MATLAB: Unable to use Communication toolbox system object on Matlab R2013a student version

communicationCommunications Toolbox

There is comm.RectangularQAMTCMModulator but I can't see comm.RectangularQAMModulator in my Matlab, same goes for BPSKModulator() etc.

EDU>> version ans = 8.1.0.604 (R2013a)

EDU>> a=comm.RectangularQAMModulator(16); Undefined variable "dsp" or class "dsp.CommonSets.getSet"

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Install the latest Java and then re-installing Matlab on my Windows 8.1 seems to fix this problem.

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MATLAB: Using findjobj in R2013a

I did a little profiling and found the problem. The findobj function calls home to the FEX and checks for a newer version in the checkVersion subfunction. On my system this fails because urlread times out (which takes a long time). The checkVersion subfunction catches the error and then discards it, which makes it tough to figure out what is going on. Using the undocumented feature of findobj

addpref('FindJObj','dontCheckNewerVersion', true)

stops from calling home and avoids the problems. I wonder if an error on trying to check the newer version should automatically set the preference to not check for updates.

MATLAB: Matlab R2013a installation error

I have seen this with users who attempted to install an illegal MATLAB version. But as you would not create a MathWorks login in such a case, I suppose you use a legal version and I recommend you contact MathWorks installation support.

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MATLAB: Using findjobj in R2013a

MATLAB: Matlab R2013a installation error

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