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Erschienen in:
2007 | OriginalPaper | Buchkapitel
Fault Tolerance of Connectivity Performance in CDMA-Based Wireless Sensor Networks
verfasst von : Yung-Fa Huang, Ching-Mu Chen, Tsair-Rong Chen, Jong-Shin Chen, John Sum
Erschienen in: Frontiers of High Performance Computing and Networking ISPA 2007 Workshops
Verlag: Springer Berlin Heidelberg
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In this paper, we investigate the fault tolerance of connectivity probability for CDMA-based wireless sensor networks with variations of nodes deployment. The variations of deployment are modeled by 2D Gaussian distribution with zero-mean for the triangle, grid and hexagon topologies. Thus, the
k
-connectivity performance is studied through the outage probability of CDMA signal links. We evaluate the connectivity performance with
SIR
0,3 −
con
, the minimum requirement of SIR,
SIR
0
for the 3-connectivity, when the nodes suffer a failure rate
P
f
. Simulation results show that the hexagonal and grid topologies suffer a degradation of -2.4 and -0.5 dB, respectively, when the failure rate
P
f
equals 0.1. However, the triangular topology shows robust fault tolerance with the failure rate
P
f
below 0.5 and moderate variations of deployment.