The present invention endeavors to model {HEAD ~ the power line} by transmitting signals onto the line and examining the response at {TAIL ~ a receiver input} 
The present invention endeavors to model { HEAD ~ the power line } by transmitting signals onto the line and examining the response at { TAIL ~ a receiver input }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL