Modulation

Phase Shift Keying

Digital Modulation and Shift Keying

“Modulation of digital signals is known as Shift Keying” There are 3 Digital Modulation: Phase Shift Keying (PSK) Frequency Shift Keying (FSK) Amplitude Shift Keying (ASK) Amplitude Shift Keying (ASK) Pros: simple Cons: susceptible to noise Example: Many legacy wireless systems, e.g. AMR Frequency Shift Keying (FSK) Pros: less susceptible to the noise Cons: theoretically […]

Amplitude modulation

Modulation Methods

We have a low frequency signal and want to send it at a high frequency, for this modulation is required. “Modulation is the process of superimposing the low frequency signal onto the high frequency signal”. Modulation Schemes There are three modulation schemes are available: Amplitude Modulation (AM) Amplitude Modulation is the amplitude of the carrier […]

Amplitude modulation

What is Modulation? | Types of Modulation

Basic characteristic of RF transmission system is modulation. This is the technique in which the information is overlay on the radio carrier frequency. There are many techniques in which a radio carrier can be modulated to carry a given signal. The selection of modulation has a key decision in any radio communications system and has […]