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Showing posts with label DE Lab. Show all posts
Showing posts with label DE Lab. Show all posts

3/3/15

Digital Communications Laboratory Viva Questions - Part 1




Theory_Questions:

  1. An ASK system transmits data with certain rate and signal is effected by white noise with a one sided spectral density of 10-6 Watts/Hz. the amplitude of the received sinusoidal wave for digit ‘1’ is 500mv and digit ‘0’ is 0v . Determine the bit rate show that the probability of error equal to 10-5. [ Q(x) = 10-5 only when x = 4.25 ]
a) 3.46 Kbps
b) 1.73 Kbps
c) 6.92 Kbps
d) 2.46 Kbps