Question2: 5G link (40 pt) In this question we want to explore 5G as the next evolution in cellular communications. One proposal would be a wireless link designed at the 28 GHz band to transmit at 4 Gbps bit rate over a 1 GHz channel. M-ary QAM 100 10-1 QPSK 16QAM 64QAM 256QAM 1024QAM 10-2 symbol error rate 10-3 104 10-5 106 0 5 10 30 35 40 15 20 25 SNR per symbol (dB) a) What would be the minimum number of bits per symbol? Suggest a constellation. (10pt) b) What is the sensitivity required for the receiver given a BER of 10-6 ? Assume the noise figure of the receiver is 7 dB. (10pt) c) If the maximum PA output power is 23 dBm, what is the distance that can be supported? (you can find PAPR data in lecture notes). (10pt) d) What do you suggest to increase the supported distance (say to 100m) without increasing PA power nor BW and without reducing data rate? (10pt) Question2: 5G link (40 pt) In this question we want to explore 5G as the next evolution in cellular communications. One proposal would be a wireless link designed at the 28 GHz band to transmit at 4 Gbps bit rate over a 1 GHz channel. M-ary QAM 100 10-1 QPSK 16QAM 64QAM 256QAM 1024QAM 10-2 symbol error rate 10-3 104 10-5 106 0 5 10 30 35 40 15 20 25 SNR per symbol (dB) a) What would be the minimum number of bits per symbol? Suggest a constellation. (10pt) b) What is the sensitivity required for the receiver given a BER of 10-6 ? Assume the noise figure of the receiver is 7 dB. (10pt) c) If the maximum PA output power is 23 dBm, what is the distance that can be supported? (you can find PAPR data in lecture notes). (10pt) d) What do you suggest to increase the supported distance (say to 100m) without increasing PA power nor BW and without reducing data rate? (10pt)