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Which consequence results when insufficient channel estimation during OFDM demodulation?

A)Increased bit error rate
B)Reduced signal bandwidth
C)Decreased power consumption
D)Improved spectral efficiency

💡 Explanation

Insufficient channel estimation leads to imperfect equalization during demodulation; therefore, inter-carrier interference persists because accurate signal detection is impaired. This channel imperfection increases the bit error rate, rather than improving efficiency with ideal error correction.

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