In {HEAD ~ an embodiment} of {TAIL ~ the invention} the apparatus may include a calibrator which may be implemented using the existing analog to digital conversion and demodulation capabilities on the receive path of the modem or alternately, a dedicated module 
of
In { HEAD ~ an embodiment } of { TAIL ~ the invention } the apparatus may include a calibrator which may be implemented using the existing analog to digital conversion and demodulation capabilities on the receive path of the modem or alternately , a dedicated module
OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH