Wireless communication systems are widely used for communication purposes in various fields such as military, healthcare, transportation, and others. The modulation technique used in these systems plays a vital role in the transmission of data between the transmitter and receiver. In this comparative study, we analyse the performance of different modulation techniques used in wireless communication systems. The four modulation techniques used in this study are amplitude modulation (AM), frequency modulation (FM), phase modulation (PM), and quadrature amplitude modulation (QAM). These techniques differ in the way they modulate the carrier signal, resulting in different signal characteristics and performance metrics

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