i want the differences between ASK and AM ,FSK and FM ,PSK and PM'' ...to be precise i want to know Analog modulation versus Digital modulation(ASK vs AM,FSK vs FM, PSK vs PM). which one is superior....in terms of bandwidth,SNR or
P(e), modulating and demodulating complexity and so on..
i want the differences between ASK and AM ,FSK and FM ,PSK and PM'' ...to be precise i want to know Analog modulation versus Digital modulation(ASK vs AM,FSK vs FM, PSK vs PM). which one is superior....in terms of bandwidth,SNR or
P(e), modulating and demodulating complexity and so on..
Of course digital communications methodology is better , for more reading on this topic , you can read " Principles of communication systems " by taub & schiling
In terms of SNR digital modulation schems(FSK...) are superior than Analog modulations(FM...) for further details refer Communication systems by taub and shilling.
For Complete understanding you should read system communication book, but i get an example :
your voice is wave. and it is an analog wave. if you digitize your voice with Analog to digital convertor then your voice will change to some 0 and 1. then if you send a short wave for 1s and do not sending any wave for 0s then it is ASK. it is the presence of signal for 1s and no presence of sigmal for 0s.