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Department of Electronics & Communication Engineering

Indian Institute of Information Technology Guwahati

Communication Laboratory

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About

Understanding complex communication systems and implementation thereof is not easy without the appropriate support of laboratory experiments and demonstrations. This laboratory provides the necessary training resources for undergraduate students in Electronic & Communication Engineering. The career outlets from these degrees vary from industrial to research & development sectors. The objective of this lab is to familiarize students with the rapidly evolving world of modern communications.

Students perform practical exercises on specially designed training panels and modules that offer a complete course of study into the fundamentals of analog and digital communications

  • Analog Communications Training Panel System: It provides training to students on modulation techniques such as AM (Amplitude Modulation) and FM (Frequency Modulation)
  • Digital Communications Modules: It provide students with a complete introduction to digital communications like signal sampling & reconstruction
  • Digital Signal Processing Modules: It provide students with a complete introduction to generate different signals, designing different filters like IIR, FIR etc .

Contact Persons

Faculty In-charge

Dr. Kukil Khanikar

STS In- charge

Arup Borah

Hardware Facilities Under Communication Laboratory

Arbitrary Function Generator (25 MHz Double Channel )
Digital Storage Oscilloscope (100 MHz Two Channel )
Triple Output DC Power Supply
Digital Multimeter
NI USRP 2920, 20 MHz Bandwidth, 50 MHz to 2.2 GHz SDR
NI USRP 2932 400 MHz to 4.4 GHz SDR with GPS Clock

Software Facilities Under Communication Laboratory

LabVIEW 2014
MATLAB & SIMULINK
Code Composer Studio (CCS) Integrated Development Environment (IDE)

Laboratory Courses

EC252 Communication Laboratory

  • Generation of Amplitude Modulated Signals using multiplier IC AD633 and Demodulation using Envelop Detector
  • Generation of DSB-SC Amplitude Modulated Signals using a Diode-based Ring Modulator circuit and Demodulation using Envelop Detector
  • Generation of DSB-SC Amplitude Modulated Signals using multiplier IC AD633 and Demodulation using Envelop Detector
  • Generation of DSB-SC and conventional Amplitude Modulated Signals using the Balanced Modulator IC MC1496
  • Generation of Frequency Modulated Signals using IC555 configured as Voltage Controlled Oscillator
  • Demodulation of Frequency Modulated Signals using slope detector circuit
  • MATLAB Experiments
  • Simulation of Amplitude Modulation
  • Simulation of Amplitude Demodulation using Envelop Detector
  • Simulation of Frequency Modulation

EC352 Digital Communication Laboratory

  • Designing Orthogonal Frequency Division And Multiplexing (OFDM)
  • Designing QPSK and BPSK modulator.
  • Finding BER for QPSK and BPSK
  • Designing DPSK
  • BER of BPSK transmission over noise with using Monte Carlo simulation
  • BER of QPSK transmission over noise with using Monte Carlo simulation
  • Designing QAM (Quadrature Amplitude Modulation)
  • Designing Pulse-Width Modulation (PWM)
  • Designing Pulse-Position Modulation (PPM)
  • Designing AM/FM using USRP (Universal Software Radio Peripheral)

EC244 Digital Signal Processing Laboratory

  • Generation of signals
    1. Ramp signals at different sampling frequencies
    2. Sinusoid signals
    3. Multi-toned sinusoid signals
    4. Pseudo Random Noise Sequence
    5. Generation of AM and FM signals
    6. Echo generation using three different delay
  • Application of mean filtering on a noisy sinusoid.
  • Application of autocorrelation function to generate sinusoid from a noisy signal.
  • Design of filters, IIR filter and FIR filter