Consider a mobile station moving at 30 Km/h while transmitting a 1Mbps Binary Phase Shift Keying (BPSK) signal with carrier frequency of 1800 MHz through a fading communication channel characterized by the following power delay profile P(t) : P(t) 8 (T) + 0.58 (t-50ns) + 0.058 (t-100ns) + 0.018 (T-150ns) a) Sketch the power delay profile of the channel in dBm? b) Calculate the RMS delay spread of the channel? c) Calculate the 90% coherence bandwidth of the channel? d) Does the transmitted signal undergo frequency selective fading or flat fading? Do we need an equalizer at the receiver? Explain you answer. e) Does the transmitted signal undergo slow or fast fading? Explain you answer.