awgn is missing?

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.

[Walter]

'awgn' requires Communications Toolbox.

Answer 1

[Wayne King]

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.

[ahmed alshammari]

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.

Answer 2

[Wayne King]

I think it would be nice to have since that is your area.

You can get the Communications System Toolbox as an add-on for you student version:

http://www.mathworks.com/academia/student_version/companion.html