5.6.1 Binary modulations (r+d/2y2 B=1-okh-点 N。dr r+d/2 2N。 By convention,engineers evaluate performance in terms of P.~ Ep N whereE,is the average bit-energy.And is often called SNR. For binary antipodal system,E=E,=a2=d2/4,thus, P.-0 N UESTC-Digital transmission through the AWGN channel Prof李晓峰 11