The Physical Layer

This lecture briefly present on the Physical Layer. Here focus on the Theoretical Basis for Data Communication: Fourier Analysis, Bandwidth-Limited Signals and Maximum Data Rate of a Channel. This lecture also explain on Bandwidth-Limited Signals, Guided Transmission Data, Twisted Pair, Coaxial Cable, Transmission of Light through Fiber, Fiber Optic Networks and Wireless Transmission. Finally discuss on Politics of the Electromagnetic Spectrum, Lightwave Transmission, Communication Satellites etc.