By November 24, 2022K, P, S

(PSK) an acronym for Phase-Shift Keying is a digital modulation technique that encodes data onto a carrier signal using phase shifts. The phase of the carrier signal is shifted in accordance with the data, and this shift is then detected at the receiver to recover the data. PSK can be used to transmit data over both wired and wireless channels, and it has several advantages over other digital modulation techniques.

One advantage of PSK is its simplicity. Unlike other digital modulation schemes, there is no need for complex demodulation circuitry at the receiver; all that is required are some basic phase-detection circuits. This makes PSK very attractive for applications where cost or complexity are major concerns. In addition, because there are no amplitude or frequency variations in a PSK signal, it can be less susceptible to interference than other types of digital signals.

Another advantage of PSK is its flexibility; by varying the number of phases used (i.e., 2-phase vs 4-phase), different tradeoffs between bandwidth and error rate can be achieved. For example, 4-phase PSK can provide twice the bandwidth efficiency of 2 -phase PSK without sacrificing any error performance. This makes it possible to tailor a given system’s performance to match specific requirements. Finally, PSK signals have good resistance against multipath fading, which often degrades communication quality in mobile environments.

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