Mail Address:
Ecole Supérieure d'Ingénieurs de Beyrouth (ESIB)
Faculty of Engineering
Saint Joseph University of Beirut
Campus of Sciences and Technologies, Mar Roukoz - Mkalles
P.O. Box 11-514, Riad El-Solh
Beirut 1107 2050, Lebanon

Office Address:
Centre d'Informatique, de Modélisation et de Technologies de l'Information (CIMTI)
Office CI C04

Email: melhem.helou@usj.edu.lb
Tel.: +961-1-421338
Fax: +961-4-532645

Melhem El Helou received the engineer's and master's degrees in telecommunications and networking engineering from the Ecole Supérieure d’Ingénieurs de Beyrouth (ESIB), Saint Joseph University of Beirut, Beirut, Lebanon, in 2009 and 2010, respectively and the Ph.D. degree in computer and telecommunications engineering from IRISA Research Institute, University of Rennes 1, Rennes, France and Saint Joseph University of Beirut, in 2014. He joined ESIB in September 2013 where he is currently an Associate Professor

My research interests include wireless networking, cellular technologies, Internet of Things, and quality of service.

Motivated masters and PhD students, who are interested in working in the above research areas, are welcome to send unsolicited applications. For more details, please contact me.

• M. El Helou, Radio Access Technology Selection in Heterogeneous Wireless Networks: A Hybrid Approach. Saarbrücken, Germany: LAP Lambert Academic Publishing AG & Co. KG, 2015. ISBN: 978-3-659-71923-3

• K. Boulos, K. Khawam, M. El Helou, M. Ibrahim, S. Martin, and H. Sawaya, “On Common Spectrum and Active Infrastructure Sharing in Cloud Radio Access Networks,” in Wiley 5G Ref: The Essential 5G Reference Online, R. Tafazolli, C.-L. Wang, and P. Chatzimisios, Eds. Hoboken, New Jersey, United States: John Wiley & Sons Ltd., 2021.
  DOI: 10.1002/9781119471509.w5GRef130, ISBN: 978-1-119-47150-9

• Z. Awada, K. Boulos, M. El Helou, K. Khawam, and S. Lahoud, “Distributed Multi-Tenant RAN Slicing in 5G Networks,” Springer Wireless Networks, vol. 28, no. 7, pp. 3185–3198, October 2022. DOI: 10.1007/s11276-022-03023-8

• H. Taleb, K. Khawam, S. Lahoud, M. El Helou, and S. Martin, “Pilot Contamination Mitigation in Massive MIMO Cloud Radio Access Networks,” IEEE Access, vol. 10, pp. 58212–58224, May 2022. DOI: 10.1109/ACCESS.2022.3177629

• K. Khawam, S. Lahoud, M. El Helou, S. Martin, and F. Gang, “Coordinated Framework for Spectrum Allocation and User Association in 5G HetNets with mmWave,” IEEE Transactions on Mobile Computing, vol. 21, no. 4, pp. 1226–1243, April 2022. DOI: 10.1109/TMC.2020.3022681

• H. Fawaz, M. El Helou, S. Lahoud, and K. Khawam, “A Reinforcement Learning Approach to Queue-Aware Scheduling in Full-Duplex Wireless Networks,” Elsevier Computer Networks, vol. 189, April 2021. DOI: 10.1016/j.comnet.2021.107893

• H. Fawaz, K. Khawam, S. Lahoud, S. Martin, and M. El Helou, “Cooperation For Spreading Factor Assignment in a Multi-Operator LoRaWAN Deployment,” IEEE Internet of Things Journal, vol. 8, no. 7, pp. 5544–5557, April 2021. DOI: 10.1109/JIOT.2020.3031681

• H. Taleb, K. Khawam, S. Lahoud, M. El Helou, and S. Martin, “A Fully Distributed Approach for Joint User Association and RRH Clustering in Cloud Radio Access Networks,” Elsevier Computer Networks, vol. 182, December 2020. DOI: 10.1016/j.comnet.2020.107445

