Simulink Implementation of Costas Loop

In this documentation, we will implement a Costas loop using MATLAB's Simulink environment through an .mhl file. The Costas loop is a widely-used digital modulation technique extensively applied in communication systems. By utilizing Simulink, we can effectively simulate and analyze the performance of the Costas loop while optimizing its parameters. During implementation, we will employ various MATLAB tools and functions to construct different components of the Costas loop, including phase detectors, loop filters, and voltage-controlled oscillators (VCOs). This process will demonstrate how to use Simulink's block diagram interface to model the phase-locked loop mechanism, where key blocks like the Product block serve as phase detectors and the Transfer Function block implements the loop filter. Through this approach, we will learn to design and implement complex communication systems using Simulink and MATLAB, enhancing our understanding of Costas loop principles and applications for practical implementation scenarios.