Howtosignalprocessing
- What is the formula for data rate?
- How do you calculate data from bandwidth and SNR?
- How do you calculate bandwidth from power spectral density?
What is the formula for data rate?
Plug the amount of data (A) and transfer time (T) to solve for the rate, or speed (S), into the equation S = A ÷ T. For example, you might have transferred 25 MB in 2 minutes. First, convert 2 minutes to seconds by multiplying 2 by 60, which is 120. So, S = 25 MB ÷ 120 seconds.
How do you calculate data from bandwidth and SNR?
In theory, bandwidth is related to data rate by: 1) Nyquist formula: data rate = 2 * bandwidth * log2 (M) ; where M is the modulation level (eg., M=4 for QPSK ). 2) Shannon formula: data rate = bandwidth * log2(1+SNR) ; where SNR is the signal to niose ratio.
How do you calculate bandwidth from power spectral density?
bw = powerbw( pxx , f ) returns the 3-dB bandwidth of the power spectral density (PSD) estimate, pxx . The frequencies, f , correspond to the estimates in pxx . bw = powerbw( sxx , f , rbw ) computes the 3-dB bandwidth of the power spectrum estimate, sxx . The frequencies, f , correspond to the estimates in sxx .
