Digital 16-QAM with example constellation points. --- Quadrature amplitude modulation (QAM) is the name of a family of digital modulation methods and a related family of analog modulation methods widely used in modern telecommunications to transmit information. It conveys two analog message signals, or two digital bit streams, by changing (modulating) the amplitudes of two carrier waves, using the amplitude-shift keying (ASK) digital modulation scheme or amplitude modulation (AM) analog modulati
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Digital 16-QAM with example constellation points. --- Quadratur…
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8.31 Consider the octal signal point constellations in Figure P-8.31.1. The nearest neighbor signal points in the 8-QAM signal constellation are separated in distance by A units. Determine the radii a and b of the inner and outer circles.2. The adjacent signal points in the 8-PSK are separated by a distance of A units. Determine the radius r of the circle.3. Determine the average transmitter powers for the two signal constellations, and compare the two powers. What is the relative power advantag
8.31 Consider the octal signal point constellations in Figure P-8.31.1. T…
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