If you do use a host PC with the TAS boxes, the 3GPDP enhancement supports an abundance of test possibilities running under Windows. As you generate and play back what can be exhaustive combinations of channel conditions, you can analyze colorful 3-D histogram displays that let you quickly look at results and change settings. Familiar Windows Toolbar utilities, icons, and graphical folder management features support this process. A word about the 3GPDP option's Birth-Death mode. Aside from its sinister sounding name, all it does is randomly vary the location of multipath components along a delay-spread axis.
Active paths move along the delay axis at a rate defined by a periodic sinusoidal function.
Like the Birth-Death mode, you can program the number of active paths. You can also vary the rate and range of delay-spread variation of each active path, as well as modify path loss, modulation characteristics, and Doppler attributes. Last, but not least, TAS's 3GPDP option can be integrated into automated test environments by means of a standardized remote command set. The company also supplies software-based Wizards that can simplify the construction of custom 3G test scenarios.