Telecommunications
Not what you're looking for?
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?
Purchase this Solution
Solution Summary
This posting contains the solution to the given problems.
Solution Preview
Hi,
1. The total gain from the amplifier up to the antenna is:
G = 20dB - 9dB
G = 11dB
The ...
Purchase this Solution
Free BrainMass Quizzes
Air Pollution Control - Environmental Science
Working principle of ESP
Architectural History
This quiz is intended to test the basics of History of Architecture- foundation for all architectural courses.