EC3491 Communication SYSTEMS (CS)

Stuff Sector

Prepared by
S.Santhosh (Admin)
Important questions
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UNIT -1
1. Method of generating AM**
2.superhetrodyne receiver
3. Dsb-Sc AM and generating it
Rare
4. Hilbert transform
UNIT-3
1. DM,noise considerations In PCM
2. Hamming code, convolutional codes
3. vetribi decoder

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UNIT-4

1. BPSK

QPSK

BFSK

2. carrier recovery

3. signal genration, detection, iq representation

UNIT-5

1. optimum demodulation of digital signals over band **

2. coherent communications with waveforms**
3. element of detection theory and detection of signal in noise

UNIT-2

1. Quantization**

2. Low pass sampling and signal reconstruction**

3. PWM,PCM ,Fdm

**Very important questions are bolded and may be asked based on this topic

PART-C

1.Compulsory Questions {a case study where the student will have to read and analyse the subject }

mostly asked from unit 4 and 2 (OR) a Problem given

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Contact uS *These questions are expected for the exams This may or may not be asked for exams
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EC3491 Communication SYSTEMS (CS)