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answerhappygod
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please ans this question
please ans this question
1. (1) Consider the channel related information for a mobile environment. The power delay profile is [0 dB(0.1 us), -5 dB(0.2 us),-10 dB(0.4 us), -20 dB(0.6 us), -40 dB(0.9 us)]. Calculate the rms delay spread. (ii) Classification of fading channels: Measurements are taken for propagation in two different local areas. In both set of measurements, the measurement vehicle with communication equipment's was run at a maximum speed of 80km/hr. The carrier frequency is 6GHz. The power delay profiles of the two set of measurements are shown below. Pr (0) Call) Pr(t) [dB] ode Odo -1006 -10dB -2005 - 3008 -2006 50 75 100 5 10 T(us) Transmission BW: 200 KHZ, Symbol Rate: 1 MSPS a) Find Maximum Doppler shift (fm), Coherence Bandwidth (Bc) and Coherence Time (T.). Use formulae in slides. b) For both cases, tell whether the channel is i. Flat fading or frequency selective fading? ii. Fast or slow fading? c) If area mean signal power is Parca = E []s(t)received Area average signal], Then by what factor the site-specific or local power will increase/decrease compared to Parea for the flat-fading case found in (b). [HINT: Factor = Ek P-(Tk)] =
1. (1) Consider the channel related information for a mobile environment. The power delay profile is [0 dB(0.1 us), -5 dB(0.2 us),-10 dB(0.4 us), -20 dB(0.6 us), -40 dB(0.9 us)]. Calculate the rms delay spread. (ii) Classification of fading channels: Measurements are taken for propagation in two different local areas. In both set of measurements, the measurement vehicle with communication equipment's was run at a maximum speed of 80km/hr. The carrier frequency is 6GHz. The power delay profiles of the two set of measurements are shown below. Pr (0) Call) Pr(t) [dB] ode Odo -1006 -10dB -2005 - 3008 -2006 50 75 100 5 10 T(us) Transmission BW: 200 KHZ, Symbol Rate: 1 MSPS a) Find Maximum Doppler shift (fm), Coherence Bandwidth (Bc) and Coherence Time (T.). Use formulae in slides. b) For both cases, tell whether the channel is i. Flat fading or frequency selective fading? ii. Fast or slow fading? c) If area mean signal power is Parca = E []s(t)received Area average signal], Then by what factor the site-specific or local power will increase/decrease compared to Parea for the flat-fading case found in (b). [HINT: Factor = Ek P-(Tk)] =
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