DCS-A: Advanced Digital Communication Training System

Clock and signal     generation

Sine wave
Fixedfrequency  1 KHz with 0 ~ 2V

Carrier

Synchronizedcarrier of 00 phase
Synchronizedcarrier of 900 phase  
Synchronizedcarrier of 1800 phase
Synchronizedcarrier of 2700 phase

Data pattern

8-Bit,16-Bit and 24-Bit

PRBS generator

16-bitwith switch selectable

Noise

Whitenoise 0 ~ 2V p-p

Transmitter clocks

16KHz,32KHz, 64KHz, 128KHz, 256KHz , 512KHz and 1.024MHz

Output

4digit, 7 segment, LED bank

Input

Three8-bit switch banks for data generation

Transmitter section

Differential encoder
Dibit encoder
Tribitencoder
Scrambler
BPSK,DPSK modulation
QPSKmodulation
QAMmodulation
MSKmodulation
DPCMand ADPCM modulation

Receiver section

Differentialdecoder
Dibit decoder
Tribit decoder
Un-scrambler
BPSK,DPSK demodulation
QPSK demodulation
QAM demodulation
MSK demodulation
DPCM and ADPCM demodulation
Digital PAM
Errorbit adder and inter symbol interference
Low pass Butterworth filters

Study of BPSK modulation and demodulation.

Study of DPSK modulation and demodulation.

Study of dibit data encoder.

Study of QPSK modulation and demodulation.

Study of constellation diagram for QPSK.

Study of tribit data encoder

Study of QAM modulation and demodulation.

Study of constellation diagram for QAM.

Studyof MSK modulation and demodulation

Studyof pulse amplitude modulation of digital data for base band transmission.

Study of transmission and reception of band limited pulse train in base band     transmission system.

Study of eye pattern.

Measurement     of bit error rate using digital data.

Study of message scrambler and un-scrambler.

Study of DPCM modulation and demodulation.

Study of ADPCM modulation and demodulation.

Quantization noise in DPCM.

Bit error rate (BER) measurement.

Study of eye pattern.