feedback architecture for FIR filter

Arnab Ghosh · Nov 18, 2013

can anyone please explain what is the use of feedback loop in this implementation ? This is an IEEE paper . I cant understand why we should feed back the previous dataView attachment papsum6.pdf

axcdd · Nov 18, 2013

feedback is used when u have less MAC units then filter length.
eg. 4 tap fir filter
y=x[3]*c[3]+x[2]*c[2] + x[1]*c[1]+x[0]*c[0]
when having only 2 multiplayers available:
ACC=x[3]*c[3]+x[2]*c[2] then
ACC=x[1]*c[1]+x[0]*c[0] + ACC (feedback)

FvM · Nov 18, 2013

I think the term "feedback" may be misleading, I would prefer "serial processing".

feedback architecture for FIR filter

Arnab Ghosh

Newbie level 1

axcdd

Full Member level 3

FvM

Super Moderator

Similar threads

feedback architecture for FIR filter

Arnab Ghosh

Newbie level 1

axcdd

Full Member level 3

FvM

Super Moderator

Similar threads

Privacy & Transparency

Privacy & Transparency