Error Control Coding – 1 – 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

EXPLANATION

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

EXPLANATION

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

EXPLANATION

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

EXPLANATION

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

EXPLANATION

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