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A DRAM with multiple-refresh-period (MRP) method is one of effective refresh power reduction techniques. To support the MRP method, effective test methods for classifying the refresh period of each DRAM block are needed. In this paper, we propose an effective test method for classifying the refresh periods of DRAM blocks. Also, a programmable built-in self-test (BIST) scheme being able to support...
According to the requirements of IEC61850-9-2LE, digital energy metering devices mainly adopt 80×fr fixed sampling rate. When the harmonic analysis is carried out under asynchronous sampling, it will produce large errors due to spectral leakage. Quasi-Synchronous Algorithm has high accuracy, but the calculation process is complicated and the hardware overheads are high. Based on the characteristics...
Roof segmentation, i.e. separating building roofs, is a key step in deriving building models as it directly influences the precision and accuracy of the final building models. Even though various segmentation methods have been proposed, convincing and completing evaluations of the segmentation results are rarely discussed. This paper proposes several approaches to provide quantitative evaluation of...
Nodes location is a key technology in the research of Wireless Senor Network (WSN), in which the location method that is based on RSSI ranging and Least-Square is the current hot spot in research and application. Currently, with the tendency of more and more applications of WSN in the three-dimensional environment, the LSSVR three-dimensional WSN nodes location algorithm based on RSSI is proposed,...
The wireless sensor network node localization algorithms are studied more and more at present, but most are based on two-dimensional localization algorithm for three-dimensional localization of too few. Based on the researches on the classic two-dimensional localization algorithm, and the trilateration was extended to three-dimensional localization algorithm. Error analysis of this algorithm was revealed...
For better synchronization performance we have previously proposed a cross-coupling gengeralized predictive controller for motion systems [1]. In this paper the problem formulation is extended to a general case. Also, as the fact that the proposed algorithm is derived in the the framework of input-ouput transfer function does not lead itself easily to an analysis of the closed loop stability, one...
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