frequency offset, OFDM, BER and matlab

Dear all,

I am trying to simulate OFDM baseband in AWGN with frequency offset
and look for BER vs. Eb/No in matlab.
I have used the form:


r = s.*cfo + n;


where: r = received signal with frequency offset
          s = transmitted signal
          n = noise
and
cfo = exp(j*2*pi*freqOffset*(0:length(s)-1))


freqOffset = normalised frequency offset.


But I havent get the proper BER vs. Eb/No figure. Could somebody help
me and give me an idea how to simulate frequency offset with matlab
and get BER please.


Thanks.
Awi

On Apr 10, 3:32 pm, "awi" <nmaed...@gmail.com> wrote:
> Dear all,
>
> I am trying to simulate OFDM baseband in AWGN with frequency offset
> and look for BER vs. Eb/No in matlab.
> I have used the form:
>
> r = s.*cfo + n;
>
> where: r = received signal with frequency offset
>           s = transmitted signal
>           n = noise
> and
> cfo = exp(j*2*pi*freqOffset*(0:length(s)-1))
>
> freqOffset = normalised frequency offset.
>
> But I havent get the proper BER vs. Eb/No figure.

What do you mean by the "proper" BER figure?  Do you mean the
theoretical figure?  If so, where do you get this theoretical figure
from?


--
Oli

On Apr 10, 10:43 am, "Oli Charlesworth" <c...@olifilth.co.uk> wrote:

> What do you mean by the "proper" BER figure?  Do you mean the
> theoretical figure?  If so, where do you get this theoretical figure
> from?
>

Good question.  To me, the original post reads like:
"Hi.  I have A.  But it should look like B.
How do I get A that is like B?"

;-)

Julius