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Digital Communication: Error Control Systems
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Digital Communication: Error Control Systems
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25 Questions

1. The k-bit message forms ____ distinct messages which is referred to as k-tuples.
2. The feedback shift register circuit is called as
3. For a (7, 4) block code, 7 is the total number of bits and 4 is the number of
4. Some examples of linear codes
5. Which has comparatively high frequency component?
6. Which operates on continuous stream of data?
7. The _____ of the code-word is the number of non zero elements.
8. A linear code
9. In synchronous transmission, receiver must stay synchronous for
10. In layering, n layers provide service to
11. How error detection and correction is done?
12. Block codes are generated using
13. CRC uses
14. In the dividing circuit, the parity polynomial is obtained by the
15. The rate of a block code is the ration of
16. Extended go-lay code is formed by
17. The received code contains an error if the syndrome vector is
18. Which is more efficient?
19. Which can be used as an intermediate device in between transmitter entity and receiver entity?
20. For decoding in convolution coding, in a code tree,
21. Which needs re-sending of signal?
22. In a standard matrix set code-word there are _______ cosset.
23. The cyclic codes are designed using
24. Which is more complex?
25. Which gets less affected by noise?

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