Explore BrainMass
Share

# Telecommunications

This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

Problem 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?

https://brainmass.com/engineering/electrical-engineering/telecommunications-base-station-427609

#### Solution Preview

Hi,

1. The total gain from the amplifier up to the antenna is:
G = 20dB - 9dB
G = 11dB

The ...

#### Solution Summary

This posting contains the solution to the given problems.

\$2.19