DFE equalizer algorithm understanding

Dear all,

I am a new programmer for DSP. I have a question related to basic understanding of FFE, DFE algorithm as follow.

What exactly the decision device in DFE structure is? For instance, you may find attached figure illustrating an simple DFE structure. Is there anyone help me to understand what decision block play any role here?

For coding, how can we perform this block?

Thank in advanced Bonny

[Abby__DSP]

Hello Bonny,

The decision block allows for non linearity, it provides the removal of the noise (if all the guess are rigth).

you can implement the DFE your self by using adaptative filtering for the two filters, or , if you the comm toolbox, there is also an in-built implementation of DFE equalizer.

Kind regards,