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Practice over 1000+ GATE-level questions from this topic!

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Q#1 Information Theory and Error Control coding GATE EC 2004 MCQ +2 marks -0.66 marks

Consider a binary digital communication system with equally likely 0’s and 1’s. When binary 0 is transmitted the voltage at the detector input can lie between the level s-0.25V and +0.25V with equal probability: when binary 1 is transmitted, the voltage at the detector can have any value between 0 and 1 V with equal probability. If the detector has a threshold of 2.0V (i.e., if the received signal is greater than 0.2 V, the bit is taken as 1), the average bit error probability is        

0.15

0.2

0.05

0.5

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