A sports broadcaster uses Quadrature Amplitude Modulation (QAM) for encoding a live 4K broadcast. If signal degradation increases the symbol error rate significantly, which consequence follows?

💡 Explanation

Macroblocking becomes visible because increased symbol error rate impairs the demodulation process, causing corrupted data blocks. Therefore, the decoded video exhibits block artifacts, rather than amplifier inefficiencies or improved color; QAM modulation doesn't directly influence bandwidth allocation.

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