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