digital communications questions for mid examination

1.companding explain briefly ,a law and u law companding techniques
2.pulse code modulation transmitter and receiver,show that differential pulse code modulation receiver is in the part of transmitter
3.signal to band width in pulse code modulation and obtain signal to quantization noise ratio of the pulse code modulation
4.principle of operation of binary phase shift keying generation and reception of binary phase shift keying and calculate band width


1.sampling theorem for low pass signal with equations
2.explain blocks of pulse code modulation  and also mention the advantages and disadvantages of pulse code modulation
3.signal to quantization noise ratio of delta modulation  and differences between granular noise and slow power noise (granular noise is also called as widenoise)
4.differential phase shift keying  generation and demodulation
 binary phase shift keying generation and demodulation



all of you prepare well for the examination

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