User`s guide

38 User’s Guide
Signal Studio for WiMAX E4438C Option H13
WiMAX Project Parameters
Payload Data
• 'Get' Button: When the 'Get' Button is pressed, the selected sequence with the specified
length is pasted to the 'Payload Bytes' field.
• Payload Data Length: This field is referred as the payload data when the 'Generate
MAC PDU' button is pressed. When the 'Get' Button is pressed, the selected sequence
with the specified length is pasted here. It is also a user-editable field. If the number of
bytes of data in the Payload Data box is shorter than the 'Length' and the 'Generate
MAC PDU' button is pressed, the software will fill the remaining needed bytes with
0xFF. This mismatch between the ’Length’ value and the number of data bytes in the
box may occur if the user forgets to select ’Get’ after entering the ’Length’ value or if he
inputs data from a Hex File or User Entered Data.
Figure 20 Payload Data View
Buttons
• Generate MAC PDU: Based on the 'MAC Header', ’CRC on\off’ settings and 'Payload
Data'. Generates a MAC PDU sequence and displays data in 'PDU Contents'.
• Import: Stet the ’PDU Display Contents’ at the cursor position on the 'User Bits Editor',
then go back to the 'Data Type Entry' window.
• Cancel: Discard all changes in the window and go back to the 'Data Type Entry' window.
Table 6 Payload Data Parameters
Item Range Default Description
Payload Data FIX(0000).. FIX(1111) | PN9 |
PN15 | S(BPSK) .. S(64QAM)
| Data From Hex File | User
Entered Data
FIX(0000) Select the type of Payload
Data. See section 8.5.1.1 for a
description of these data
types.
Length 1 to 2048, step size 1 1 Set the payload length to be
set the 'Payload Bytes' field.