Multirate DSP

This course provides a clear and practical understanding of Multirate Digital Signal Processing (DSP) and its real-world applications. It begins with the basics of sampling, signal reconstruction, and sampling rate conversion using multirate building blocks. Learners explore how multirate DSP is used in filter design, filter banks, transmultiplexers, and delta-sigma A/D converters. The course explains the concept of perfect reconstruction filter banks with a strong mathematical foundation, while keeping explanations simple and intuitive. Participants also learn how multirate techniques help achieve higher data capacity in wireless communication systems. Key ideas behind multicarrier modulation, zero padding, and cyclic prefix are discussed in an easy-to-follow manner. The mathematical framework of OFDM and its advanced extensions is introduced step by step. The course further covers the basics of wavelets and multichannel filter banks. Throughout the course, theory is closely linked to practical communication and signal processing systems. Matlab-based exercises are included to help learners visualize concepts and gain hands-on experience.

Source: NPTEL- NOC IITM [Youtube Channel]