Question

Consider an Mary QAM constellation with symbol spacing of the

constituent PAM constellations given by, unit pulse energy,

transmitted over an AWGN channel with PSD No 2 No2 per IQI,Q

channels What is the probability of error given the transmission

of a constellation point on the edge of the square constellation

but not a corner point

Answer 1

3Q (∆\✓2N°) - 2Q² (∆\✓2N° )