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In this paper, we propose the concept of "channel+ beam" hando2642 (CBH) in cognitive radio networks (CRNs) with multi-beam smart antennas (MBSAs). We address the multi-class spectrum hando2642 issue, based on the user priority, by using the mixed Preemptive/Non-Preemptive M/G/1 queueing model with discretion rule. The discretion rule sets the threshold for the preemption of the low-priority...
Fault ride capability in doubly fed induction generators (DFIG) poses three main objectives; (i) the gradual rise of voltage after the fault is cleared in compliance with the grid codes,(ii) limiting rotor inrush current and (iii) limiting DC link overvoltage. This paper proposes a new scheme using dynamic voltage restorer (DVR) and supplementary rotor controller (SRC) to enhance the fault ride through...
In present paper, a non-cascading converter is presented. It is very useful as far as overall efficiency of the converter is concerned. Here the input power is transferred to the load through a non-cascading scheme employed on the secondary side of an isolation transformer. It requires the intermediate capacitor of lower ratings and at the same time improves the power transfer capability of the converter...
Nowadays, modification and hybridization of the Custom Power Device (CPD) topology are occurring massively to provide the better power quality service in the distribution system. The selection of a suitable adaptive control algorithm for such CPD is also a tough job for the researchers due to the complexity of the power system. In this paper, the Sparse Least Mean Square (SLMS)control algorithm is...
In this paper, we propose a mixed preemptive and non-preemptive resume priority (PRP/NPRP) M/G/1 queueing model for the modeling of the traffic in Cognitive Radio (CR) Networks with prioritized transmissions. A traffic-adaptive spectrum handoff scheme is then developed based on the proposed queueing model for delay sensitive applications. This spectrum handoff scheme reduces the delivery time of the...
Optimum Power gating sleep transistor design and implementation are critical to a successful low-power design. The large magnitude of supply and ground bounces, which arise from power mode transitions in large power gating structures results in wrong functioning of the circuit. We propose a novel power gating technique showing the trade-off between wake-up time and supply noise. This technique is...
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