Multirate Signal Processing

Multirate signal processing plays a crucial role in communication systems, enabling efficient handling of signals with varying sampling rates. For instance, digital modulation and demodulation techniques often require processing signals operating at different rates. The provided classic source code examples demonstrate practical implementations of multirate signal processing algorithms, including key techniques such as interpolation (upsampling with filtering) and decimation (downsampling with anti-aliasing filters). These examples help deepen understanding of fundamental principles like polyphase filtering structures and multistage implementations that optimize computational efficiency. By executing these programs, engineers can gain hands-on experience with rate conversion methodologies, filter design considerations for multirate systems, and practical applications in digital communications, thereby enhancing their proficiency in developing efficient communication system solutions.