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Help me with making dfe equalizer (problem with modes)

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dfe equalizer!

I am trying to make an equalizer.As you all know, equalizer has two modes:training and decision mode.
The signal that is the input to the equalizer has 128 bits and each bit has 128 samples.So totally we have 128:128 samples. I use the 5000 samples in the training mode and the rest in the decision mode.
I write in matlab:

eq = dfe(5,2,lms(0.08))
out = equalize(eq,y,x(1:5000))

The x is the transmitted signal and y us the input to the equalizer.
The problem is that after training mode, the equalizer does not work well.Could you please help me?

Thanks
 

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