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← ScienceWhich behavior results when pulse width modulation of a radio signal exceeds channel capacity?
A)Increased bit error rate✓
B)Reduced carrier frequency drift
C)Improved signal noise immunity
D)Decreased sideband power leakage
💡 Explanation
Increased bit error rate exists because bandwidth limitations cause Inter-Symbol Interference, degrading signal integrity. The Nyquist–Shannon sampling theorem confirms this mechanism. Therefore, the demodulator inaccurately reconstructs bits rather than improving performance, because spectral overlap occurs.
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