The front end processor may include a frame selector configured to select the first frames from {HEAD ~ the plurality} of {TAIL ~ frames}, and a pre equalization estimator configured to estimate the pre equalization values of the second frames based on the selected first frames 
The front end processor may include a frame selector configured to select the first frames from { HEAD ~ the plurality } of { TAIL ~ frames } , and a pre equalization estimator configured to estimate the pre equalization values of the second frames based on the selected first frames
OTH 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH