The error path controls a gain or {HEAD ~ a phase} of a second order intermodulation component in the path turning signal based on {TAIL ~ the input signal}, to generate an intermodulation compensation signal 
based on
The error path controls a gain or { HEAD ~ a phase } of a second order intermodulation component in the path turning signal based on { TAIL ~ the input signal } , to generate an intermodulation compensation signal
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH