D) The local average power delay profile in a particular environment is found to be P(t) = n=0 [106/(n +1)] 8 (t-n106) (i) Sketch the power Delay Profile of the channel in dBm (ii) What is the rms delay spread (o,) of the channel? (iii) If the channel is to be used with a modulation that requires an equalizer whenever the symbol duration T is 100,, determine the maximum RF symbol rate that can be supported without requiring an equalizer. (iv) If a mobile travelling at 30 km/hour receives a signal through the channel, determine the time over which the channel appears stationary (or at least highly correlated). 07