Chapter 16 481
W-CDMA Uplink Digital Modulation for Receiver Test
Setting Up a Multiple PRACH Signal
3. Press More (1 of 3) > More (2 of 3) > PRACH Pulse (RPS23).
This will enable an output trigger that corresponds to the beginning of each PRACH.
4. Press
Mode Setup to return to the top-level W-CDMA menu.
Generating the Baseband Signal
Return to the first-level W-CDMA menu and turn the W-CDMA format on.
This step can be performed at anytime during the setup. The advantage of turning the format on before
setting up the signal, if you have a spectrum analyzer or some other measuring equipment connected, is you
can see the changes as they are made.
Configuring the PRACH Code Setup
In this procedure you will learn how to set the parameters for controlling the transmission for the various
components that make up the PRACH. In addition, you will set the parameters that control the PRACH
transmission as a whole. It is divided up into four tasks:
• “Accessing the Code Setup Table” on page 481
• “Controlling the PRACH Transmission” on page 482
• “Setting the Control Part Parameters” on page 485
• “Setting the Data Part Parameters” on page 486
Accessing the Code Setup Table
Press
Link Control > PhyCH Setup > PRACH Code Setup.
This takes you into the table editor where you can set the parameters for the message part and preamble. You
can also set the number of transmissions for the PRACH configuration. The parameters set within this table
apply to all eight UEs.
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