1. A signal is received over a Rayleigh fading channel with an average SNR of I = 20 dB. Suppose that the threshold for reliable communications is ẞ = 13 dB. (a) Determine the outage probability, which is the probability that the SNR is less than the threshold; i.e., PyB]. Assume that there is just one path (no diversity). (b) Now assume that the signal is transmitted on L distinct frequencies such that each frequency experiences an independent channel between the transmitter and receiver. Determine the minimum value of L such that the outage probability does not exceed 0.001. Assume that the receiver performs maximal ratio combining.