Wireless systems refer to communication technologies that allow data to be transmitted without the need for physical cables or wires. This research area encompasses a wide range of topics, including wireless communication protocols, network architectures, signal processing, antenna design, and interference mitigation techniques. Researchers in wireless systems are focused on developing novel solutions to improve the efficiency, reliability, and security of wireless communication systems, as well as expanding the capabilities of wireless networks to support a growing number of connected devices and applications. Key challenges in this field include spectrum management, resource allocation, energy efficiency, and the development of new technologies such as 5G and beyond for future wireless networks.