Prev: FUZZY C-MEANS CLUSTERING
Next: putmatrix
From: Monty Ereño on 22 Jan 2010 05:27
Hi,

I'm working with DVB-T OFDM signals. I capture a signal using a HP VSA and then:

1.- I define the channel frequency response comparing the received pilot carrier values and comparing them with the expected theoretical values.

2.-Once I have this channel, I apply the IFFT() to obtain the CIR(channel impulse response). The problem is that my CIR is not centred. And I need a centred CIR because then I'm going to use it in a convolution.

¿Does anyone know if I have to apply any change to the frequency response before applying the IFFT?

Thanks in advance.

Monty
From: Matt J on 22 Jan 2010 09:36
"Monty Ereño" <zirrara(a)gmail.com> wrote in message <hjbuhp$qi1$1(a)fred.mathworks.com>...
> Hi,
>
> I'm working with DVB-T OFDM signals. I capture a signal using a HP VSA and then:
>
> 1.- I define the channel frequency response comparing the received pilot carrier values and comparing them with the expected theoretical values.
>
> 2.-Once I have this channel, I apply the IFFT() to obtain the CIR(channel impulse response).
==============

help fftshift
help ifftshift
 | 
Pages: 1
Prev: FUZZY C-MEANS CLUSTERING
Next: putmatrix