Modulation Sender changes the nature of the signal in a way that the receiver can recognize Similar to radio: AM or FM Digital transmission; encodes the values o or in the signal. >)It is also possible to encode multi-valued symbols Amplitude modulation: change the strength of the signal, typically between on and off 》 Sender and receiver agree on a“rate” >)On means 1, Off means 0 Similar frequency or phase modulation Can also combine method modulation types. 66 Modulation Sender changes the nature of the signal in a way that the receiver can recognize. » Similar to radio: AM or FM Digital transmission: encodes the values 0 or 1 in the signal. » It is also possible to encode multi-valued symbols Amplitude modulation: change the strength of the signal, typically between on and off. » Sender and receiver agree on a “rate” » On means 1, Off means 0 Similar: frequency or phase modulation. Can also combine method modulation types