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AD-FMCOMMS2/3/4/5 Example I/Q Files

Question asked by JTANITA Employee on Mar 27, 2017
Latest reply on Mar 31, 2017 by ACozma

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:


AD-FMCOMMS2/3/4/5 Basic IQ Datafiles [Analog Devices Wiki] 


However, in order to do so, we need to know the following information:


  1. Base Symbol Rate (only the sampling rate is provided, but the symbol rate, which is critical for EVM measurement, is not provided)
  2. Burst Length
  3. Pulse Shaping Filter Type (Root-Raised-Cosine or...?)
    1. If Root-Raised-Cosine, what is the roll off?
  4. Exact modulation scheme (Is it normal QPSK or it is offset QPSK or pi/4 QPSK?)