Error Control Coding – Exercise – 1

1. Redundancy in communication system :

(a) Reduces efficiency of communication
(b) Helps to detect errors
(c) Helps to correct errors
(d) All of the above

Answer
Answer : (d)
Explanation
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2. The main purpose of coding is :

(a) To improve the SNR
(b) To improve the bit-error rate
(c) To improve the selectivity
(d) To improve the linearity

Answer
Answer : (b)
Explanation
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3. The hamming code is :

(a) An error detection code system
(b) An error correct code system
(c) An error analyse code system
(d) None of these

Answer
Answer : (b)
Explanation
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4. The …………. is a very popular channel code for error control purpose in cellular phone applications.

(a) CRC Codes
(b) BCH Codes
(c) RS Codes
(d) Constitutional Codes

Answer
Answer : (d)
Explanation
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5. One of the major characteristics of linear block codes and conventional codes is :

(a) both of them have memory
(b) none of them have memory
(c) only linear block codes has memory
(d) only conventional block codes has memory

Answer
Answer : (d)
Explanation
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