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Which processing bottleneck during OFDM demodulation increases with channel dispersion?

A)Excessive cyclic prefix corruption
B)Computational equalization complexity
C)Subcarrier frequency synchronization drift
D)Insufficient FFT resolution margin

💡 Explanation

Increased channel dispersion causes longer impulse responses, therefore requiring more complex equalization because the adaptive filtering must model the channel more accurately, rather than simple scalar correction of subcarriers during demodulation.

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