To be consistent with MATLAB notation, rename the target t and the output y.
What are the significant correlation delays in the target autocorrelation function?
What are the significant correlation delays in the 5 crosscorrelation functions between the target and the 5 inputs?
Do you realize that
a. For nondelayed inputs min(ID) = 0
b. All 5 inputs will have the same delays but the output feedback delays can be different.
c. Multiple inputs and delays all share the same delay buffer that has the length LDB = max( [ 1+max(ID), max(FD) ])
d. All delays <= LBD do not have to be included in ID or FD
Don't introduce the complication of an 8 point moving average feedback delay input. Just put the delays in the buffer and let the training algorithm decide how to weight them.
Hope this helps.
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