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← Language & CommunicationA deep space probe transmits telemetry using 64-QAM. What happens to the information throughput when sporadic solar flares increase background noise substantially?
A)Throughput remains unchanged, FEC
B)Throughput decreases, error correction increases✓
C)Throughput increases, FEC weakens
D)Throughput halves, bandwidth doubles
💡 Explanation
Increased noise degrades the signal-to-noise ratio; therefore, error correction coding (ECC) must increase its overhead, reducing the effective information throughput because a larger portion of the signal is used for error detection/correction rather than raw data. This occurs rather than maintaining throughput, which is impossible given the noise increase.
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