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TelecommunicationsProblem 1:
In a typical mobile communications base station (or cell site), a radio frequency (RF) signal is amplified in the base station and then sent (over cable) to the antennas at the top of the tower. Consider the case where a RF signal is applied to a 20 dB amplifier in the base station. The cable loss between this amplifier and the antennas at the top of the 100 feet tower is 9 dB. If the input to the amplifier is 3 Watts, what is the output power at the antenna?
Problem 2:
Consider a communications channel with a bandwidth of 4,000 Hz. What is the minimum required S/N to support a capacity of 64,000 bps?
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Determine the voltage required on the input of the amplifier to give the maximum output of 85 dBuV. If the signal level from the aerial is 5 dBmV and the input noise level is 20 dBuV, calculate the signal-to-noise ratio on the output of the amplifi..
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The schematic of the traffic light controller
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Maximum Amount of Channels A Link Can Carry, A microwave radio link operates over a bandwidth of 400 MHz at C band. The link carries a number of channels of data using FDMA.
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