A first set of {TAIL ~ narrowband signals} may be recovered from {HEAD ~ the plurality} of sampled signals 
A first set of { TAIL ~ narrowband signals } may be recovered from { HEAD ~ the plurality } of sampled signals
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH