... 0.0754 (20 ,20 ,20 ) 6.953 0. 020 9 (21 ,21 ,21 ) 6.8 72 0.0093 (22 ,22 ,22 ) 7.049 0.0 025 (23 ,23 ,23 ) 6. 922 0.0007 (24 ,24 ,24 ) 6.584 3.9E-005 (25 ,25 ,25 ) 6.080 2. 7E-005(16,19 ,25 ) 5.590 0.0009(15 ,20 ,25 ) 5.634 ... −1M∑j=1| xR,j−xk,j| 2 . (23 )196 Advanced Radio Frequency Identification Design and Applications estimation error of (16,19 ,25 ) case with respect to (25 ,25 ,25 ) is about 8%. Moreover, it ... cases with powers under 23 dBm. The improvement of position 20 2 Advanced Radio Frequency Identification Design and Applications pseudo table of the tag positions. Choi et al. (20 08) augmented the...