{HEAD ~ The invention} relates to communication systems in general, and particularly to {TAIL ~ MIMO communication systems} 
relates particularly to
{ HEAD ~ The invention } relates to communication systems in general , and particularly to { TAIL ~ MIMO communication systems }
HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL