Alberto Lopez Toledo

I received my Engineer Degree in Computer Science (1st Class Honours) from the University of Murcia (UMU), Spain. In 1999 I began my Ph.D. in the Department of Communications and Information Engineering, in the group ANTS at the same university, and joined the ISABEL group at Department of Telematic Systems Engineering, Universidad Politécnica de Madrid (UPM), as a visitor research assistant. There I was involved in several national and international R&D projects in the field of wireless and mobile networks. I received an Advanced Diploma in Computer Science (M. Phil) from UMU in July 2002.

In the summer of 2002 I moved to New York where I received a M. Sc. in Electrical Engineering (Wireless & Mobile Communications) from the Department of Electrical Engineering at Columbia University in the City of New York in May 2003. I am currently pursuing my Ph.D. in the same University under the supervision of Prof. Xiaodong Wang .

I am a recipient of the "La Caixa" Foundation and the Rafael del Pino foundation Scholarhips.

Research Interests

• MIMO wireless and TCP
• IEEE 802.11
• IP mobility
• Wireless & Ad Hoc networks
• Networking & P2P Systems
• QoS Provision in mobile environments
• IPv6

Past Research Projects

• Wireless & Mobile
  • IST project MIND: Mobile IP based Network Developments
  • IST project BRAIN: Broadband Radio Access for IP based Networks
• IPv6
  • IST project EURO6IX: IPv6 backbone for Europe
  • IST project LONG: Laboratories over Next Generation Networks

• [10] Alberto Lopez Toledo, Tom Vercauteren and Xiaodong Wang. Adaptive Optimization of CSMA/CA MAC Protocols Based on Bayesian State Estimation. Adaptation in Wireless Communication networks. Vol II: Adaptive techniques in wireless networks CRC Press. Q4 2007.

• [9] Alberto Lopez Toledo and Xiaodong Wang. Robust Detection of MAC Layer Denial-of-Service Attacks in Wireless Networks. Submitted

• [8] Alberto Lopez Toledo and Xiaodong Wang. Multipath Data Dissemination in Sensor Networks using Network Coding over Braided Meshes . IEEE Transactions in Mobile Computing. Under Review

• [7] Alberto Lopez Toledo and Xiaodong Wang. Robust Detection of Selfish Misbehavior in Wireless Networks. IEEE Journal on Selected Areas in Communications, special issue on Non-Cooperative Behavior in Networking. Volume 25, Number 6, pp 1124 - 1134. February 2007.

• [6] Tom Vercauteren, Alberto Lopez Toledo and Xiaodong Wang. Batch and Sequential Bayesian Estimators of the Number of Active Terminals in an IEEE 802.11 Network. IEEE Transactions in Signal Processing. Volume 55, Number 2, pp 437 - 450. February 2007.

• [5] Alberto Lopez Toledo, Tom Vercauteren and Xiaodong Wang. Adaptive Optimization of IEEE 802.11 DCF Based on Bayesian Estimation of the Number of Competing Terminals. IEEE Transactions in Mobile Computing. Volume 5, Number 9, pp 1283 - 1296. September 2006.

• [4] Alberto Lopez Toledo, Xiaodong Wang and Ben Lu. A Cross-Layer TCP Modelling Framework for MIMO Wireless Systems. IEEE Transactions in Wireless Communications, Volume 5, Number 4, pp 920-929. April 2006.

• [3] Alberto Lopez Toledo and Xiaodong Wang. TCP Performance Over Wireless MIMO
  Channels with ARQ and Packet Combining. IEEE Transactions in Mobile Computing, Volume 5, Number 3, pp 208-223. March 2006.

• [2] Manner, J., Lopez, A., Mihailovic, A., Velayos, H., Heapworth, H., Khouaja, Y., Evaluation of Mobility and QoS Interaction, Elsevier Science Publisher, Computer Networks (ComNet), Volume 38, Issue 2, pages 137 – 163. 5 February 2002.

• [1] Lopez, A. Manner, J., Mihailovic, A., Velayos, H., Heapworth, E., Khouaja, Y., A Study on QoS for IP-based Radio Access Networks. Lecture Notes in Computer Science (LNCS) "Evolutionary Trends of the Internet”, Volume 2170, pp 139-157. September 2001.

• [19] Alberto Lopez Toledo and Xiaodong Wang. A Robust Kolmogorov-Smirnov Detector for Misbehavior in IEEE 802.11 DCF. IEEE International Conference on Communications ICC 2007. June 24-27, 2007. Glasgow, UK.

• [18] Alberto Lopez Toledo and Xiaodong Wang. Efficient Multipath in Sensor Networks using Diffusion and Network Coding. 4oth Annual Conference on Information Sciences and systems (CISS 2006). March22-24, 2006. Princeton, NJ.

• [17] Alberto Lopez Toledo and Xiaodong Wang. Modelling the Performance of TCP/ARQ over MIMO Rayleigh Fading Channels. IEEE International Conference on Commuinication ICC 2006. June 11-15, 2006. Istambul, Turkey.

