Question 1 Explain the concept of error function

Question 2 Obtain the Fourier transform for the following

• Single sided exponential signal
• Gate function
• Triangular pulse

Question 3 Explain convolution coding and decoding.

Question 4 Define the following

• Entropy and
• Information rate

Question 5 A code is composed of dot and dashes. If one dash is same as 3 dots in length and has 1/3rd the probability of occurrence

Find

• Information in dot and dash
• Average information in dot -dash code
• If dot lasts for 10 ms and 10 ms is allowed between symbols, find the average rate of information transmission