where W is the highest frequency in the modulating signal but non-sinusoidal in nature and D is the Deviation ratio which is the ratio of frequency deviation to highest frequency of modulating non-sinusoidal signal.
where w Is the HIgHesT frEquenCy In The modUlaTinG SIgnal buT noN-SiNUsoidaL In NAtUre And D IS THe deviatiOn raTio wHich is tHE rAtIO of frEQuEncy devIaTIon to hiGhest frEqueNcy of moDulating non-SInUSoiDAl sIgNal.