MATLAB Implementation of Continuous Phase Modulation
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This content discusses continuous phase modulation (CPM), a technique covered in section 4.3.3 of digital communication systems. CPM enables different modulation effects through parameter coefficient adjustments. This modulation technique holds significant importance in digital communication applications. By modifying coefficients such as modulation index, pulse shape, and frequency deviation parameters, we can achieve more flexible and diverse signal modulation schemes to meet various communication requirements. In MATLAB implementation, key functions would include designing phase trajectories using cumulative phase calculations, implementing smooth phase transitions through frequency pulse shaping filters (like raised-cosine or Gaussian pulses), and generating modulated signals using exponential phase modulation techniques. The core algorithm maintains phase continuity by ensuring the integral of frequency pulses results in smooth phase transitions between symbols.
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