List of top Communication Systems Questions

To avoid slope overload distortion in delta modulation for m(t)=10cos(2,000πt) to maintain minimum $(SNR)_Q$ (Signal to Quantization Noise Ratio), the minimum required sampling rate is

The first stage of a two-stage amplifier has a voltage gain of 10, input resistance 600 Ω, equivalent noise resistance 1600 Ω and output resistance 27 KΩ. For a second stage, these values are 25, 81 kΩ and 1 MΩ, respectively. If it is driven by the generator with output impedance 50 Ω, find the noise figure of the amplifier.

The gate used in a DPSK modulator is

What is the minimum number of satellites required from which signals can be recorded to enable a global positioning system receiver to determine latitude, longitude and altitude?

Satellite having the same orbital period as the period of rotation of the earth about its own axis is known as _____

Which of the following is a method of probability sampling ?