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As to the high Peak-to-average ratio (PAR) of Space Time Block Coding Multicarrier Code Division Multiple Access (STBC MC-CDMA) systems, a simplified advantage Active Constellation Extension (ACE) and Particle Swam Optimization (PSO) algorithm is proposed. The algorithm first according to the baseband physical model of STBC MC-CDMA system, signal structure and matrix, the signal peak to average ratio...
As the search efficiency is not high and it's difficult to find user's interested information, this paper proposes the combination of ant colony algorithm and ontology to create search engine. By the clear formal specification of body shared concept, the search engine has intelligent search features, and then it can use ontology to provide users' interested search results. In the process of ontology's...
According to the distribution network with wind power formulated offline island plan and implementation with online island search. In the formulation of offline island plan only to ensure that important load power supply, alternative power supply path; when online search according to the real-time output power of wind turbines , under the premise of the power constraints, with the new online search...
To save energy, solar vehicle have come into being. Therefore, the study of photovoltaic maximum power point tracking is necessary. Traditional photovoltaic maximum power point tracking (MPPT) algorithm such as constant voltage algorithm can not track the maximum power point quickly and accurately. Operation voltage can not be adjusted rapidly with environmental changes when using conductance adding...
This paper presents a new method of mining weighted association rules, which can hold the “weighted downward closed property” by using an improved model of weighted support measurements in the weighted setting. Compared to some generalized weighted association rules mining, it proves that the method can quickly and efficiently mine important association rules.
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