• H. Fawaz, S. Lahoud, and M. El Helou, “Queue-Aware Scheduling in Full-Duplex Wireless Networks,” Springer Wireless Networks, vol. 26, no. 6, pp. 3967–3983, August 2020. DOI: 10.1007/s11276-020-02308-0

• H. Fawaz, K. Khawam, S. Lahoud, and M. El Helou, “A Game Theoretic Framework for Power Allocation in Full-Duplex Wireless Networks,” IEEE Access, vol. 7, pp. 174013–174027, December 2019. DOI: 10.1109/ACCESS.2019.2957316

• R. El Chall, S. Lahoud, and M. El Helou, “LoRaWAN Network: Radio Propagation Models and Performance Evaluation in Various Environments in Lebanon,” IEEE Internet of Things Journal, vol. 6, no. 2, pp. 2366–2378, April 2019. DOI: 10.1109/JIOT.2019.2906838

• M. Ibrahim, M. Chamoun, R. Kilany, M. El Helou, and N. Rouhana, “COMIQUAL: Collaborative Measurement of Internet Quality,” Springer Annals of Telecommunications - Special Issue on Cloud Communications and Networking, vol. 73, no. 3-4, pp. 279–291, April 2018. DOI: 10.1007/s12243-017-0585-4

• K. Khawam, S. Lahoud, M. Ibrahim, M. Yassin, S. Martin, M. El Helou, and F. Moety, “Radio Access Technology Selection in Heterogeneous Networks,” Elsevier Physical Communication - Special Issue on Radio Access Network Architectures and Resource Management for 5G, vol. 18, no. 2, pp. 125– 139, March 2016. DOI: 10.1016/j.phycom.2015.10.004

• M. El Helou, S. Lahoud, M. Ibrahim, K. Khawam, B. Cousin, and D. Mezher, “A Hybrid Approach for Radio Access Technology Selection in Heterogeneous Wireless Networks,” Springer Wireless Personal Communications, vol. 86, no. 2, pp. 789–834, January 2016. DOI: 10.1007/s11277-015-2957-2

• M. El Helou, M. Ibrahim, S. Lahoud, K. Khawam, D. Mezher, and B. Cousin, “A Network-assisted Approach for RAT Selection in Heterogeneous Cellular Networks,” IEEE Journal on Selected Areas in Communications - Special Issue on Recent Advances in Heterogeneous Cellular Networks, vol. 33, no. 6, pp. 1055–1067, June 2015. DOI: 10.1109/JSAC.2015.2416987

• R. Naja, M. El Helou, and S. Tohmé, “WiMAX Double Movable Boundary Scheme in Vehicle to Infrastructure Communication Scenario,” Springer Wireless Personal Communications, vol. 67, no. 2, pp. 387–413, November 2012. DOI: 10.1007/s11277-011-0389-1

• A. Loubany, A. E. Samhat, S. Lahoud, and M. El Helou, “Battery-Less LoRaWAN Network using Energy Harvesting: Improving Network Throughput,” in Proc. IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC'22), September 2022.

• F. Yassine, M. El Helou, S. Lahoud, and O. Bazzi, “Performance of Narrowband IoT Link Adaptation with Rate and Energy Objectives,” in Proc. International Multidisciplinary Conference on Engineering Technology (IMCET'21), Beirut, Lebanon, December 2021. DOI: 10.1109/IMCET53404.2021.9665562

• F. Yassine, M. El Helou, O. Bazzi, and S. Lahoud, “Investigation on Narrowband IoT Link Adaptation with Rate and Energy Objectives,” in Proc. International Wireless Communications and Mobile Computing Conference (IWCMC'21), Harbin, China, June 2021. DOI: 10.1109/IWCMC51323.2021.9498738

• I. Martinez, F. Nouvel, S. Lahoud, P. Tanguy, and M. El Helou, “On the Performance Evaluation of LoRaWAN with Re-transmissions under Jamming,” in Proc. IEEE Symposium on Computers and Communications (ISCC'20), Rennes, France, July 2020. DOI: 10.1109/ISCC50000.2020.9219644

