The method 1, wherein {HEAD ~ the code word symbols} are based on {TAIL ~ a stacking space time code construction} 
are based on
The method 1 , wherein { HEAD ~ the code word symbols } are based on { TAIL ~ a stacking space time code construction }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL