Chapter 16 497
W-CDMA Uplink Digital Modulation for Receiver Test
Overload Testing with Multiple PRACHs—Multiple ESGs
Overload Testing with Multiple PRACHs—Multiple ESGs
With the advanced feature of transmitting multiple PRACHs, you can perform base transceiver station
overloading using two ESGs. This gives you the capability of transmitting up to 16 UEs. When the Frame
Sync Trigger signal is used for both ESGs, they will synchronize to within one chip of the base station frame
synchronization signal. When ESG 2 is synchronized using the ESG Sync Pulse signal, you may experience
an additional half chip delay from ESG 2. Figure 16-34 shows the multiple ESG setup and Table 16-2 list the
signals shown in the drawing and their respective ESG rear panel connections.
Figure 16-34 Multiple ESG Setup
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