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# EC8501 Important Questions Digital Communication Regulation 2017 Anna University

## EC8501 Important Questions Digital Communication

### Sample EC8501 Important Questions Digital Communication

What is entropy and give its mathematical equation.

Define source coding. State the significance of source coding

What is BSC?

Why is Huffman code called as minimum redundancy code?

An event has six possible outcomes with probabilities {1/2, 1/4, 1/8, 1/16, 1/32, 1/32}. Solve for the entropy of the system.

Outline the concept of discrete memoryless source. EC8501 Important Questions Digital Communication

Calculate the amount of information if ????????=1/4.

Identify the properties of entropy

Describe information rate?

Interpret the theory of mutual information

Describe the concept of discrete memoryless channel

List out the properties of Hamming distance. EC8501 Important Questions Digital Communication

Evaluate the Hamming distance between the following code words C1={1,0,0,0,1,1,1} and C2={0,0,0,1,0,1,1}.

State the properties of mutual information

Examine the types of discrete memoryless channel

Give the main idea of Channel Capacity

Summarizeshannon’s law EC8501 Important Questions Digital Communication

Formulate the steps involved in Shannon Fano coding

What is linear predictor? On what basis are predictor coefficients are determined.

Identify the need of prediction filtering.

List the 2 properties of linear prediction.

Summarize the need of Line Codes. EC8501 Important Questions Digital Communication

Why Delta Modulation is superior to Differential Pulse Code Modulation?

Express the data 10011 using the Manchester code format.

Discuss about delta modulation and its limitations.

Demonstrate the techniques to overcome slope overload and granular noise in delta modulation system. EC8501 Important Questions Digital Communication

 Subject name Digital Communication Short Name DC Semester 5 Subject Code EC8501 Regulation 2017 regulation