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Introduction To Satellite Communication – 2 – 8

86. While discussing sharing of a communication satellite by many geographically dispersed earth station, DAMA means :

(a) Demand-assigned multiple access
(b) Decibel attenuated microwave antenna
(c) Digital analog master antenna
(d) Dynamically-assigned multiple access

Answer
Answer : (a)

Explanation
No answer description available for this question. Let us discuss.

87. Intermodulation distortion is present in

(a) FDMA
(b) TDMA
(c) CDMA
(d) Both a and b

Answer
Answer : (a)

Explanation
No answer description available for this question. Let us discuss.

88. Name of the multiple access technique in which full bandwidth is used for full time by all users is :

(a) FDMA
(b) CDMA
(c) TDMA
(d) None of these

Answer
Answer : (b)

Explanation
No answer description available for this question. Let us discuss.

89. With reference to transponder capacity utilization in case of TDMA and FDMA techniques :

(a) the capacity utilization is almost 100% irrespective of number of accesses in TDMA
(b) The capacity utilization can never be 100% in FDMA
(c) The capacity utilization is 100% in TDMA for a single access only
(d) None of these

Answer
Answer : (a)

Explanation
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90. Process gain of spread spectrum communication is defined as :

(a) Difference between output and input carrier to noise ratio
(b) The different between output and input signal to noise ratio
(c) The difference between output signal to input carrier noise ratio
(d) None of these

Answer
Answer : (b)

Explanation
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