question archive Consider an 8-ary digital communication system consisting of 8 equally likely signals, si(t), i = 1, 2,
Consider an 8-ary digital communication system consisting of 8 equally likely signals, si(t), i = 1, 2,
Subject:Electrical EngineeringPrice: Bought3
Consider an 8-ary digital communication system consisting of 8 equally likely signals, si(t), i = 1, 2, . .., 8. The signal constellation of the 8 signals lie at the corners of a cube centered at the origin. The average symbol energy is E for any transmitted signals.
(a) Find the vector representation of each signal si(t).
(b) Show that the average probability of symbol error is given by
Pe = 1 – {1 – Q (Ö2E/3N0)}3
Where No/2 is the power spectral density of the additive white Gaussian noise.
