FIG 4 shows {HEAD ~ a transmit precoder} 400 which is modified in {TAIL ~ accordance} with this invention 
is modified in
FIG 4 shows { HEAD ~ a transmit precoder } 400 which is modified in { TAIL ~ accordance } with this invention
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH