Which outcome occurs in orthogonal frequency-division multiplexing (OFDM) systems when timing synchronization degrades?

💡 Explanation

Increased inter-carrier interference (ICI) arises because loss of timing synchronization disrupts the orthogonality of the subcarriers. This causes adjacent subcarriers to interfere rather than remaining distinct. Therefore, ICI increases rather than decreasing bit error rates without processing, improving channel estimation, or reducing peak power.

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