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Which is the best digital modulation techniques : ASK, FSK, PSK or QAM ? and why ?

There are many digital modulation techniques the most famous are ASK, FSK, PSK and QAM. But which is the best to use and why ?

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Question added by هاشم المشارقة , Key Account Manager , Advanced United Systems Ltd. ( A member of Taj Holding Group)
Date Posted: 2014/08/30
Sherif Serageldin
by Sherif Serageldin , RF DAS Engineer , Eventum IT Solutions

Every modulation technique has it's advantage and disadvantage.But if you are asking which is the best to use I would definetly go with the QAM as it has higher data rates among all techniques but you should maitain a good channel specs as the effect of error increases as the order of QAM increases.

Sunil Kumar
by Sunil Kumar , Practice Director-5G Core, ORAN and Telco Security , Wipro Limted

QAM is the best :-

 

QAM is a combination ASK & PSK - Means using both systems ability to achieve better bit rate in same power as ASK.

QAM can allow bit rate optimization according to the power strength between4 ~64 QAM.

QAM  can use4 bits to64 bits combination to represent a symbol.

 

Slideshare presentation

ASK-PSK-QAM Example

QAM is the best one from them because it has high rate of data and good performance and high BER

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