Chapter 10 337
CDMA Digital Modulation
IS-95A Modulation
Creating a User-Defined CDMA State
In this procedure, you learn how to customize a predefined CDMA setup, starting with a forward 32 channel
CDMA setup and modifying the setup by adding one channel and changing some of the setup’s default
values.
This section teaches you how to perform the following tasks:
• “Selecting a CDMA Setup” on page 337
• “Inserting an Additional Channel” on page 337
• “Modifying the Walsh Code” on page 337
• “Modifying the Data” on page 337
• “Modifying the Code Domain Power” on page 338
• “Generating the Waveform” on page 338
• “Configuring the RF Output” on page 338
Selecting a CDMA Setup
1. Press
Preset.
2. Press
Mode > CDMA > Arb IS-95A.
3. Press
Setup Select > 32 Ch Fwd.
Inserting an Additional Channel
1. Press
CDMA Define > Edit Channel Setup.
2. Highlight Traffic in the Type column of row 8.
3. Press
Insert Row > Traffic > Return.
Modifying the Walsh Code
1. Highlight the Walsh value (38) on table row 8.
2. Press
Edit Item > 45 > Enter.
Modifying the Data
1. Highlight the Data value (RANDOM) on table row 8.
2. Press
Edit Item > 00001000 > Enter.
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