plot_const
Plot a scatter plot or a theorical constellation diagram
Séquence d'appel
plot_const(x) // Scatter plot view
plot_const(x,'i') // Scatter plot view, force identic x and y scale
plot_const(wf) // Waveform constellation plot
plot_const(x) // Scatter plot view plot_const(x,'i') // Scatter plot view, force identic x and y scale plot_const(wf) // Waveform constellation plot
Paramètres
- x:
I/Q signal (I is real part, Q is imaginary part) to plot
- wf:
waveform object (as can be initialized by wf_init)
I/Q signal (I is real part, Q is imaginary part) to plot
waveform object (as can be initialized by wf_init)
Description
Plot 
.
Example 1: plotting a theorical constellation
wf = wf_init('qpsk'); clf(); plot_const(wf); |
Example 2: Scatter plot
// Generate a test 8PSK signal, with: // sampling frequency = 1 MHz, zero IF, symbol frequency = 100 kHz fs = 1e6; fi = 0; fsymb = 100e3; mod = mod_init('8psk',fs,fi,fsymb); b = prbs(1000); // Random bit sequence [mod,x] = mod_process(mod,b); x = awgn(x,0.02); // Add some noise clf(); plot_const(x, 'i'); |
