21. In a GSM system, 8 channels can co-exist in 200 kHz bandwidth using TDMA. A GSM based cellular operator is allocated 5 MHz bandwidth. Assuming a frequency reuse factor of $$\frac{1}{5},$$ i.e. a five-cell repeat pattern, the maximum number of simultaneous channels that can exist in one cell is
22. In decoding of cyclic code, which among the following is also regarded as 'Syndrome Polynomial'?
23. Which among the following error detecting technique is supposed to be parity bit associated with character code?
24. When X and Y are statistically independent, then I (x, y) is
25. Let U and V be two independent and identically distributed random variables such that $$P\left( {U = + 1} \right) = P\left( {U = - 1} \right) = \frac{1}{2}.$$ The entropy H(U + V) in bits is
26. While representing the convolutional code by (n, k, m), what does 'm' signify or represent in it?
27. Which coding terminology deals with the inverse operation of assigned words of second language corresponding to the words in the first language?
28. When probability of error during transmission is 0.5, it indicates that
29. H.261 is
30. Which among the following is/are the essential condition/s for a good error control coding technique?
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