User`s guide

Chapter 8 239
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 239
• “Inserting an Additional Channel” on page 239
• “Modifying the Walsh Code” on page 239
• “Modifying the Data” on page 239
• “Modifying the Code Domain Power” on page 240
• “Generating the Waveform” on page 240
• “Configuring the RF Output” on page 240
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.