If we have a total bandwidth of 254 kHz in a communication system. We want to use FDM to multiplex several 50-4Hz channels on the medium. If a guard band of 1 kHz is required between any two channels, what is the maximum number of channels that can be multiplexed on this medium? Question 16 If we have a communication system with 170 KHz available bandwidth. The system was modulated using PSK with 64 levels and d= 0.9. What is the bit rate in kbps? Question 13 A constellation diagram shows us the of a signal element, particularly when we are using two carriers (one in-phase and one quadrature) O amplitude and phase O frequency and phase O amplitude and frequency none of the others 2 points s the phase of the carrier is varied to represent two or more different signal elements. Both peak amplitude and frequency remain constant. Question 14 In OPSK OASK OFSK O QAM Question 5 We need to digitize an analog signal that has 21 kHz bandwidth We need to sample the signal at twice the highest frequency. We assume that each sample requires 8 bits. What is the required bitrate in Kbps? Question 1 If we have a signal sending data at a bit rate oif 10kbps, what is the bit duration? 10 ms 1 ms 0.01 ms 0.1 ms Question 2 If a signal uses 3 signal elements to send 2 bits, what is the value of (r)? Or-1/2 Or-3/2 O r-2/3 Or=3