Now showing items 1-7 of 7

  • The Capacity and Interference Statistics of High Car Traffic W-CDMA Street Cross-Shaped Micro-Cells (Uplink Analysis), 

    Taha-Ahmed, B.; Calvo-Ramon, M.; de Haro-Ariet, L. (Společnost pro radioelektronické inženýrství, 2004-04)
    Since interference is related to the capacity and performance of W-CDMA system, it is necessary to investigate the interference characteristics (the mean value and the variance). Thus, the uplink capacity and the interference ...
  • Impact of Ultra Wide Band (UWB) on Macrocell Downlink of DCS-1800 and GSM-900 Systems 

    Taha-Ahmed, B.; Calvo-Ramon, M.; Haro-Ariet, L. D. (Společnost pro radioelektronické inženýrství, 2005-04)
    The effect of UWB interference on the DCS-1800 and GSM-900 downlink is studied for different UWB power density. For high UWB power density (-70 dBm/MHz), the effect of UWB signals is very high when the distance between UWB ...
  • Intelligent FDSS Overlay on GSM System (Uplink Analysis) 

    Taha-Ahmed, B.; Calvo-Ramon, M.; Haro-Ariet, L. D. (Společnost pro radioelektronické inženýrství, 2005-04)
    The overlay of an intelligent frequency diversity spread spectrum system (FDSS) on the (GSM) system is studied. The uplink capacity of both systems is given using a model of 36 hexagonal macrocells. Performance of GSM and ...
  • On the High Altitude Platform (HAP) W-CDMA System Capacity 

    Taha-Ahmed, B.; Calvo-Ramon, M.; de Haro-Ariet, L. (Společnost pro radioelektronické inženýrství, 2004-06)
    The performance of a downlink power control model, based on a n-th power distance law, is evaluated for high altitude platform station (HAPS) W-CDMA systems. The downlink capacity using this model is compared with the ...
  • On the UMTS Downlink Capacity in (Open Rural and Countryside) Zone Near Deep Space Network (DSN) Installations 

    Taha-Ahmed, B.; Calvo-Ramon, M.; de Haro-Ariet, L. (Společnost pro radioelektronické inženýrství, 2003-09)
    The UMTS macrocell downlink capacity is evaluated for macrocells that operate at the same frequency as the Deep Space Network (DSN) and that are nearby the DSN installations. It has been found that the cell capacity is not ...
  • The Performance of W-CDMA Highways Infostations 

    Taha-Ahmed, B.; Calvo-Ramon, M.; de Haro-Ariet, L. (Společnost pro radioelektronické inženýrství, 2004-04)
    The expected value of the signal to noise ratio of W-CDMA infostations is derived. A model of 5 cells is used to analyze the system performance. The infostations are assumed to exist in rural zones. The performance of the ...
  • W-CDMA Uplink Capacity and Interference Statistics of a LongGroove-Shaped Road Microcells Using A Hybrid Propagation Model 

    Taha-Ahmed, B.; Calvo-Ramon, M.; de Haro-Ariet, L. (Společnost pro radioelektronické inženýrství, 2003-09)
    The uplink capacity and the interference statistics of the sectors of a long groove-shaped road W-CDMA microcell are studied. A model of 9 microcells in a groove-shaped road is used to analyze the uplink. A hybrid model ...