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Problem 1
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Problem 2
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Problem 3
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Problem 4
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Problem 5
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Problem 6
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Problem 7
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The observation vector x has two elements x1 and x2 that are defined by
Define new Gaussian random variable Y whose sample vlaue y is equal to the difference between x1 and x2, Thus we have
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Suppose we know symbol 0 was transmitted, so
Since the condition x1>x2, y>0, corresponds to the receiver making a decision in favor of 1, we deduce that the conditional probability of error, so
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So p10 is equal to The average probability of bit error is (assuming equiprobable symbols)
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Problem 8
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