Multiple choice

A four-phase and an eight-phase signal constellation are shown in the figure below.

For the constraint that the minimum distance between pairs of signal points be d for both constellations, the radii r1, and r2 of the circles are

  1. r1 = 0.707d, r2 = 2.782d

  2. r1 = 0.707d, r2 = 1.932d

  3. r1 = 0.707d, r2 = 1.545d

  4. r1 = 0.707d, r2 = 1.307d

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation