Simulation of 2 or more signal using the same frequency

Hello everyone,

I'd to ask if it possible to simulate the 2 or more singal using the same frequency and combine them together in matlab/simulink?

For example.

Signal 1 (Primary) is BPSK modulation with 10kHz Bandwidth operate at 1 GHz

Signal 2 (Interefer) is QPSK modulation with 100 kHz Bandwidth operate at 1 GHz

is it possible to do in this way? if yes, the receiver will be able to demod the signal 1 correctly?

Seeking for your advise.

Best Regards,

Fumihiko Sato

Answer 1

[Rishav]

Yes, it is possible to simulate two or more signals using the same frequency and combine them in MATLAB/Simulink. This technique is known as frequency division multiplexing.

In your example, you can simulate the BPSK and QPSK modulated signals separately using MATLAB/Simulink and then combine them using an appropriate mixer circuit. However, since the two signals have different bandwidths, you may need to filter them before combining to avoid interference between them.

Regarding the receiver's ability to demodulate Signal 1 correctly, it depends on the receiver's design and the amount of interference caused by Signal 2. If the receiver is designed to demodulate a BPSK signal with a 10kHz bandwidth, it should be able to extract Signal 1 correctly as long as the interference from Signal 2 is sufficiently low. The exact level of interference that can be tolerated depends on various factors, such as the signal-to-noise ratio (SNR), the modulation scheme, and the receiver's sensitivity.