Coherent and Noncoherent Digital Modulation Techniques/Coherent and Noncoherent Detection [HD]

This video lecture discusses Coherent and Noncoherent Digital Modulation Techniques. Here Coherent Vs Noncoherent Detection is explained. Various Advantages (Benefits) and Disadvantages (Drawbacks) of Coherent and Noncoherent Detection techniques are covered. Some Digital modulation techniques use Synchronous detection where the local carrier and carrier at the transmitter are phase locked. they are synchronized (coherent) in both frequency and phase. While the Noncoherent detection does not require the two oscillators (Carriers) to be phase locked. Coherent Vs Non Coherent Modulation (Introduction) On the Basis of presence of Phase-Recovery circuit, we can classify digital modulation techniques into coherent or non coherent techniques. The job of the phase recovery circuit is to keep the oscillators supplying locally generated carrier wave at the receiver; in synchronizm to the oscillator supplying carrier wave at the transmitting end. Actually, We use carrier waves at the transmitting and receiving ends both and for coherent detection these two Carriers should be in synchronism. Here synchronism means, synchronization in both frequency and phase. Coherent Digital Modulation Technique This technique employs coherent detection, the local carrier wave which is generated at the receiver is phase locked with the carrier at the transmitter. Hence both the oscillators (carrier waves) are synchronized in both frequency and phase. In coherent digital modulation technique, The error probability decreases but the system becomes complex. Non Coherent Digital Modulation Technique In non coherent digital modulation technique, there is no need for the two carriers (at transmitter and receiver) to be phase locked. Although in non-coherent technique the system becomes simple but the error probability increases which is in contrast to the coherent detection method. 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 Optical Fiber Communication in HINDI Videos /playlist/PLDp9Jik5WjRthJGcD-2dBYo5zSGS85cA7 Electronics Engineering (Lectures and Circuit Simulations) /playlist/PLDp9Jik5WjRu-ntz8lYYI1XxD2RHQhqXH Operational Amplifier (Op amp) Circuits and Simulations /playlist/PLDp9Jik5WjRs3dT03GsZHPJ5Dagal3OY9 Energy Bands in Solids Videos [HD] /playlist/PLDp9Jik5WjRuIS4hbKhxr7e1sueAboaQA Signals and Systems /playlist/PLDp9Jik5WjRswczwmEVUtsfMMJSBwdiqy Numerical Problems in Engineering [HD] /playlist/PLDp9Jik5WjRvrQe4a_kr7JLOS_DMREsUq Circuits and Systems Videos /playlist/PLDp9Jik5WjRsb6jnt5nD9I0SfS22ia_xa Physics and Science Simulations and Experiments (PhET Simulations) /playlist/PLDp9Jik5WjRvtiHT1_BxAZNidyUUFzIlA RADAR Engineering and Basics /playlist/PLDp9Jik5WjRtzlbAEzwWgTNhgEc1oi59n

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