Application Example: GSM AM Suppression Test
R&S
®
SMW-K550
19
User Manual 1178.3263.02 ─ 01
The default burst type is sufficient. It uses GMSK modulation and PN9 data source.
("Common > Burst Type = Normal (GMSK / Full Rate)" and "Normal (GMSK) >
Data = PRBS 9")
4. If R&S
SMW is triggered by the BS:
● Select "Trigger In > Trigger Mode > Armed Auto"
● Select "Source > External Global Trigger".
5. Interferer is delayed in time between 61 and 86 symbols.
To delay the interfering signal, select for example "Trigger Delay = 70 Symbols".
6. Configure the wanted signals in baseband A and B.
Load you own data lists as data source.
Configure the GSM bursts and frames according to the specification
TS 51.021
.
Consider the required channel coding.
7. In all baseband blocks, select "GSM > State > On".
Both I/Q modulators are activated automatically.
For more information on the available GSM/EDGE settings:
See user manual R&S
®
SMW-K40/-K41 GSM/EDGE, EDGE Evolution.
To activate the signal generation
1. If the BS reference frequency is fed to the R&S
SMW, in the status bar select "Int
Ref > Reference Frequency > External".
How to Generate Signals for GSM AM Suppression Tests
