This way, the performance of {HEAD ~ a channel equalizer} of a digital system becomes {TAIL ~ the critical factor} in the performance of the system as a whole 
This way , the performance of { HEAD ~ a channel equalizer } of a digital system becomes { TAIL ~ the critical factor } in the performance of the system as a whole
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH