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A passband digital communication receiver is to operate with a received energy per-bit-to-noise ratio of 6dB. What is the reduction in bit-errorrate when using 4-QAM modulation rather than 4.ASK? (Express your answer as a ratio of the bit-error-rate of the QAM system compared to that of the ASK system) Question 12 Notes answered Marked out of 1.00 Fas Question a 0.0016 O b. 0.008 O c.0.16 O d. 0.016 O.0.064 A passband digital communication receiver is to operate with a received energy per-bit-to-noise ratio of 6dB. What is the reduction in bit-errorrate when using 4-QAM modulation rather than 4.ASK? (Express your answer as a ratio of the bit-error-rate of the QAM system compared to that of the ASK system) Question 12 Notes answered Marked out of 1.00 Fas Question a 0.0016 O b. 0.008 O c.0.16 O d. 0.016 O.0.064