On the basis of introducing the fundamentals of compressed sensing, this book focuses on the physical implementation technology of the theory in the field of signal sampling – analog to information conversion technology. This book is the outcome and essence of the study of the research group over the past ten years, which contains a complete theoretical derivation, a large number of simulation experiments, hardware implementation of the system and experimental analysis. It can be used as a reference book for researchers and students in communication engineering, signal processing and related fields.