Consider the two-user, synchronous CDMA transmission system described in Problem 16.6. P...

Consider the two-user, synchronous CDMA transmission system described in Problem 16.6. P(b1 = 1) = P(b2 = 1) =1/2 and P(b1, b2) = P(b1)P(b2). The jointly optimum detector makes decisions based on the maximum a posteriori probability (MAP) criterion. That is, the detector computes

a. For the equally likely information bits (b1, b2) show that the MAP criterion is equivalent to the maximum-likelihood (ML) criterion

b. Show that the ML criterion in (a) leads to the jointly optimum detector that makes decisions on b1 and b2 according to the following rule: