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