Data transmission is the process of sending digital data from one device to another through a communication channel, such as a network or cable. This process involves encoding the data into electrical signals, light pulses, or radio waves, depending on the type of communication medium being used. The goal of data transmission is to ensure that the data is transmitted accurately and efficiently, with minimal errors or delays. Researchers in this area focus on developing and improving communication protocols, encoding techniques, error detection and correction methods, and other technologies to optimize data transmission speed, reliability, and security.