- Adjacent-channel interference
Adjacent-channel interference or ACI is
interferencecaused by extraneous power from a signal in an adjacent channel.
"Note 1:" Adjacent channel interference may be caused by inadequate filtering, such as incomplete filtering of unwanted
modulationproducts in frequency modulation(FM) systems, improper tuning, or poor frequency control, in either the reference channel or the interfering channel, or both.
"Note 2:" Adjacent-channel interference is distinguished from
Federal Standard 1037Cand from MIL-STD-188
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