re: integrate and dump unit in matched filter

[anilgat]

re: integrate and dump unit in matched filter

hi..am findin difficult in understandin the concepts of integrate and dump cks required.. in matched filter design in cdma recievers.. and also in codin.. plz help me out in gettin through this plz do reply thnku

 

[mahdithdn]

Re: integrate and dump unit in matched filter

Hi
There are two ways to implement matched filter in digital receivers. Assume p(t) is the pulse shaping of the received signal.
Matched Filter: h(t) = p(T-t)
y[n] = h(t)*r(t) (t = nT)
Correlator: (integration and damp)
y[n] = ∫p(t-nT)r(t) (integration from nT to (n+1)T)

It is straightforward to show that these two methods are equivalent. In the second method, in fact, we have an integrator that its output reads each T seconds and then its value damp to zero for the next integration interval, so the name of this module is integration and damp.

For more information refer to Communication Systems by Simon Haykin.

Best Regards