Digital Communication Questions and Answers, Set 45

Digital Communication Questions and Answers

Q1. 

Greater the redundancy greater will be the error correcting capability.

Answer :  

True

Q2. 

The method used for representing convolution encoder are

Answer :  

1. Connection pictorial

2. State diagram

3. Tree diagram

Q3. 

Example for convolution encoder state diagram is

Answer :  

Tree & Trellis diagram

Q4. 

Soft decision decoding requires

Answer :  

More memory

Q5. 

The cyclic codes are designed using

Answer :  

Shift registers with feedback

Q6. 

Block codes are generated using

Answer : 

Generator matrix

Q7. 

The k-bit message forms ____ distinct messages which is referred to as k-tuples.

Answer :  

2k

Q8. The _____ of the code-word is the number of non zero elements.

Answer :  

Weight

Q9. 

Error detecting capability is given as

Answer :  

Dmin -1

Q10.

Some various types of distortion are

Answer :  

1. Jitter

2. Noise

3. Aperture error

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