| Summary: | 碩士 === 朝陽科技大學 === 網路與通訊研究所 === 95 === In this thesis, we would like to investigate the connectivity performance of CDMA-based wireless sensor networks (WSN). The deployment variation modeled by 2D Gaussion distribution with zero-mean is applied to the triangular, grid and hexagonal topologies. The length of spreading codes would be studied and designed to perform 3-connectivity performance for the WSN. We evaluate the connection performance with SIR_0,3-con, the minimum requirement of SIR, SIR0 for the 3-connectivity. Simulation results show that the hexagonal topology suffers a degradation of -2.4 dB, when the failure rate from 0 to 0.1 with small variation �箈 =0.05. However, both the triangular and grid topologies show a robust performance of fault tolerance, when the failure rate is increased from 0 to 0.5 with �箈 �T0.1.
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