How do you calculate minimum bandwidth that a signal requires PSK?

Answer 1

To calculate the minimum bandwidth required for a Phase Shift Keying (PSK) signal, you can use the formula: ( B = \frac{R}{2} ) for binary PSK (BPSK), where ( B ) is the bandwidth and ( R ) is the data rate in bits per second. For higher-order PSK, such as QPSK or 8-PSK, the bandwidth can be calculated as ( B = \frac{R}{k} ), where ( k ) is the number of bits per symbol. Additionally, considering the required filtering and the Nyquist bandwidth, the actual bandwidth may be slightly wider to accommodate spectral shaping.