• H. Fawaz, K. Khawam, S. Lahoud, and M. El Helou, “A Game Theoretic Approach for Power Allocation in Full Duplex Wireless Networks,” in Proc. IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC'19), Istanbul, Turkey, September 2019. DOI: 10.1109/PIMRC.2019.8904134

• K. Boulos, K. Khawam, M. El Helou, M. Ibrahim, S. Martin, and H. Sawaya, “A Hybrid Approach for RRH Clustering in Cloud Radio Access Networks based on Game Theory,” in Proc. ACM International Symposium on Mobility Management and Wireless Access (MobiWac'18), Montreal, Canada, October 2018. DOI: 10.1145/3265863.3265880

• K. Boulos, K. Khawam, M. El Helou, M. Ibrahim, H. Sawaya, and S. Martin, “An Efficient Scheme for BBU-RRH Association in C-RAN Architecture for Joint Power Saving and Re-association Optimization,” in Proc. IEEE International Conference on Cloud Networking (CloudNet'18), Tokyo, Japan, October 2018. DOI: 10.1109/CloudNet.2018.8549295

• H. Taleb, M. El Helou, S. Lahoud, K. Khawam, and S. Martin, “Multi-Objective Optimization for RRH Clustering in Cloud Radio Access Networks,” in Proc. International Conference on Computer and Applications (ICCA'18), Beirut, Lebanon, July 2018. DOI: 10.1109/COMAPP.2018.8460446

• H. Fawaz, S. Lahoud, and M. El Helou, “A Queue-Aware Discrete Scheduling Simulator for Full-Duplex OFDMA Wireless Networks,” in Proc. International Conference on Computer and Applications (ICCA'18), Beirut, Lebanon, July 2018. DOI: 10.1109/COMAPP.2018.8460235

• H. Taleb, M. El Helou, K. Khawam, S. Lahoud, and S. Martin, “Joint User Association and RRH Clustering in Cloud Radio Access Networks,” in Proc. International Conference on Ubiquitous and Future Networks (ICUFN'18), Prague, Czech Republic, July 2018. DOI: 10.1109/ICUFN.2018.8436797

• H. Taleb, M. El Helou, S. Lahoud, K. Khawam, and S. Martin, “An Efficient Heuristic for Joint User Association and RRH Clustering in Cloud Radio Access Networks,” in Proc. International Conference on Telecommunications (ICT'18), Saint-Malo, France, June 2018. DOI: 10.1109/ICT.2018.8464852

• H. Fawaz, S. Lahoud, M. El Helou, and J. Saad, “Queue-Aware Priority Based Scheduling and Power Allocation in Full-Duplex OFDMA Cellular Networks,” in Proc. International Conference on Telecommunications (ICT'18), Saint-Malo, France, June 2018. DOI: 10.1109/ICT.2018.8464919

• H. Fawaz, S. Lahoud, M. El Helou, and M. Ibrahim, “Queue-Aware Scheduling in Full Duplex OFDMA Wireless Networks with Imperfect Channel State Information,” in Proc. European Wireless Conference (EW'18), Catania, Italy, May 2018.

• K. Boulos, M. El Helou, K. Khawam, M. Ibrahim, S. Martin, and H. Sawaya, “RRH Clustering in Cloud Radio Access Networks with Re-association Consideration,” in Proc. IEEE Wireless Communications and Networking Conference (WCNC'18), Barcelona, Spain, April 2018. DOI: 10.1109/WCNC.2018.8377287

• M. Ezzaouia, C. Gueguen, M. El Helou, M. Ammar, X. Lagrange, and A. Bouallegue, “A Dynamic Transmission Strategy Based on Network Slicing for Cloud Radio Access Networks,” in Proc. IEEE IFIP Wireless Days Conference (WD'18), Dubai, United Arab Emirates, April 2018. DOI: 10.1109/WD.2018.8361692

