This subtraction may be accomplished prior to {TAIL ~ receipt} of {HEAD ~ the wideband signal} by the sampling device, or alternatively, within the sampling device 
This subtraction may be accomplished prior to { TAIL ~ receipt } of { HEAD ~ the wideband signal } by the sampling device , or alternatively , within the sampling device
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH