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The problem of base station (BS) planning for TD-LTE network is studied in this paper. This method takes various factors into consideration according to the public attitude. The public attitude plays an important role in the process of BS planning. We choose the area where the network performance is the worst to build BS, according to public attitude, Monte Carlo method and least cost path analysis...
This paper applies empirical mode decomposition (EMD) combined with translation invariant (TI) scale-adaptive soft-hard compromise threshold method to achieve seismic random noise reduction. Commonly, the Gibbs phenomenon produced by wavelet transform is derived from the basis function which leads to artifacts in discontinuities. TI is a method which could suppress Gibbs artifacts efficiently and...
In this paper we discuss the complex carry system after the extension of the real carry system. We focus on the relationship between the decimal set of the complex carry system and fractal and its general speculation.
Metal clipping issue was observed in semiconductor manufacturing, which will result in the electronic property failure of metal line. The process parameters of HDP FSG deposition were investigated in order to discover the mechanism of metal clipping. The results indicated that ion bombardment effect is the dominated factor for metal clipping, it also accelerate the chemical etch of F ions. According...
In this paper, development and application of a direct chemical mechanical polishing (CMP) process for shallow trench isolation (STI) on 200mm wafers using high selectivity ceria-based slurry has been studied for production. Post thickness of silicon nitride and trench oxide showed that new direct CMP process has good within-die range and excellent within-wafer uniformity. Improved planarity and less...
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