awgn channel

dear all,


I want to use AWGN channel to find the performance error of OFDM system
using matlab. Could anybody help me please,
1. explain to me how AWGN channel affects to our data ?
2. that anybody have awgn channel matlab code that can I use or show to
me how to calculate awgn.



regard,
nmaedewi

Matlab has a built in function to do all the hard work for you.  Type
"help awgn" at the Matlab prompt and see the examples that are supplied
with it.

col

cb135@hotmail.com wrote:
> Matlab has a built in function to do all the hard work for you.  Type
> "help awgn" at the Matlab prompt and see the examples that are supplied
> with it.
> 
> col
> 

Plus, you can use function "randn", which also makes
normal distributed noise.
for example: y = x + n where n = randn(0, var)

Regards,
-James