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Mobile-broadband traffic has experienced a large increase and the network has continuously expanded over the past few years. Pico cells are envisioned to cope with such a demand of capacity in network environments. Since those small cells are low-cost nodes, a thorough deployment is not typically performed, particularly in LTE-A Het Nets. As a result, the matching between traffic demand and network...
Power gating is one of most effective ways to suppress the leakage power in CMOS digital circuits. In this paper, we propose a new method to estimate the maximum instantaneous current (MIC), and derive an analytical model for the MIC of the clusters in distributed sleep transistor network (DSTN) power-gated circuits. Based on this MIC estimation model, we perform ST sizing in DSTN power-gated circuits...
Multi-stage reconnection electromagnetic launcher is not a simple addition of some single-stage launching systems, there is a stage coupling between each driving coils. In this paper, the mathematical models of single and multi-stage reconnection electromagnetic launchers are described in detail, and the inter-stage coupling at different velocities is discussed respectively. The inter-stage coupling...
As permanent magnet synchronous motor (PMSM) has the characteristics of high power density, high efficiency, and high torque current units, so it is extensively used in electric vehicles driving. Energy management unit (EMU) in hybrid electric vehicle (HEV) demands for good motor driving and energy regeneration capability. Based on the mathematical model of PMSM, this paper presents the PMSM vector...
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