• [16] Alberto Lopez Toledo , Tom Vercauteren and Xiaodong Wang. Optimizing IEEE 802.11 DCF using Bayesian Estimators of the Network State . IEEE International Conference on Acoustics, Speech, and Signal Processing ICASSP 2005. March 19-23, 2005, Philadelphia, PA .

• [15] Tom Vercauteren, Alberto Lopez Toledo and Xiaodong Wang. Online Bayesian Estimation of Hidden Markov Models with Unknown Transition Matrix and Applications to IEEE 802.11 Networks. IEEE International Conference on Acoustics, Speech, and Signal Processing ICASSP 2005. March 19-23, 2005, Philadelphia, PA .

• [14] Tom Vercauteren, Alberto Lopez Toledo and Xiaodong Wang. Estimating the Number of Competing Terminals in an IEEE 802.11 Wireless Network. The Second Workshop on Monte Carlo Methods, 27-28 August 2004, Boston, MA. Invited.

• [13] Alberto Lopez Toledo and Xiaodong Wang. Effect of MIMO wireless channels on TCP. IEEE Wireless Communications and Networking Conference (WCNC 2004), 21-25 March 2004, Atlanta, GA.

• [12] Manner, J., Burness, L., Hepworth, E., Lopez, A., and Mitjana, E., Provision of QoS in Heterogeneous Wireless IP Access Networks, Proc. 13th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2002, 15-18 September 2002, Lisbon, Portugal.

• [11] Burness, L., Eisl, J., Georganopoulos, N., Hepworth, E., Lopez, A. (editor), and Manner, J., QoS Provision and Mobility Management in MIND Access Networks and Ad Hoc Extensions, Proc. IST Mobile Communications Summit 2002, 16 -19 June, Thessaloniki, Greece.

• [10] Ruiz, P., Lopez A. Demostrador de movilidad IPv6 para redes móviles de 4G, Proc. Jornadas Técnicas de RedIris JT2001, 24-26 October 2001. Pamplona, Spain.

• [9] Burness, L., Hepworth, E., Lopez, A. and Manner, J., Architecture for Providing QoS in an IP-based Mobile Network, Proc. IST Mobile Communications Summit 2001, 9 -12 September, Barcelona, Spain.

• [8] Robles, T., Lopez, A., Velayos, H., Propuesta de una Arquitectura para una Futura Red de Acceso Basada en IP, Proc. III Jornadas de Ingenieria Telemhtica JITEL '01, 19 -21 September 2001. Barcelona, Spain.

• [7] Lopez, A., Velayos, H., Robles, T., Villaseñor, N., Provisión de Calidad de Servicio Basada en Reservas para Entornos Móviles, Proc. III Jornadas de Ingenieria Telemática JITEL '01, 19 -21 September 2001. Barcelona, Spain.

• [6] Lopez, A., Velayos, H., Manner, J., Villaseñor, N., Reservation Based QoS for Mobile Environments, Proc. 1st IEEE Workshop on Services and Applications on the Wireless Public Interface ASWN '01, 25-27 July 2001, Evry (Paris) France.

• [5] Manner, J., Lopez, A., Mihailovic, A., Velayos, H., Heapworth, H., Khouaja, Y., Mobility Management and QoS in mobile access networks, 2nd International Workshop on Broadband Radio Access IP Networks (BRAIN), 20 February 2001, Yokoshaka, Japan.

• [4] Velayos, H., Manner, J., Lopez, A., Fernández, D. And Moreno, J. I., Requirements for Network Services in BRAIN project, 1st International Workshop on Broadband Radio Access IP Networks (BRAIN), 20 November 2000, London, UK.

• [3] Adjih, C., A1 Agha, K., Dumontent, F., Jacquet, P., Lopez, A. and Viennot, L., Quality of Service Aspects for BRAIN Architecture, Proc. 11th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2000, 18-21 September 2000, London, UK.

• [2] Pon, C., Chait, M., Lopez, A., Measurements of Rock Size Distributions with Neural Networks, Proc. V Ibero American Symposium in Pattern Recognition, SIARP 2000, 11-13 September 2000. Lisbon, Portugal.

• [1] Gómez, A., Lopez, A., Control de Tráfico mediante Class-Based Queuing gestionado por RSVP usando Linux como router con capacidad de QoS, Proc. II Jornadas de Ingenieria Telemática JITEL '99, 15 -17 August 1999. Madrid, Spain.

• Lopez, A., ’QoS in IPv6’ / ‘6over4’, Madrid IPv6 Global Summit 2002. Tutorial sessions, 13-15 March 2002. Madrid, Spain.

• Lopez, A., QoS in IPv6, Madrid IPv6 Global Summit. Tutorial session, 29-31 January and 1 February 2001. Madrid, Spain.

• Lopez, A., QoS Provision for Mobile Access Networks using IPv6, Madrid IPv6 Global Summit, 29-31 January and 1 February 2001. Madrid, Spain. (Invited talk).