Amplitude Shift Keying Modulation/ASK Modulation (Digital Modulation Techniques and Schemes) [HD]

This Video discusses Amplitude Shift Keying (ASK). ASK is a Digital Modulation Technique. The Waveform, Definition and Basic Concepts of amplitude shift keying (ASK) are discussed here. This Video also explains the basic difference between digital modulation and analog modulation (Analog modulation Vs Digital modulation).The basic difference between various digital modulation techniques like amplitude shift keying (ASK), frequency shift keying (FSK) and Phase shift keying (PSK) is also discusses here. Amplitude shift keying (ASK) In ASK, the amplitude of the carrier wave is changed (switched) according to the digital input signal (modulating signal). Therefore amplitude shift keying is analogous to Amplitude Modulation (analog modulation). ASK is analogous to AM, because in Amplitude Modulation (AM), amplitude of the carrier wave is changed according to the instantaneous value of the modulating (message) signal, in the same way in ASK also, the amplitude of the carrier wave is switched (varied) according to the instantaneous value of the modulating signal (digital input signal). The difference is only of the nature of the modulating signal. In amplitude modulation, the modulating signal is of analog kind but in digital modulation, it is a stream of digital bits. Now Let's understand the concept of amplitude shift keying (ASK) with the help of an example. Amplitude Shift Keying, ASK, ASK Waveform, Amplitude Shift Keying (ASK) Waveform Amplitude Shift Keying (ASK) Waveform Here in this image observe that we are going to modulate a sinusoidal carrier wave (shown in green colour), with the digital input signal (0 1 1 0 0 1). This image also shows the ASK waveform (modulated signal). So now it's time to understand, how this amplitude shift keying takes place. In amplitude shift keying, we change the amplitude of this sinusoidal carrier wave according to the digital input signal which is acting as modulating signal (message signal) here. So the basic concept is, we do not transmit the carrier wave when the digital input signal is '0', and transmit the sinusoidal carrier as it is, for digital input signal '1'. You can observe this phenomena in the image carefully, that in this example, we have digital input signal '0', at three places, so for these three digital '0', no carrier signal has been transmitted. But for binary '1' at three places, the full carrier wave has been transmitted without any change. Here the amplitude of the sinusoidal carrier wave is switched, as per the digital input signal. The carrier wave is either not transmitted or transmitted for digital input signal '0' or '1' respectively. That is why amplitude shift keying (ASK) is also called as "ON - OFF Keying (OOK)". Visit My blog for more information https://www.engineeringmadeeasypro.com/ Please Support me on Patreon https://www.patreon.com/user?u=20310205 Like my Facebook Page https://www.facebook.com/lalitvas/?ref=aymt_homepage_panel Join my Facebook Group https://www.facebook.com/groups/1865786296998316/ PLAYLISTS on different Topics (Choose from the Large Collection of Videos) Electronics and Communication (ECE) Lecture Videos (GATE and IES) /playlist/PLDp9Jik5WjRtkw7q3aaVvMtLJiiw62V-H Communication Systems (Analog and Digital ) /playlist/PLDp9Jik5WjRuUyDT6961r8pkelgJMG8fG Modulation (Analog and Digital) /playlist/PLDp9Jik5WjRsXMtMxv80RTi-9Kvvo4Uvu Continuous Wave Modulation (AM, FM and PM) /playlist/PLDp9Jik5WjRtjhcs_NJrhydaQ8H5zSWPw Amplitude Modulation (AM Modulation) /playlist/PLDp9Jik5WjRs9kfzp-jqV9O5UGfDXAfUc Pulse Modulation Techniques (PAM, PWM, PPM and PCM) /playlist/PLDp9Jik5WjRvjqQ6ruRFC6hZcxnOsp3BE Digital Modulation Techniques Lectures [HD] /playlist/PLDp9Jik5WjRs5ismlsqP_Q3JNlWOe-2an Electronics and Communication (ECE) NOTES (Handwritten and PPT Notes) /playlist/PLDp9Jik5WjRuUms7dHboHxiOaQywkXfQU Analog Communication Videos /playlist/PLDp9Jik5WjRu3rNvhqGjqgInU8zF6jE9s Analog and Digital Communication /playlist/PLDp9Jik5WjRsLppnN81bheIwGB8Hsx_Xa Modulation Notes (PPT) Slides /playlist/PLDp9Jik5WjRvq7v13GPy60AwuoUTYxgD3 Random Variables and Probability Distribution /playlist/PLDp9Jik5WjRtVUYHjx_Q0KohHqqDVKhcX Optical Fiber Communication /playlist/PLDp9Jik5WjRuxzZArqomE59SFmhVv5qPO Optical Fiber Communication Notes (PPT) Slides /playlist/PLDp9Jik5WjRvW6ElWC7aOz9iDmCv1fWSI

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