Feedback from one or more receivers may be used by {HEAD ~ a transmitter} to improve {TAIL ~ quality}, capacity, and scheduling in MIMO OFDM communication systems 
to improve
Feedback from one or more receivers may be used by { HEAD ~ a transmitter } to improve { TAIL ~ quality } , capacity , and scheduling in MIMO OFDM communication systems
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH