Wireless Communication
Wireless Communication Communication n Is the exchange of information n This exchange achieved through signals n Verbal and non verbal Signals n A signal is a set of information or data n May be electrical, electromagnetic, acoustic optical and so many others. n A communication is termed as accordingly n Communication by electromagnetic signals is termed as radio communication n Analog signal - signal intensity varies in a smooth fashion over time • No breaks or discontinuities in the signal n Digital signal - signal intensity maintains a constant level for some period of time and then changes to another constant level n Periodic signal - analog or digital signal pattern that repeats over time • s(t +T ) = s(t ) where T is the period of the signal n A common signal (Sinusoidal or Sine wave) General Sine wave is represented by ...