Hi, my name is Marvin J. Sánchez Garache and I am from Nicaragua. I obtained my engineer in electronic degree from the National University of Engineering of Nicaragua (UNI) in 1995. My thesis was completed while working for the Telecommunication department at UNI in remote sensing through packet radio networks. This work have given me experience in both software and hardware design as well as practical skills in radio communications. I have worked as a lecturer of digital and analog communications at UNI since 1995. Since 1996 I have got involved in a sandwich program sponsored by SIDA (Swedish International Development Cooperation Agency) and I have become a part time Ph.D. student of the Radio Communication Systems group, department of Signals, Sensors, and Systems at the Royal Institute of Technology (KTH). As part of this program I visit KTH 3 to 4 months per year to work on research in "Ah hoc Wireless Networks" and received education on Wireless Network issues; the rest of my time I teach at UNI.

 Sánchez M., Zander, J., "Adaptive Antennas in Spatial TDMA Multihop Packet Radio Networks". Radio Scientific Conference , RVK 99, Karlskrona, Sweden. June, 1999.

 Sánchez M., Giles T., Zander J., "CSMA/CA with Beam Forming Antennas in Multihop Packet Radio". Swedish workshop on Wireless Ad hoc Networks 2001, Stockholm, Sweden. March 2001.

 Sánchez M., "Adquisición Remota de Datos Empleando Packet Radio". Primera Feria Tecnológica UNI, Managua, Nicaragua. Noviembre 2000.

  Sánchez M., Zander J., Giles T., "Combined Routing & Scheduling for Spatial TDMA in Multihop Ad hoc Networks". Swedish workshop on Wireless Ad hoc Networks 2002, Stockholm, Sweden. March 2002.

  H. Schibel, F. Castillo, M. Sánchez, "Desarrollo de Software para Predicción de Radiopropagación". COPIMERA 2001, Noviembre 2001, Quito, Ecuador.

  Sánchez M., Zander J., Giles T., "Combined Routing & Scheduling for Spatial TDMA in Multihop Ad hoc Networks". IEEE 2002 International Symposium on Wireless Personal Multimedia Communications, Honolulu, Octuber 2002.

  Sánchez M., "Multiple Access Protocols with Smart Antennas in Multihop Ad Hoc Rural-Area Networks". Licentiate thesis, Radio Communination Systems, Department S3. Royal Institute of Technology, Stockholm, Sweden, June 2002.

 Sánchez, M., "Sistemas de Antenas Inteligentes". TecnoUNI2002, Universidad Nacional de Ingeniería (UNI), Managua Nicaragua, Noviembre 2002.

 Wireless UNI Network (WUNet)

WUNET aims to provide communications where no communications exist due to remoteness and poverty. Consequently all solutions must be extremely inexpensive. The project will concentrate on data communications with user friendly self-organizing terminals. WUNet is an experimental project with the main output being graduates qualified in radio design, HowTos, feedback to research effort of the Electrical and Computing Faculty (FEC) of UNI.

 Remote Sensing Using Packet Radio Networks

Packet Radio networks are suitable solutions to provide data transmissions in rural applications. The aim of this project is to develop hardware and software to supervise physical variables like deep water level, temperature, wind speed and direction as well as seismic activity to help in the prevention of natural disasters.