A customer asks:
Our system group was trying to test EVM on an Agilent EXA with one of the data files (QPSK with filter) from the ADI wiki page link:
However, in order to do so, we need to know the following information:
- Base Symbol Rate (only the sampling rate is provided, but the symbol rate, which is critical for EVM measurement, is not provided)
- Burst Length
- Pulse Shaping Filter Type (Root-Raised-Cosine or...?)
- If Root-Raised-Cosine, what is the roll off?
- Exact modulation scheme (Is it normal QPSK or it is offset QPSK or pi/4 QPSK?)