The apparatus 18, wherein the pre equalization estimator performs one of an interpolation and {HEAD ~ an extrapolation} on {TAIL ~ the prefiltering values} of the second frames 
The apparatus 18 , wherein the pre equalization estimator performs one of an interpolation and { HEAD ~ an extrapolation } on { TAIL ~ the prefiltering values } of the second frames
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH