Ahmed, B. T., and M. C. Ramon,  "On the Impact of Ultra-Wideband (UWB) on Macrocell Downlink of UMTS and CDMA-450 Systems",  Electromagnetic Compatibility, IEEE Transactions on, vol. 50, no. 2, pp. 406-412, May, 2008.

Ahmed, B. T.,  "On High Altitude Platforms (HAPs) UMTS-HSDPA",  Wireless Technology, 2006. The 9th European Conference on, pp. 223-226, Sept, 2006.

Ahmed, B. T., M. C. Ramon, and L. H. Ariet,  "On the UMTS-HSDPA in High Altitude Platforms (HAPs) Communications",  Wireless Communication Systems, 2006. ISWCS '06. 3rd International Symposium on, pp. 704-708, Sept, 2006.

Ahmed, B. T., M. C. Ramon, and L. H. Ariet,  "LEO satellite W-CDMA downlink pole capacity",  Wireless Technology, 2004. 7th European Conference on, pp. 173-176, Oct, 2004.

Taha-Ahmed, B., M. Calvo-Ramon, L. Haro-Ariet, and R. M. Rodriguez-Osorio,  "On the UMTS macrocells downlink capacity in open rural zone near shaded Deep Space Network (DSN) installations",  Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th, vol. 7, pp. 5245-5249 Vol. 7, Sept, 2004.

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.