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14.12 Write down the expression for signals in an M-ary modulation scheme where M = 8...

14.12 Write down the expression for signals in an M-ary modulation scheme where M = 8 and it encodes information in four different phases (0, π 2 , π and 3π 2 ) and two amplitudes A and 2A. Draw the constellation. Please show steps and the steps for the constellation so I can understand. Thanks

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