Wireless systems is a multidisciplinary field of study concerned with the principles, design, and implementation of communication and networking technologies that utilize electromagnetic waves for information transmission without physical conductors. This academic concept investigates phenomena such as radio frequency propagation, modulation, coding, and network protocols, focusing on achieving reliable, efficient, and secure data exchange over the air interface across various scales and applications. Its significance lies in enabling ubiquitous connectivity, supporting mobility, and forming the foundational infrastructure for a vast array of modern technological applications and services.