. A. Le, M. R. Nakhai, and K. Navaie, “A Robust Transmission Strategy for Multi-cell Interference Networks,” in Proc. IEEE Global Telecommun. Conf. (GLOBECOM 2015), Dec., 2015, pp. 1-6.

[C12] Q.-T. Vien, T. A. Le, H. X. Nguyen, and M. Karamanoglu, “An Energy-Efficient Resource Allocation for Optimal Downlink Coverage in Heterogeneous Wireless Cellular Networks,” in Proc. IEEE 12^th International Symposium on Wireless Communications Systems (ISWCS), Aug. 2015, pp. 1-5.

[C11] T. A. Le, T. Gherkar, M. R. Nakhai and K. Navaie, “Symbol Timing Offset Mitigation in OFDMA-Based CoMP Utilizing Position Aware Transmission," in Proc. IEEE 81st Veh. Technol. Conf. (VTC Spring), May 2015, pp. 1-5.

[C10] A. Zarrebin-Esfahani, T. A. Le and M. R. Nakhai, “Robust Cognitive Beamforming for Cell-edge Coverage in Multicell Networks with Probabilistic Constraints,” in Proc. IEEE Global Telecommun. Conf. (GLOBECOM 2013), Dec., 2014, pp. 1-6.

[C9] K. Navaie, and T. A. Le, "Fundametal Performance Trade-offs in Coexisting Wireless Networks", IEEE 1st Int. Conf. on 5G for Ubiquitous Connectivity, Nov. 2014, pp. 246-251.

[C8] T. A. Le, and K. Navaie, "Downlink Beamforming Design for Cognitive Cellular Systems", in Proc. IEEE WCNC, Apr. 2014, pp. 1199-1204.

[C7] A. Zarrebin-Esfahani, T. A. Le and M. R. Nakhai, “Power-Efficient Coverage Scheme for Cell-Edge Users using Cognitive Beamforming,” in Proc. IEEE 24nd International Symposium on PIMRC 2013, Sep. 2013, pp. 3043-3047.

[C6] S. Nasseri, T. A. Le and M. R. Nakhai, “Robust and Power Efficient Interference Management in Downlink Multi-cell Networks,” in Proc. IEEE 24nd International Symposium on PIMRC 2013, Sep. 2013, pp. 1102-1106.

[C5] T. A. Le and M. R. Nakhai, “A decentralized downlink beamforming algorithm for multi-cell processing,” in Proc. IEEE Global Telecommun. Conf. (GLOBECOM 2012),  pp 1-6, Dec. 2012.

[C4] T. A. Le and M. R. Nakhai, “Coordinated beamforming using semidefinite programming,” in Proc. IEEE Int. Conf. Commun. (ICC 2012), Jun. 2012,  pp. 1-5.

[C3] T. A. Le and M. R. Nakhai, “An iterative algorithm for downlink multi-cell beam-forming,” in Proc. IEEE Global Telecommun. Conf. (GLOBECOM 2011), Dec. 2011, pp.  1-6.

[C2] T. A. Le and M. R. Nakhai, “User position aware multi-cell beamforming for a distributed antenna system,” in Proc. IEEE 22nd International Symposium on PIMRC, Sep.  2011, pp. 1398-1342.

[C1] A. M. Akhtar, O. Holland, T. A. Le, M. R. Nakhai and A. H. Aghvami, “Cooperative Cognitive Radio Beamforming in the Presence of Location Errors,” in Proc. IEEE 73rd  Vehicular Technology Conference (VTC Spring), Invited Paper, May 2011, pp. 1-5.

Invited talk:

[T4] T. A. Le, "D2D solutions for disaster communications: Optimisation Approaches," Middle Eeast Technical University, Ankara, Turkey, Jan. 2019.

[T3] T. A. Le, "D2D Communications and Possible Applications to Transportation," University of Transport and Communications, Hanoi, Vietnam, Oct. 2018.

[T2] T. A. Le, "A Stackelberg-Game Approach for Disaster Management Utilizing D2D Cooperative Communications," Middle Eeast Technical University, Ankara, Turkey, Sep. 2017.

[T1] T. A. Le, "Interference Management and Exploitation in 5G Networks," Queen's University Belfast, Belfast, UK, Sep. 2016.

2023 - present: MSc in Electronics Engineering- Programme Leader

2023 - present: MSc in Telecommunications Engineering- Co-Programme Leader 

2023 - present: MSc in Intelligent Telecommunications Engineering-Co-Programme Leader

 2021- present: Digital Signal Processing and Wireless Communications (PDE2103, Undergraduate, second year)-Module Leader

2018- present: System Design and Validation (PDE3420, Undergraduate, third year)-Module Leader

2019- 2021: System-on-a-Chip Design (PDE3411, Undergraduate, third year)-Module Leader

2020-2022: Practical Applications of Mathematics for Engineers (PDE1140, Undergraduate, first year)

2015-2020: Physical Computing: Electronics (PDE1410, Undergraduate, first year)-Module Leader2019-2021: Electronic Engineering Group Projects (PDE2420, Undergraduate, second year)-Module Leader

2015-2020: Physical Computing: Programming (PDE1410, Undergraduate, first year)-Module Leader

2015-2017: Real-time Wireless Signal Processing and Software Radio (CCE2090, Undergraduate, second year)- Module Leader

2016-2017: Mobile Communications (CCE4830, Postgraduate)- Module Leader

2015-2016: Digital Transmission System (CCE4820, Postgraduate)