The transceiver determines what portion of the spectrum is desired for data transmission and then transmits {TAIL ~ the data transmission} within {HEAD ~ a dynamically selected portion} of the available spectrum 
The transceiver determines what portion of the spectrum is desired for data transmission and then transmits { TAIL ~ the data transmission } within { HEAD ~ a dynamically selected portion } of the available spectrum
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH