This dissertation researched on carrier disposition and space vector PWM control method of three-level NPC inverter.

An improvemented triangular carrier stacked modulation algorithm is validated by the simulation software Matlab/Simulink and designed by the advanced TMS320F28335 floating-point DSP based on the asymmetry rule sampling algorithm.

In this paper,based on the characteristics of speech signals,a new stack filtering algorithm was proposed,in which a new stack filter with proper structural elements was de.

An improved algorithm is presented here by applying the main idea of the improved center weighted median filter to the design of the optimal stack filter based on omnidirectional structural elements constrains.

Optimizing stack filters through a clone selection algorithm;

Optimization of stack filters based on mirrored threshold decomposition;

Optimal design of stack filters using an improved clonal selection algorithm;

Algorithm of generating stack filter positive boolean function based on hasse diagram;

Research and analysis of stack filters

On the basis of stack filtering theory, a fast image restoration algorithm is presented based on the threshold and stack properties of stack filter in this paper.

In this paper, the Siemens carrier layering technology to improve customer perception of access GPRS for application of the technology was introduced.