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