The received signal in a digital base band system is either +A or -A, equally likely, for

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The received signal in a digital base band system is either +A or -A, equally likely, for T-second contiguous intervals. However, the timing is off at the receiver so that the integration starts ΔT seconds late (positive) or early (negative). Assume that the timing error is less than one signaling interval. By assuming a zero threshold and considering two successive intervals [i.e., (+A, +A), (+A, -A), (-A, +A), and (-A, -A)] obtain an expression for the probability of error as a function of ΔT. Show that it is2|ΔΤΙ) 2E, 2E, No No PE


Plot curves of PE versus Eb / N0 in dB for |ΔT|/T = 0, 0.1, 0.2, and 0.3 (four curves). Estimate the degradation in Eb / N0 in dB at PE = 10-4 imposed by timing misalignment.

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