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A large population of thermostatically controlled loads (TCLs) can be coordinated to provide various ancillary services to the grid. Effective operation and coordination of TCLs requires an accurate and simple model to capture their aggregate power flexibility. One appealing approach is the virtual battery method, which models the aggregate flexibility offered by a collection of TCLs as a simple scalar...
As the power density of modern processors keeps increasing, thermal management remains a challenging problem for processor designers. Among various solutions, closed-loop automatic thermal controllers have the benefits of fast response speed and high control accuracy. However, as a processor is a discrete system by nature, controllers designed by classic control theories fail to consider the system...
Elliptic Curve Cryptography (ECC) is becoming widely deployed in embedded cryptographic devices because of the reduced number of key bits. However, the side-channel attacks especially simple side-channel analysis (SPA) can obtain secret keys by measuring power consumption. To resist this attack there appear a number of countermeasures such as Montgomery ladder and double-and-add-always algorithm....
In the dark silicon era, a fundamental problem is: given a real-time computation demand represented by a set of independent applications with their own power consumption, how to determine if an on-chip multiprocessor system is able to respond to this demand and maintain its reliability by keeping every core within the safe temperature range. In this paper, we first present a novel thermal model for...
3D-NoC emerges as a potential multi-core architecture delivering high performance, high energy efficiency and great scalability. However, severe thermal challenges due to high power density continue to be a major hurdle in the development of 3D-NoC. In this paper, we propose a novel thermal-aware task scheduling scheme named Bottom-to-Top (B2T) approach to address this challenge. Incorporating communication...
Multiply-accumulator (MAC) is the central unit used in digital signal processors (DSP) that are now widely found in many consumer electronic devices. With current emphasis on minimizing operating power and yet maximizing computation performance for DSPs, efficient MAC architecture with low power consumption and high computation performance is hence desired. This paper proposes a low power pipelined...
This paper aims to develop a hierarchical framework for demand-side frequency control. The framework involves two decision layers. The top layer determines a control gain for the aggregated load response on each bus using robust decentralized control theory. The second layer involves a large number of devices, which switch probabilistically during contingencies so that the aggregated power change...
Large scale data centers and Plug-in Electric Vehicles (PEVs) are valuable assets that can be used to balance power grid frequency by adjusting their power consumption. This paper considers the joint power management of a data center and the PEVs of its employees for frequency regulation. The problem involves designing a real-time power control strategy for the integrated assets to collectively track...
Frequency regulation is a major market service to reduce the undesired imbalance between power supply and demand in the power market. In order to participate in the regulation market, both the supply and demand sides need to be capable of flexibly adjusting their power generation and consumption, respectively. As the scale of Internet data centers is increasing rapidly, their significant power consumption...
Reed-Solomon (RS) codes are one of the most widely used block error-correcting codes in modern communication and computer systems. Multiplication is the key computation in RS encoding. Adopting the generator polynomial with symmetric coefficients, the number of multipliers in RS encoders can be reduced by half, and their power consumption may also reduce. However, in some cases, the encoder based...
Cloud computing aims at reducing energy consumption and maximizing resource efficiency without violating service level agreement (SLA). To address these important issues, this study proposes an energy-efficient resource provisioning technology with SLA consideration for virtual machine scheduling. According to SLAs, the resource manager could consolidate virtual machines onto the physical machine...
Organic Light Emitting Diode (OLED) has emerged as the new generation display technique for mobile multimedia devices. Compared to existing technologies OLEDs are thinner, brighter, lighter, and cheaper. However, OLED panels are still the biggest contributor to the total power consumption of mobile devices. In this work, we proposed a fine-grained dynamic voltage scaling (FDVS) technique to reduce...
This paper presents an 8 × 8 DRAM array fabricated using an aerosol jet printer to demonstrate the feasibility of gain-cell DRAMs in a p-type-only organic thin film transistor (OTFT) technology. This printing method can accommodate functional inks with a variety of viscosities and has a patterning precision of 10 μm. The underlying design philosophy was to implement a general purpose memory array...
In Wireless Sensor Networks (WSN) the sensor nodes are usually battery-powered, for which the energy consumption must be minimized in order to extend their working time. The energy consumption of RF front-ends is dominant in the whole communication system, so we must consider how to minimize it in the design. In this paper, we describe four kinds of RF front-end architectures, energy model of each...
An LC injection locked frequency divider (ILFD) in CMOS technology is designed. By adopting the direct injection of signal into the resonation tank, the locking range of the ILFD is improved. For the purpose of reducing the power consumption, the complimentary topology is adopted in this work and also the voltage swing of the ILFD is optimized. The simulation results indicate that the ILFD has a wide...
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