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← ScienceWhich problem arises because excessive multipath radio signal propagation degrades signal integrity in high-speed wireless communication systems?
A)Frequency spectrum underutilization
B)Increased energy densities aloft
C)Intersymbol interference arises✓
D)Excessive electromagnetic radiation leaked
💡 Explanation
Intersymbol interference increases because reflections create time-delayed and phase-shifted copies of the transmitted signal, causing destructive and constructive signal interference during multipath propagation. Therefore, the receiver incorrectly decodes overlapping symbols, rather than experiencing merely a weakened signal.
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