“…Therefore, we have a total of 6 configurations as summarized in Table I. Reflection coefficients of the walls, ceiling, floor and desk surface are set at 0.8, 0.8, 0.3 and 0.8, respectively [18] [20]. For furniture items, i.e., chair, computer, the reflection coefficient is taken as 0.37 [21] assuming that they are both black colored.…”