Laboratory report. Quadrature modulation. Quadrature Phase Shift Keying - 4 phase shift keying (QPSK-4PSK).

I am in need of a laboratory report that delves into the theory and principles of Quadrature Modulation, Quadrature Phase Shift Keying (QPSK-4PSK). The report should cover the following:

- An overview of Quadrature Modulation and Quadrature Phase Shift Keying
- Explanation of 4-phase shift keying (QPSK-4PSK)
- Mathematical expressions for the modulation and demodulation process
- Block diagrams for the modulation and demodulation process
- Explanation of the constellation diagram
- Performance analysis of QPSK-4PSK
- Any other relevant information

Ideal skills and experience for this job include:

- A strong background in digital signal processing and communication systems
- Experience in designing and implementing modulation and demodulation schemes
- Familiarity with MATLAB and simulation tools
- Strong technical writing skills and the ability to present complex information in a clear and concise manner.