How can i find helper functions in Matlab?

How or where can i get the helper functions(v2vPERSimulator.m and V2VChannel.m ) needed in the Matworks example "802.11p Packet Error Rate Simulation" at tha following link https://ch.mathworks.com/help/wlan/examples/802-11p-packet-error-rate-simulation-for-a-vehicular-channel.html

Answer 1

[Stephen23]

At the bottom of the page, in a section entitled "Appendix", you will find the links to those functions:

[Nadine Metago]

Thanks for your reply, i don't know how to access to those functions. here is what i get when i click on it

[Nadine Metago]

I tried to find it with Matlab command windows using "help" but it returned nothing.

I also tried to find it from Matlab install directory as suggested by some, but in vain

[Stephen23]

1 - Did you try following the advice given in that dialog box?: "Run the command by entering it in the MATLAB Command Window." Try them in the command window:

edit('v2vPERSimulator')
edit('V2VChannel')

2 - It is also possible that your version might not include those files: what MATLAB version are you using? Note that the function wlannonhtconfig was added in R2015b, so if you are using an earlier version it is unlikely that you will find those functions.

3 - And of course for all of those functions you will need to have the WLAN toolbox installed and a current valid license for it:

https://www.mathworks.com/matlabcentral/answers/93913-how-can-i-see-which-toolboxes-i-have-installed

https://www.mathworks.com/matlabcentral/answers/97495-how-can-i-test-the-license-for-a-toolbox-in-matlab

[Nadine Metago]

1- yes i did it and it is mentionned that it doesn't exist

2- I'm running it on R2018a

3- i found Wlan System Toolbox installed using Add-on explorer

and it shows that functions contained in Wlan Toolbox exist on Matlab when i use "help"on command windows. i tried it for exemple with wlanVHTConfig, wlanHTConfig, wlanNonHTConfig, wlanS1GConfig, wlanDMGConfig, wlanWaveformGenerator, etc... and they all exist.

I note that when i run the exemple, all the functions are found except v2vPERSimulator and

V2VChannel

[Stephen23]

@Nadine Metago: You have done a pretty thorough check, and written up your findings clearly. Nice work. Note that having a toolbox installed is not the same thing as having a valid license for it: as well as checking that the files exist, you need to check if you have a license for that toolbox:

https://www.mathworks.com/matlabcentral/answers/97495-how-can-i-test-the-license-for-a-toolbox-in-matlab

If you do have a valid license, then I think you should contact TMW directly: click the "Contact Us" link at the top of this page, and call them.

Important: Your screenshot seems to indicate that your current directory is C\...\MATLAB\R2018b\bin: do NOT use the MATLAB bin directory as your current directory, or save any files in the MATLAB (or any other application's) installation directory. It is usual to save MATLAB files under the user directory.