1. Justin Andrews
ACSG 525
Amplitude modulation: Used in electronic communication for transmitting information via a radio
carrier wave. It varies the strength of a transmitted signal relating to the information sent. It’s
simple to implement, can be demodulated using a simplified circuit, and AM receivers are also
very cheap since special components aren’t needed. Drawbacks include a lack of efficiency when it
comes to its power usage, use of bandwidth, and that it’s susceptible to noise. One way it’s used
today is through AM radio.
Frequency modulation:Conveys information over carrier waves by varying the frequency. Its
known for being able to handle noise of significant levels, its ease of implementation, and signals
can be amplified through specific means, requiring less battery power in the process. The
problems it faces are that it requires much more bandwidth and can use rather complicated
receivers and transmitters. Similar to AM, frequency modulation can be seen in use via FM radio.
Phase modulation: Represents information with variations to phases of a given carrier wave. It’s
used less often in comparison to FM due to using more complex hardware.Despite the complex
hardware, it can be easier to implement. Phase ambiguity can be a problem, however, if set limits
are exceeded. Phase modulation can be seen in use today through all higher performance
modems.