how to change bpsk modulation by ook modulation for any distribution?

i do monti carlo simulation for bpsk but i want to do in ook modulation ,then how to change this modilation?

Answer 1

[Shashi Kiran]

Hi Manoranjan,

• In Binary Phase Shift Keying (BPSK), binary data x is transformed into two distinct signal phases and the mapping is given by , which maps binary 0 to -1 and binary 1 to +1. This results in a signal where the phase (or polarity) is flipped between the two possible binary values.
• In In Amplitude Shift Keying (ASK)/On Off Shift Keying (OOK), binary data x is directly mapped to amplitude levels i.e., maps to 0 (no signal) and maps to A (signal with amplitude A).This results in a signal where the presence or absence of the signal corresponds directly to the binary data.

You can find the below code for reference.

binary_data = [0 1 0 1 1 0 1 0];

% BPSK mapping: 
bpsk_signal = 2*binary_data - 1; % [-1,1,-1,1,1,-1,1,-1]

% ASK/OOK mapping: 
A = 5; % Amplitude for the '1' bit
ask_signal = A * binary_data; % [0,5,0,5,5,0,5,0]

Hope this helps.