Explore BrainMass
Share

Explore BrainMass

    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?

    © BrainMass Inc. brainmass.com October 10, 2019, 3:37 am ad1c9bdddf
    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