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    QPSK in the ATSC System

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    The ATSC broadcast television system used in the U.S. transmits video signals at an average rate of 18.34 Mbps and employs 8-VSB modulation. QPSK modulation would allow receivers to achieve the same BER as 8-VSB at a lower CNR, increasing the range of the broadcast transmitters. Why isn't QPSK used in the ATSC system?

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    Please see the attached. I think we only need basic math here and ...

    Solution Summary

    The solution discusses QPSK in the ATSC system.