Binary Phase-Shift Keying (BPSK) is one of the modulation methods of Phase-Shift Keying (PSK), which uses two phases.
BPSK signal is descrived as below.
\[s(t) = A\cos{(2\pi ft+\phi)}\]
where \(A\) is amplitude of carrier wave, \(f\) is frequency of carrier wave.
\(\phi\) is phase depending on signal,
- If 1, \(\phi = 0\)
- If 0,\(\phi = \pi\)
Using this equation, BPSK signal can be shown as:
This is Power Flux Density (PFD) of BPSK.
\[P_{BPSK}(f) = \frac{E_b}{2}\left[\left(\frac{\sin{\pi (f-f_c)T_b}}{\pi (f-f_c)T_b}\right)^2+\left(\frac{\sin{\pi (f+f_c)T_b}}{\pi (f+f_c)T_b}\right)^2\right]\]
