The transmit path of an XDSL modem introduces {HEAD ~ various non linearities} into {TAIL ~ transmissions} in both the frequency and time domains 
The transmit path of an XDSL modem introduces { HEAD ~ various non linearities } into { TAIL ~ transmissions } in both the frequency and time domains
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH