ISRO , SCIENTIST/ENGINEER
(AIR-8)  ISRO,  E & T Engineer,
 Always remember you are different from others( If u Think u Can )

Rahul Pathak

Digital communication which is very important course for electronics & Communication and for the electrical branch. Here Rahul will discuss all basic and important concept of digital communication in respect to examination.

GATE (Graduate Aptitude Test in Engineering) 2020 & 2021 complete preparation with best educators. Know about the detailed syllabus, best books, exam pattern and dates, previous year question papers a

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Hindi

(Hindi) Digital Communication: GATE

Classification of Signals

Signals & Systems

GATE & ESE - EE, EC

GATE, ESE and IIT-JAM

Ace the toughest competitive and government exams in India 

Test Preparation

Digital Communication (in Hindi)

Concept of continuous to discrete conversion (Sampling theorem) , over-sampling , critical sampling , under- sampling.

Sampling Theorem Part-1 (in Hindi)

Aliasing concept , anti aliasing filter(LPF) , questions on Nyquest rate and Nyquest interval

Sampling Theorem Part-2 (in Hindi)

Previous years questions on Nyquest rate and nyquest interval

Sampling Theorem Part-3 (in Hindi)

Classification of modulation, pulse analog modulation ,pulse digital modulation, bandpass modulation, binary signalling , M-ary signalling

Classification of digital modulation (part-1)

PCM process Block diagram , Quantization error, quantizers, Encoder.

Pulse code modulation (Part-1)

Encoder , Quantization process, step size , Quantization error , maximum quantization error , exam oriented formula.

Pulse code modulation (Part-2)

Bit rate concept , Bandwidth requirement for PCM(Maximum , Minimum )

Bit rate concept

PCM all parameter calculation , previous years questions

Previous year Questions (PCM) Part-1

Previous years questions on PCM systems , quantization characteristics

Previous years questions PCM (Part-2)

Noise in PCM , Regenerated repeater, disadvantage of PCM systems.

Noise in PCM systems

Quantization noise, uniform quantizing , non uniform quantizing , signalling format

Quantizing Noise

Signalling scheme (Line code)

Time division multiplexing , bit rate of TDM , block diagram

Time division multiplexing (Part-1)

TDM (PART-2)

TDM (PART-3)

Differential pulse code modulation , transmitter and receiver block diagram

Differential pulse code modulation

SNR in PCM systems , previous years question

Signal to Noise Ratio (SNR) in PCM

Previous year question on SNR calculation(PCM)

Pulse shaping filter , raised cosine filter , Inter symbol Interference , bandwidth of raised cosine filter

Pulse Shaping and Raised Cosine Filter (Part-1)

Raised cosine filter previous years question , Mix concept of PCM , TDM, cosine filter based questions.

Raised cosine filter (PART-2)

Delta modulator sampling rate, DM transmitter, errors , Demodulation , quantization level in DM

Delta Modulation (PART-1) ISRO , ESE, GATE

Delta modulation Receiver , condition of perfect reconstruction of DM , slope overload error , grannular error , analysis of sinusoidal signal.

Delta modulation (PART-2)

Analysis for sinusoidal signal , condition to avoid delta modulation, limitation of DM

Delta modulation (PART-3)

Signal to noise ratio(SNR) in DM , previous years questions

SNR of Delta modulation

Delta modulation Previous years questions , questions based on SNR

Delta modulation (SNR) previous years questions

Digital band pass signalling scheme , BASK , BPSK , BFSK. Energy of Modulated signal

Digital Bandpass modulation scheme

Amplitude shift keying , Generation and detection of Ask signals, quadrature null effect in ASK

Binary signalling scheme (PART-1)

Quadrature null effect in ASK , Transmission bandwidth , Energy Per bit Analysis

Binary signalling scheme (Part-2)

Constellation diagram for ASK , calculation of probability of error form constellation diagram

Binary signalling scheme (Part-3)

Phase shift keying (PSK), Generation and coherent detection of BPSK signals ,Quadrature Null effect in PSK

Binary signalling scheme (Part-4)

Transmission bandwidth requirement for PSK , constellation diagram for BPSK , energy per bit analysis

Binary signalling scheme (Part-5)

Frequency shift keying , FSK generation , graphical Interpretations.

