VLSI Based Digital Communication Training System

Study of sampling techniques

Natural sampling, Sample and hold, Flat top sampling

Effect of various sampling frequencies and duty cycles l Effect of sampling frequency Effect of duty cycle

Effect of order of the low pass filter

Study of TDM with different receiver synchronization techniques

• Using the direct synchronization technique l Clock recovery through PLI l Clock recovery through threshold detector

Study of pulse code modulation and demodulation

Direct synchronization technique l Bit synchronization technique l Frame synchronization technique

Effects of parities and hamming code on PCM data

• None Parity, E
• N o n e p a r i t y, E v e n p a r i t y, O d d p a r i t y,

Hamming code

Study of PRBS

Study of various data encoding and decoding techniques l NRZ- L, NRZ- M, NRZ- S. 810-1. BlO-M, 810-S. URZ

AMI encoding and decoding l Unipolar to bipolar

Bipolar to unipolar

Study of various carrier modulation and demodulation techniques

ASK modulation and demodulation l FSK modulation and demodulation l PSK modulation and demodulation l Study of delta modulation and demodulation l Study of slope overload and increased integrator gain l Study of adaptive delta modulation and demodulation l Study of sigma delta modulation and demodulation l Study of continuously variable slope detector modulation and demodulation, Study of companding system, Voice communication, Study of pulse width modulation and demodulation., Study of pulse position modulation and demodulation ,Switch faults