Advanced Digital Communication Training System - Order Code 40652

• Designed using advanced DDS technology on silicon
• The necessary LED indications are provided to know the status of the experiments
• The system comes with descriptive experimental manual

Clock and signal generation

Sine wave

• Fixed frequency 1KHz with 0 ~ 2V

Carrier

• Synchronized carrier of 00phase
• Synchronized carrier of 900phase
• Synchronized carrier of 1800phase
• Synchronized carrier of 2700phase

Data pattern

• 8-bit, 16-bit and 24-bit

PRBS generator

• 16-bit with switch selectable

Noise

• White noise 0 ~ 2Vpp

Transmitter clocks

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

Output

• 4 digit, 7 segment, LED bank

Input

• Three 8-bit switch banks for data generation

Transmitter section

• Differential encoder
• Dibit encoder
• Tribit encoder
• Scrambler
• BPSK, DPSK modulation
• QPSK modulation
• QAM modulation
• MSK modulation
• DPCM and ADPCM modulation

Receiver section

• Differential decoder
• Dibit decoder
• Tribit decoder
• Unscrambler
• BPSK, DPSK demodulation
• QPSK demodulation
• QAM demodulation
• MSK demodulation
• DPCM and ADPCM demodulation
• Digital PAM
• Error bit adder and inter symbol interference
• Low pass butterworth ?lters

Experiments

• 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
• Study of MSK modulation and demodulation
• Study of 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 unscrambler
• 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

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