5.4.1 Orthogonal signal waveforms For orthogonal,we require that S=VEΨ，s,=VE,Ψ2，Sw=VEyy Ymm=0 and the orthogonal FSK: um()=Acos[2π(f0+m×△f)] condi is Af=0.5kR,,where What is△f?Freq set:{fo,fo+△f,fot R.=1/T'and k is any posi. To make the signals mutual orthogor interger. The smallest freq separation is Compute the correlation coeff.of any two sigr △f=0.5R =尚=fco2+m4W小eo s2(f+n△fOdL sin2π(m-n)△fT 2π(m-n)△fT Take M=4(4FSK) a 2 AAAAMW A UESTC-Digital transmission through the AWGN channel Prof李晓峰 8