Binary signalling scheme (Part-6)

FSK Receiver , transmission bandwidth for FSK, limitation , constellation diagram

Binary signalling scheme (Part-7)

Comparison in constellation diagram of ASK , PSK , FSK , Probability of error concept , question

Binary signalling scheme (Part-8)

QPSK introduction , previous year question.

Quadrature Phase shift keying (QPSK) Part-1

QPSK representation , Constellation diagram , generation and detection.

Quadrature Phase Shift keying (QPSK) Part-2

Minimum shift keying , minimum separation between the frequency

Minimum phase shift keying

M-ARY signalling scheme , 2-ARY PAM signal , Baud Rate, bite rate and relation between them.

M-ARY signalling (PART-1)

Bandwidth requirement for different type of M-ary signalling scheme. Baud rate and bit rate relation , M-ary band Pass signalling scheme

M-Ary signalling scheme (PART-2)

2-Ary PSK , 4-Ary PSK , 8 Ary PSK , bandwidth requirement of Bandpass M-Ary PSK signals

M-Ary signalling scheme (PART-3)

Constellation diagram of 2-Ary PSK , 4-Ary PSK , 8-Ary PSk .
Distance between each signalling point. 
Comparison b/w 2Ary and 4 Ary PSK

M-Ary signalling scheme (PART-4)

Concept of noise effect between 2 point in M -ary PSK scheme , important points .

M- Ary signalling scheme (Part-5)

M-Ary PAM/ASK Signal constellation diagram ,M-ary FSK

M-Ary Signalling scheme (PART-6)

M-ary FSK signal , constellation diagram and important previous questions

M-Ary signalling scheme (Part-7)

M-Ary quadrature Amplitude modulation , constellation diagram , symbol rate , bandwidth requirement .

M-Ary signalling scheme (Part-6)

B.Tech. graduate from ECE with First Division Honours. Engineer by profession Educator by passion. My Motive is to 'Grow & Learn' always.

Indu Yadav

This course discusses the introduction to sampling, then sampling theorem, Nyquist rate and Nyquist interval. Indu Yadav will also take you through some practice numerical on the same concept.

Sampling Theorem: GATE (ECE)

Persuing M.tech in Power Electronics and Power system from NIT Goa. I love teaching #passion. Gate 2019 qualified. Won competition LFR RACE,

Mayank Arora

This course is divided in 12 parts like signal definitions, operations, properties, fourier series, laplace, sampling theroem, discrete time system, z transform, discrete fourier transform, FFT, Digital Filter

(Hindi) Signal and System

Control Engineer | Electrical and Electronics Graduate | 996th rank in KCET |

Vidhya T

This course will help you start your journey into signals and systems with the stepping stone consisting of required basics to master the subject. Covered topics in the course are - Types of Signals, Finding Energy/Power/Period of signals, Operations on Signals and Properties of systems.

Signals and Systems and their Properties

Hey guys, myself Ruchi Singh.
I have completed my graduation (BE in ECE) 
YouTube channel :StudyECE 

Ruchi Singh Lodhi

In this course, educator will be teaching about
 signals and systems. And here I'm going to explain all the important concepts from beginning to end.

(Hindi) Signals and Systems - GATE (ECE)

I secured AIR-99 in GATE-12 and 7 years coaching exp. I am here to share and improve my knowledge.

Kapil Gupta

In this course, the educator will cover all concepts, short tricks with previous years questions for GATE ECE.

Signals and Systems for GATE ECE

In this course, the educator discusses the concepts in Fourier series  in Signals and Systems for GATE(ECE).

Lessons

46 lessons • 9h 50m

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Digital Communication (in Hindi)

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Sampling Theorem Part-1 (in Hindi)

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Sampling Theorem Part-2 (in Hindi)

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Sampling Theorem Part-3 (in Hindi)

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Classification of digital modulation (part-1)

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Pulse code modulation (Part-1)

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Pulse code modulation (Part-2)

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Bit rate concept

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Previous year Questions (PCM) Part-1

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Previous years questions PCM (Part-2)

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