The article presents the development of a Wireless Physical Layer (PHY) designed to extend CERN's WorldFIP infrastructure, addressing the limitations of cabling within the LHC tunnel. This wireless PHY is based on a Software-Defined Radio (SDR) architecture that includes a Field-Programmable Gate Array (FPGA) and a fully configurable RF front-end. Both components are selected for their radiation tolerance to ensure reliable performance in the LHC's highradiation environment. This solution allows for seamless integration into the existing WorldFIP network without the need for hardware upgrades, offering a flexible and scalable alternative to traditional cabling. The article details the design and implementation process of the PHY and evaluates its performance using actual CERN hardware. Additionally, the study examines the impact of radiation on the wireless link's performance and explores potential improvements to enhance the system's reliability within CERN's control architecture.