Discrete Systems And Digital Signal Processing With MATLAB, Second Edition Free Download TOP
In this introductory chapter, we first describe the historical perspective related to both wireless and optical communication systems and describe various generations, from early beginning until today. After that we describe the fundamentals of optical systems and networks, including WDM network architecture, typical optical networking architecture, bit rates for synchronous/asynchronous optical communication systems, and wavelength regions for fiber-optics communications. In the same section, we briefly describe various multiplexing schemes such as time-division multiplexing (TDM), wavelength-division multiplexing (WDM), frequency-division multiplexing (FDM), subcarrier multiplexing (SCM), code-division multiplexing (CDM), polarization-division multiplexing (PDM), and spatial-division multiplexing (SDM). We also identify the main noise sources and optical channel impairments, in particular of importance for fiber-optics communications. After that the key optical devises and modules are identified and briefly described. In section related to wireless communications fundamentals, we describe a typical wireless communication…