<< Pulse para mostrar la Tabla de Contenidos >>

Navegación:  Cartography and Planning > Planning Process > 3G Mobile Communications > UMTS / CDMA Mobile Terminal Parameters


Inicio  Anterior  Siguiente


All CDMA parameters of the mobile terminal are initially configured by default when selecting the study service (technology), with values ​​appropriate or typical of the simulation type to be performed. It is recommended, however, to be checked and specified by the user to adapt their simulation to the equipment realit that is intended to simulate.

CDMA parameters are only present when a third- and fourth-generation radio service in the "Mobile Service" group is used.


Depending on the path type to simulate, the Downlink or Uplink parameters specified in the CDMA parameters will be used in the calculation.

The following parameters are not present in all services, since some of them are meaningless:

Binary Rate (Kbps). Source rate or rate perceived by the user, not including channel coding or other processes that modify it.

Power range (dB). CDMA systems use fast power control to compensate for multipath fading. The "effective" maximum value of averaged power with respect to rapid variations is obtained as the peak power minus a power range. Typically between 0 and 4 dB.

Required EB/N0 ratio (dB).  In CDMA systems the EB/N0 ratio value required to declare a point as covered, rather than receive threshold, is specified and its value represents the level of signal needed above interfering signals needed to establish the communication.

Charge factor (%).  It represents the average charge factor in the cell. It is usual to consider values ​​slightly larger than uplink.

Noise factor (dB). Noise factor of the mobile terminal..

SHO multipath gain (dB). Another effect of the reception diversity associated with the handover is a decrease in the required EB/N0 ratio. As in the previous case, if the EB/N0 value specified already takes into account the gain per handover it is not necessary to apply any correction. Typical values are between 0 and 2 dB.

Sensitivity (dBm). Power needed at reception, is calculated from previous parameters when clicking the link "Calculate sensitivity".