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R 0 T Y U 1 O P F G H H J K к L B N M De SA AR Ctrl 11 Name: For a typical cellular system with a reuse factor of 7, the signal transmit power is 0 dBm from every BS A the average cell radius is 1 kom with a noise power equal to - 7 dBm. Assume the loss factor is 2.8. 14. What would the worst case signal to interference ratio be? 4.6 dB c. 17 dB b. 54.3 dB d. 14 dB ter) a. vels to ZA. isk) c. b. 15. For a BPSK channel, what is the fading margin required to maintain a bit error rate of 10-937 a. 76,3777 dB c. 2.8572 dB b. 16.0808 dB d. 19.938 dB 16. Which of the following is not true about multiple access (MA) in communication systems? a. There's a lack synchronization between They are not multiplexed systems. the receiver and the received signal. There exists synchronization between the d. They are used solely on the uplink. receiver and the received signal. 17. What is the absolute processing gain of a DS-CDMA system with a value of 60 dB 64 1.000 b. 4,096 d. 1,000,000 There's a CDMA system that has a minimum required SNR of 15 dB and a single channel SNR of 21 dB. The processing gain is 2048. c. a. waters 31-0 (60 c. 18. Using the narrative above, if the information rate is 30 kbps, then what is the chip rate in chips per second (cps)? a. 14.65 cps c. 30 kcps b. 14.65 kcps d. 61.44 Mcps 19. Using the narrative above, what would be the maximum number of users in the system if the interference parameter between cells is 1.42 a. 21 35 b. 22 d. 36 20. If the average received power po for a Rayleigh fading channel is 2000W, then what is the probability that the received power p will be less than 100W? a. . 0.3935 c. 0.8647 b. -0.6487 d. None of the above. a. An MU is operating at 1.9 GHz and moving at 50 mph (80.5 kph). The parameter a=0.5. 21. What is the amount of Doppler shift experienced? 316.67Hz c. 509.83 kHz b. 141.62 Hz d. 0.88 Hz 22. What's the average fade duration of the narrative given above? 0.445 us c. 1.6 ms b. 2.577 s d. 0.7156 ms a. 4 shiftfil-feě