awgn is missing?

Question

ahmed alshammari 2012-2-18

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https://ww2.mathworks.cn/matlabcentral/answers/29506-awgn-is-missing

评论： Walter 2022-11-26

Hi

I just installed Matlab 2011 A for mac and I can not find awgn function. I can not find it under help and i also get error message when i use it. can somebody help.

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Walter 2022-11-26

'awgn' requires Communications Toolbox.

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Answer 1

Wayne King 2012-2-18

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https://ww2.mathworks.cn/matlabcentral/answers/29506-awgn-is-missing#answer_37859

Hi, awgn() is part of the Communications System Toolbox.

Do you have that product installed?

Enter

>>ver

and see if it is the list of your products.

Alternatively, you can use randn() to add WGN to your signal or image, but awgn() comes with more options.

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ahmed alshammari 2012-2-18

EDU>> ver

-------------------------------------------------------------------------------------

MATLAB Version 7.12.0.635 (R2011a)

MATLAB License Number: STUDENT

Operating System: Mac OS X Version: 10.7.3 Build: 11D50b

Java VM Version: Java 1.6.0_29-b11-402-11D50b with Apple Inc. Java HotSpot(TM) 64-Bit Server VM mixed mode

-------------------------------------------------------------------------------------

MATLAB Version 7.12 (R2011a)

Simulink Version 7.7 (R2011a)

Control System Toolbox Version 9.1 (R2011a)

DSP System Toolbox Version 8.0 (R2011a)

Fixed-Point Toolbox Version 3.3 (R2011a)

Image Processing Toolbox Version 7.2 (R2011a)

Optimization Toolbox Version 6.0 (R2011a)

Signal Processing Toolbox Version 6.15 (R2011a)

Statistics Toolbox Version 7.5 (R2011a)

Symbolic Math Toolbox Version 5.6 (R2011a)

EDU>>

this what I got. I do not think that Communications System Toolbox is installed. Do you know how can I install it. Do you think it is important since i am working on ofdm.

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