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?© BrainMass Inc. brainmass.com October 10, 2019, 4:01 am ad1c9bdddf
Please see the attached. I think we only need basic math here and ...
The solution discusses QPSK in the ATSC system.