Question The digital microwave radio system shown in Figure 2 operates in... The digital microwave radio...

 

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Question The digital microwave radio system shown in Figure 2 operates in... The digital microwave radio system shown in Figure 2 operates in the 18GHz radio frequency band and provides 2x2 Mbps transmission capacity between two BTS sites. Figure 2: A microwave link Transmitter RF Output Power RF Branching Loss 30 dBm (High Power Version) 20 dBm (Low Power Version) 3 dB Receiver RF Branching Loss Threshold @ BER= 10-3 Threshold @ BER= 10-6 4 dB -89 dBm -85 dBm Antenna 0.3 m antenna 0.6 m antenna 1.2 m antenna: 34.5 dBd 39.5 dBd 46.5 dBd Choose all the parameters including transmitter power and antennas on your interest and draw a diagram similar to Figure 2 with all parameters. Then, calculate the nominal Receive Signal Level (RSL) at the input of the receiver in dBm. Explain the key assumption you are making during this calculation. Students are required to present a systematic (step-by-step) calculation to achieve full marks. (10 Marks) II. What are the possible reasons to use the passive repeater in this microwave system? Explain with an example. (5 Marks) III. Calculate the fade Margin for receiver threshold BER 10-3 and BER 10-6. (5 Marks) IV. Select the appropriate transmitter power and antenna to achieve a minimum of 30 dB Fade Margin at BER of 10-6. Explain the process. (10 Marks) V. Provide a short report on how to measure quality of a point-to-point microwave link. You need to present at least three measurement criteria with detailed explanation and examples. (10 Marks) VI. Provide a short report on how to enhance reliability of a point-to-point microwave link. You need to present at least three methods to enhance reliability with detailed explanation with economic impact. Question The digital microwave radio system shown in Figure 2 operates in... The digital microwave radio system shown in Figure 2 operates in the 18GHz radio frequency band and provides 2x2 Mbps transmission capacity between two BTS sites. Figure 2: A microwave link Transmitter RF Output Power RF Branching Loss 30 dBm (High Power Version) 20 dBm (Low Power Version) 3 dB Receiver RF Branching Loss Threshold @ BER= 10-3 Threshold @ BER= 10-6 4 dB -89 dBm -85 dBm Antenna 0.3 m antenna 0.6 m antenna 1.2 m antenna: 34.5 dBd 39.5 dBd 46.5 dBd Choose all the parameters including transmitter power and antennas on your interest and draw a diagram similar to Figure 2 with all parameters. Then, calculate the nominal Receive Signal Level (RSL) at the input of the receiver in dBm. Explain the key assumption you are making during this calculation. Students are required to present a systematic (step-by-step) calculation to achieve full marks. (10 Marks) II. What are the possible reasons to use the passive repeater in this microwave system? Explain with an example. (5 Marks) III. Calculate the fade Margin for receiver threshold BER 10-3 and BER 10-6. (5 Marks) IV. Select the appropriate transmitter power and antenna to achieve a minimum of 30 dB Fade Margin at BER of 10-6. Explain the process. (10 Marks) V. Provide a short report on how to measure quality of a point-to-point microwave link. You need to present at least three measurement criteria with detailed explanation and examples. (10 Marks) VI. Provide a short report on how to enhance reliability of a point-to-point microwave link. You need to present at least three methods to enhance reliability with detailed explanation with economic impact.

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Diagram and Calculation of Nominal Receive Signal Level RSL We will select the parameters as follows Transmitter RF Output Power 30 dBm High Power Version Antenna 12 m antenna with 465 dBd gain Now le... View the full answer