Howtosignalprocessing
- What is channel fading coefficient?
- What is the average SNR of the channel?
- How do you calculate average SNR?
- How does fading affect digital transmission?
What is channel fading coefficient?
The power of channel coefficient of your Rayleigh fading is 1^2 + 1^2 = 2. Which will amplify the transmitted signal. To get Rayleigh channel coefficient with power of one use this: c = (1/2)^0.5 *[ N(0, 1) + j N(0,1)]. when N(0,1) is a Gaussian random variable with 0 mean and 1 variance.
What is the average SNR of the channel?
If distance-dependent and obstacle-dependent signal attenuation is not taken into account (just to isolate the fading effect), the average SNR at the output of the fading channel is the SNR at the input times the second moment of the fading magnitude. Mathematically, SNRo = SNRi x E[a^2].
How do you calculate average SNR?
If you have the signals in decibels (dB), subtract noise from the signal. If your calculations are in watts, use the power signal-to-noise ratio formula SNR = 10 × log(signal / noise) . If your calculations are in volts, use the voltage signal-to-noise ratio formula SNR = 20 × log(signal / noise) .
How does fading affect digital transmission?
Fading can cause poor performance in a communication system because it can result in a loss of signal power without reducing the power of the noise. This signal loss can be over some or all of the signal bandwidth.
