yaly wrote on Jan 26th, 2010, 8:48pm:I simply use direct plot form in ADE as show below because I'm not so familiar with cadence post procesing or OCEAN functions.
Activate "Add to Outputs".
If do this, you can modify equations as rotated.
But I recommend you to write out Ocean Script from ADE and modify it.
yaly wrote on Jan 26th, 2010, 8:48pm:When wavescan is used to plot the constellation,the EVM value is calculated automatically.
However, I don't know how spectre calculate it.
Still you are misunderstanding.
Task of calculating EVM is Post Processing not Cadence Spectre.
Ocean function, evmQAM() is used.
We can use Agilent Post Processing Environment for results of Cadence Spectre.
For example, you can use a following function for evaluating EVM from Cadence Spectre results.
http://edocs.soco.agilent.com/display/ads2009/const+evm%28%29#constevm%28%29-110...Vice versa, we can use Cadence Post Processing Environment for results of Agilent ADSsim(RFDE) or Agilent GoldenGate.
Whatever vendor's simulator you use, results from it are no more than numeric data.
You can do post processing by using any Post Processing Environment as far as you can read data.
See the following. I'm using Agilent Post Processing Environment for results of Synopsis HSPICE.
http://www.designers-guide.org/Forum/YaBB.pl?num=1264059467See the following. I'm using Cadence Post Processing Environment for results of Agilent GoldenGate.
http://www.designers-guide.org/Forum/YaBB.pl?num=1260978648Attached is a special Ocean function for EVM from "blk" format data of Agilent GoldenGate.
We can use even this function for both Agilent ADS results and Cadence Spectre.