Ahmed, B. T., and M. C. Ramon,  "WiMAX in high altitude platforms (HAPs) communications over large cities",  Systems, Signals and Devices, 2009. SSD '09. 6th International Multi-Conference on, pp. 1-4, March, 2009.

Ahmed, B. T., M. C. Ramon, and L. H. Ariet,  "On the Impact of Ultra Wide Band (UWB) System on Macrocell Downlink of IS-136 Systems",  Wireless Communication Systems, 2006. ISWCS '06. 3rd International Symposium on, pp. 645-649, Sept, 2006.

Ahmed, B. T.,  "WiMAX in High Altitude Platforms (HAPs) Communications",  Wireless Technology, 2006. The 9th European Conference on, pp. 245-248, Sept, 2006.

Taha-Ahmed, B.,  "Proposed FDSS UWB communications system",  Wireless Technology, 2005. The European Conference on, pp. 137-140, Oct, 2005.

Taha-Ahmed, B., M. Calvo-Ramon, and L. de Haro-Ariet,  "W-CDMA uplink capacity and interference statistics of a long tunnel cigar-shaped microcells (underground train case)",  Personal, Indoor and Mobile Radio Communications, 2004. PIMRC 2004. 15th IEEE International Symposium on, vol. 3, pp. 2231-2235 Vol.3, Sept, 2004.

Ahmed, B. T., M. C. Ramon, and de. Haro L Ariet,  "On the capacity of air-ground W-CDMA system (downlink analysis)",  Vehicular Technology Conference, 2003. VTC 2003-Spring. The 57th IEEE Semiannual, vol. 1, pp. 103-106 vol.1, April, 2003.

Ahmed, B. T., M. C. Ramon, and L. H. Ariet,  "Quasi-optimum downlink power control of high altitude platform W-CDMA system",  Vehicular Technology Conference, 2003. VTC 2003-Spring. The 57th IEEE Semiannual, vol. 4, pp. 2476-2479 vol.4, April, 2003.

Ahmed, B. T., M. C. Ramon, and L. de Haro y Ariet,  "The capacity of air-ground W-CDMA system (uplink analysis)",  Personal, Indoor and Mobile Radio Communications, 2002. The 13th IEEE International Symposium on, vol. 1, pp. 335-338 vol.1, Sept, 2002.

Ahmed, B. T., M. C. Ramon, and de. Hao L Ariet,  "Partial overlay of intelligent FDSS on microwave point to point link using subchannel suppression, downlink analysis of the FDSS system",  Personal, Indoor and Mobile Radio Communications, 2002. The 13th IEEE International Symposium on, vol. 2, pp. 770-773 vol.2, Sept, 2002.