what is doing in this note (Array formation and parentheses-style indexing with objects of class 'comm.Rect​angularQAM​Modulator' is not allowed. Use objects of class 'comm.Rect​angularQAM​Modulator' only as scalars or use a cell array.)

Array formation and parentheses-style indexing with objects of class 'comm.RectangularQAMModulator' is not allowed. Use objects of class 'comm.RectangularQAMModulator' only as scalars or use a cell array.

Answer 1

[Walter Roberson]

I suspect you are using something like,

hMod = comm.RectangularQAMModulator('ModulationOrder',64,'BitInput',true);

and then later,

dataMod = hMod(data);

but that you are not using R2016b or later. In R2016a or earlier, you need to use

dataMod = step(hMod, data);

[weikang yang]

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