A 5-point method is
used to approximate the tangent vectors and the positions of the extra control
points on the vector as in [26].
4.3 Simulation and Experimental Results
The algorithm starts by using the Computer Aided Design (CAD) tool and
selecting the checkpoints. The CAD tool has been designed to accept node
positions from a file or by individual input from the expert. Once a source node
and destination node have been specified, the power is dynamically assigned
to the nodes. The assumption is that the source node spent a large portion
of its energy communicating with its neighbors before deciding to transmit
to the destination. The source node and its neighbors should be relatively
low on power but the power available to the nodes should increase as the
distance from the source increases. In the CAD tool, the power is displayed
as a color gradient from a low power color to a high power color. This color
377
N0.3
N1.3 N2.3
N3.3
N4.3 N5.3
N6.3
0
1
0 1
4
1
2
3
4
Fernand S. Cohen, Joshua Goldberg, and Jaudelice C. de Oliveira
Fig. 4. (a) A B-Spline generated using the data points as control points.(b) A
B-Spline interpolated from the data points. Extra Control points are shown.
arrangement is configurable. The data points are entered by mouse clicks and
the corresponding B-Spline is shown when the expert is done entering data
points. When the simulation is run, the search windows are shown and if
a path can be completed to the destination, a solid line is drawn.
Pages:
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604