Definitions for "Physical layer"
Layer 1 of the OSI Reference Model; primarily responsible for the transport of bits between adjacent devices in a network, describing electrical and mechanical characteristics of the connection and media.
Within the OSI model, lowest level of network processing below the link layer that is concerned with the electrical, mechanical and handshaking procedures over the interface that connects a device to a transmission medium (example, RS-232-C).
The first layer of the OSI Reference Model. The OSI model has been designated by ITU and ISO to enable data communication between different computers, and it standardizes both the overall network structure as well as protocols used therein. Physical Layer is where the actual data transmission takes place. see OSI Reference Model
Comprises and Radio Frequency Front-end (RF), Digital Front-end (DFE) and Baseband (BB) processing part.