This is effective since time division duplexing is used and {HEAD ~ both transmission} and reception take place on {TAIL ~ the same frequency} 
This is effective since time division duplexing is used and { HEAD ~ both transmission } and reception take place on { TAIL ~ the same frequency }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL