This century is the digital era, where digital information plays a key role in our daily lives. The digital communication industry is enormous and rapidly growing, roughly comparable in size to the computer industry. However, the tremendous growth of computing power in terms of speed, memory capacity, and the intervention of artificial intelligence, machine /deep learning algorithms, as well as the Internet of Things (IoT) introduced a variety of digital processing applications. This book follows a holistic approach and presents the theory and application of the design philosophy of the subject- digital communication systems. Developers should be able to solve problems with innovation, creativity, and active initiators of novel ideas. However, learning and teaching have changed from conventional education to outcome-based education.