Communication

Receiver and transmitter in RF/optic satelite communciation distance vs datarate

Receiver and transmitter in RF/optic satelite communciation distance vs datarate
  1. Why is communication satellite used for long distance?
  2. What is optical satellite communication?

Why is communication satellite used for long distance?

The high frequency radio waves used for telecommunications links travel by line of sight and so are obstructed by the curve of the Earth. The purpose of communications satellites is to relay the signal around the curve of the Earth allowing communication between widely separated geographical points.

What is optical satellite communication?

Optical satellite communication is a wireless telecommunication network that operates on optical frequency as a medium to deliver data signals at high bit-rate. Optical satellite communication uses free space as a medium for communication. The optical satellite consists of a transmitter, receiver, and channel.

LPF design with pole/zero placement at rejection at specified freq
How do poles and zeros affect frequency response?What is pole-zero placement method?What is zero and pole filter?Do low-pass filters have zeros? How...
How to interpolate the peak amplitude of an fft output?
How do you interpolate FFT?How do you find amplitude in FFT? How do you interpolate FFT?The fastest way to compute a single interpolated FFT spectra...
Where does the following expression for stationary Gaussian Noise come from $\langle \tilde{n}(f)\tilde{n}(f')\rangle = \delta(f-f')\frac{1}{2}S_n$?
Is Gaussian noise stationary?What is Gaussian noise formula?Why is noise Gaussian?Does noise follow Gaussian distribution? Is Gaussian noise station...