15ECL76 - Advanced Communication Lab

Course objectives: 

This course will enable students to:

· Design and demonstrate the digital modulation techniques

· Demonstrate and measure the wave propagation in microstrip antennas

· Characteristics of microstrip devices and measurement of its parameters.

· Model an optical communication system and study its characteristics.

· Simulate the digital communication concepts and compute and display various parameters along with plots/figures.

Laboratory Experiments

PART-A: 

Following Experiments No. 1 to 4 has to be performed using discrete

components.

1. Time Division Multiplexing and Demultiplexing of two bandlimited signals.

2. ASK generation and detection

3. FSK generation and detection

4. PSK generation and detection

5. Measurement of frequency, guide wavelength, power, VSWR and attenuation in microwave test bench.

6. Measurement of directivity and gain of microstrip dipole and Yagi antennas.

7. Determination of

a. Coupling and isolation characteristics of microstrip directional coupler.

b. Resonance characteristics of microstrip ring resonator and computation of dielectric constant of the substrate.

c. Power division and isolation of microstrip power divider.

8. Measurement of propagation loss, bending loss and numerical aperture of an optical fiber.

PART-B: 

Simulation Experiments using SCILAB/MATLAB/Simulink or LabView

1. Simulate NRZ, RZ, half-sinusoid and raised cosine pulses and generate eye diagram for binary polar signaling.

2. Simulate the Pulse code modulation and demodulation system and display the waveforms.

3. Simulate the QPSK transmitter and receiver. Plot the signals and its constellation diagram.

4. Test the performance of a binary differential phase shift keying system by simulating the non-coherent detection of binary DPSK.

Course outcomes: 

On the completion of this laboratory course, the students will be able to:

· Determine the characteristics and response of microwave devices and optical waveguide.

· Determine the characteristics of microstrip antennas and devices and compute the parameters associated with it.

· Simulate the digital modulation schemes with the display of waveforms and computation of performance parameters.

· Design and test the digital modulation circuits/systems and display the waveforms.