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EC-403 · Analog Communication/Official Syllabus

Analog Communication (EC-403) - Official Syllabus

1
Unit 1

Frequency domain representation of signal

  • Frequency domain representation of signal: Fourier transform and its properties
  • condition of existence
  • Fourier transform of impulse, step,signum , cosine, sine, gate pulse, constant
  • properties of impulse function
  • Convolution theorem (time & frequency)
  • correlation(auto & cross)
  • energy & power spectral density
2
Unit 2

Introduction

  • Overview of Communication system
  • Communication channels
  • Need for modulation
  • Baseband and Pass band signals
  • Amplitude Modulation: Double side band with Carrier (DSB-C)
  • Double side band without Carrier
  • Single Side Band Modulation
  • DSB-SC, DSB-C, SSB-SC
  • Generation of AM, DSB-SC, SSB-SC, VSB-SC & its detection
  • Vestigial Side Band (VSB)
3
Unit 3

Types of angle modulation

  • Types of angle modulation
  • narrowband FM
  • wideband FM, its frequency spectrum
  • transmission BW
  • methods of generation (Direct & Indirect)
  • detection of FM (discriminators: balanced, phase shift and PLL detector)
  • pre emphasis and de-emphasis
  • FM transmitter & receiver: Block diagram ofFM transmitter& receiver
  • AGC, AVC, AFC
4
Unit 4

AM transmitter& receiver

  • AM transmitter& receiver: Tuned radio receiver &super heterodyne
  • limitation of TRF
  • IF frequency
  • image signal rejection
  • selectivity, sensitivity and fidelity
  • Noise in AM, FM
5
Unit 5

Noise

  • Classification of noise
  • Sources of noise
  • Noise figure and Noise temperature
  • Noise bandwidth
  • Noise figure measurement
  • Noise in analog modulation
  • Figure of merit for various AM andFM
  • effect of noise on AM &FM receivers

Laboratory Experiments

  • To analyze characteristics of AM modulator & Demodulators.
  • To analyze characteristics of FM modulators& Demodulators.
  • To analyze characteristics of super heterodyne receivers.
  • To analyze characteristics of FM receivers.
  • To construct and verify pre emphasis and de-emphasis and plot the wave forms.
  • To analyze characteristics of Automatic volume control and Automatic frequency control.
  • To construct frequency multiplier circuit and to observe the waveform.
  • To design and analyze characteristics of FM modulatorand AM Demodulator using PLL.

Reference Books

  • Communication System — Simon Haykins — John Willy
  • Communication System — Singh, Sapre — TMH
  • Modern Digital and analog communication system — B.P. Lathi — TMH
  • analog and Digital communication — Singhal — TMH
  • Analog communication — Rao — TMH
  • principal of communication of analog and digital — P K Ghose — universities press
  • Communication System — Taub, shilling — TMH
  • Analog and digital communication(Schaum) — Hsu — TMH
  • fundamental of communication system — Proakis — Pearson edition
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