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2. (15pts) Cellular service provider Bell asks you to evaluate the quality of served provided by its cellular system. It asks you to evaluate the quality based on downlink transmission. The cells in Bell's network are of radius R=1 km. The received signal power at MS from BS is modeled based on simplified pathloss model with shadowing. The linear pathloss is given by PL(d)[dB] = 98 + 35 log10(d) At do = 100 m, you measured the average received signal power which is P,(d.) = -118 dBm. (a) (2pts) Determine the pathloss constant and pathloss exponent of this channel. (b) (3pts) Determine the BS transmit power Pt, and express it both in dBm and in Watts. (c) (10pts) For this part, you need to take into account the shadowing effect in the pathloss. The shadowing component in dB domain is Xo, which has standard deviation o = 6 dB. For acceptable data transmission, the received signal power at the MS needs to be above the minimum requirement Pr.min = 158 dBm. The operator needs to ensure an MS at the edge of the cell can have acceptable signal quality for at least 90% of time. Does the cell radius satisfy the design requirement? You need to prove your answer. 2. (15pts) Cellular service provider Bell asks you to evaluate the quality of served provided by its cellular system. It asks you to evaluate the quality based on downlink transmission. The cells in Bell's network are of radius R=1 km. The received signal power at MS from BS is modeled based on simplified pathloss model with shadowing. The linear pathloss is given by PL(d)[dB] = 98 + 35 log10(d) At do = 100 m, you measured the average received signal power which is P,(d.) = -118 dBm. (a) (2pts) Determine the pathloss constant and pathloss exponent of this channel. (b) (3pts) Determine the BS transmit power Pt, and express it both in dBm and in Watts. (c) (10pts) For this part, you need to take into account the shadowing effect in the pathloss. The shadowing component in dB domain is Xo, which has standard deviation o = 6 dB. For acceptable data transmission, the received signal power at the MS needs to be above the minimum requirement Pr.min = 158 dBm. The operator needs to ensure an MS at the edge of the cell can have acceptable signal quality for at least 90% of time. Does the cell radius satisfy the design requirement? You need to prove your