Draw the dpsk waveform for given bit stream assuming the reference bit as 0 or 1.Modulator and demodulator circuit of dpsk. Indicate the transmitted phase.

To draw the DPSK waveform for the given bit stream, we need to follow these steps:

1. Determine the reference bit, which can be either 0 or 1. Let's assume the reference bit is 0.

2. Assign a phase shift of 180 degrees (π radians) to the reference bit. This means that when the reference bit is 0, the transmitted phase will be 180 degrees.

3. For each subsequent bit in the bit stream, calculate the phase shift based on the previous bit. If the current bit is the same as the previous bit, the phase shift will be 0 degrees (no change in phase). If the current bit is different from the previous bit, the phase shift will be 180 degrees.

4. Plot the waveform by representing each bit with its corresponding phase shift. The x-axis represents time, and the y-axis represents phase.

5. Repeat steps 3 and 4 for the entire bit stream.

Regarding the modulator and demodulator circuit of DPSK, here are the steps:

Modulator Circuit:

1. The input bit stream is fed into a phase modulator.
2. The phase modulator applies the phase shift based on the current bit and the previous bit.
3. The modulated signal is then transmitted.

Demodulator Circuit:

1. The received signal is fed into a phase demodulator.
2. The phase demodulator compares the phase of the received signal with the reference phase (180 degrees for the reference bit).
3. Based on the phase difference, the demodulator determines the transmitted bit.
4. The demodulated bit stream is then obtained as the output.

Please note that the specific circuit implementation may vary depending on the technology and requirements.