• H. Fawaz, S. Lahoud, M. El Helou, and M. Ibrahim, “Optimal Max-SINR Scheduling in Full-Duplex OFDMA Cellular Networks with Dynamic Arrivals,” in Proc. IEEE IFIP Wireless Days Conference (WD'18), Dubai, United Arab Emirates, April 2018. DOI: 10.1109/WD.2018.8361720

• K. Boulos, M. El Helou, M. Ibrahim, K. Khawam, H. Sawaya, and S. Martin, “Interference-Aware Clustering in Cloud Radio Access Networks,” in Proc. IEEE International Conference on Cloud Networking (CloudNet'17), Prague, Czech Republic, September 2017. DOI: 10.1109/CloudNet.2017.8071536

• H. Taleb, M. El Helou, K. Khawam, S. Lahoud, and S. Martin, “Centralized and Distributed RRH Clustering in Cloud Radio Access Networks,” in Proc. IEEE Symposium on Computers and Communications (ISCC'17), Crete, Greece, July 2017. DOI: 10.1109/ISCC.2017.8024671

• H. Fawaz, S. Lahoud, M. El Helou, and M. Ibrahim, “Max-SINR Scheduling in Full-Duplex OFDMA Cellular Networks with Dynamic Arrivals,” in Proc. IEEE Symposium on Computers and Communications (ISCC'17), Crete, Greece, July 2017. DOI: 10.1109/ISCC.2017.8024577

• K. Boulos, M. El Helou, and S. Lahoud, “RRH Clustering in Cloud Radio Access Networks,” in Proc. International Conference on Applied Research in Computer Science and Engineering (ICAR'15), Lebanon, October 2015. DOI: 10.1109/ARCSE.2015.7338135

• M. El Helou, M. Ibrahim, S. Lahoud, and K. Khawam, “Optimizing Network Information for Radio Access Technology Selection,” in Proc. IEEE Symposium on Computers and Communications (ISCC'14), Madeira, Portugal, June 2014. DOI: 10.1109/ISCC.2014.6912591

• M. El Helou, S. Lahoud, M. Ibrahim, and K. Khawam, “Satisfaction-based Radio Access Technology Selection in Heterogeneous Wireless Networks,” in Proc. IEEE IFIP Wireless Days Conference (WD'13), Valencia, Spain, November 2013. DOI: 10.1109/WD.2013.6686461

• M. El Helou, M. Ibrahim, S. Lahoud, and K. Khawam, “Radio Access Selection Approaches in Heterogeneous Wireless Networks,” in Proc. IEEE International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob'13), Lyon, France, October 2013.DOI: 10.1109/WiMOB.2013.6673408

• M. El Helou, S. Lahoud, M. Ibrahim, and K. Khawam, “A Hybrid Approach for Radio Access Technology Selection in Heterogeneous Wireless Networks,” in Proc. European Wireless Conference (EW'13), Guildford, United Kingdom, April 2013.

• H. Fawaz, S. Lahoud, M. El Helou, and M. Ibrahim, “On Scheduling in Full-Duplex OFDMA Cellular Networks,” in LAAS International Science Conference (LAAS'17), Hadath, Lebanon, April 2017 (abstract and oral presentation).

• M. Chamoun, M. Ibrahim, R. Kilany, N. Rouhana, and M. El Helou, “COMIQUAL: Collaborative Measurement of Internet Quality in Lebanon,” in LAAS International Science Conference (LAAS'15), Beirut, Lebanon, April 2015 (abstract and oral presentation).

• M. El Helou, “Un tour d'horizon sur les réseaux hétérogènes : architectures, solutions et perspectives,” in Symposium on Broadband Networks and Fast Internet (RELABIRA'11), Baabda, Lebanon, March 2011 (oral presentation).

My teaching activities focus on telecommunication networks and include the following courses:

• Wireless Communications
• Mobile Networks
• Optical Systems and Networks
• Network Engineering
• Internet of Things Technologies