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Brain-machine-brain interfaces dedicated for sensing and treatment applications are emerging technologies for studying the neural activity underlying various pathologies, understanding neurons interactions, detecting mind-driven decisions, locating onset seizures, and for addressing dysfunctions by both microstimulation and drug delivery. This talk covers signal processing algorithms used for onset...
More and more technology knobs are needed for enablement of advanced devices. This makes it difficult to assess their design impact by means of basic L-scaling rules. Thus new technologies now require a concurrent product-technology targeting. We examined the impact of the three most promising next-node device technologies — bulk planar (BPL), ultra thin body SOI (UTB), and bulk FinFET (BFF) on the...
The development of sustainable and durable ultra-low-power SoC calls for flexibility integration in the design flow. Reconfigurable logic circumvents the intrinsic low speed performances of software processing in microcontrollers but FPGA fabrics to be embedded suffer from a high power overhead compared to dedicated ASICs. We show that, by combining a power-oriented implementation using multi-VT,...
This paper presents a design of ternary magnitude comparator based on the CNFET (Carbon Nanotube Field Effect Transistor) ternary logic gates. Ternary logic is a promising alternative to conventional logic design because of its energy efficiency. This energy efficiency is achieved due to the reduced circuit overhead for ternary logic when compared to the conventional binary logic. The comparator design...
A new reconfigurable charge pump topology with tunable conversion ratio is proposed. Analysis of this charge pump shows that it is very suitable for solar energy harvesting. Based on the proposed charge pump, a solar energy harvesting system, which delivers optimum harvesting efficiency, is designed. Both the conversion ratio and the switching frequency of the charge pump are tuned to search for the...
The leakage energy consumption is substantial and increasing for multiprocessor systems. That is why embedded operating systems adapt power management decisions to the variable characteristics of cores, improving system-wide power consumption and performance. Low power operating systems use key techniques such as Dynamic Voltage Frequency Scaling (DVFS) to save the energy consumption by changing dynamically...
Due to continuous evolution of Systems-on-Chip (SoC), the complexity of their design and development has augmented exponentially. To deal with the ever-growing complexity of such embedded systems, we introduce, in this paper, an object-oriented approach to rapid SoC design using auto-generation of hardware custom instructions to simplify and accelerate the SoC design process. In our approach, a Data...
In this paper a method to estimate the leakage power consumption of CMOS digital circuits taking into account input states and process variations is proposed. The statistical leakage estimation is based on a pre characterization of library cells considering correlations (ρ) between cells leakages. A method to create cells leakage correlation matrix is introduced. The maximum relative error achieved...
Based on common RFID technology the University of Applied Sciences Offenburg is developing a new bio-telemetrical system called μTrans. Semi-passive RF transponders implanted in small animals measure ECG, pressure, temperature, oxygen saturation and activity. Using modern cloud technology, it is possible to build up a sensor network of a nearly unlimited size.
In this paper we present novel high speed and ultra low voltage domino invererters. The delay of the inverters are less than 4% of the delay for a standard CMOS inverter. A low power inverter is included and the simulated data for supply voltages in the range of 200mV to 400mV are provoded. Monte carlo simulation show that the ULV logic styles are less influenced by process mismatches than standard...
It is predicted that ICT technologies will contribute significantly to the reduction of the worldwide energy consumption and carbon emission. Predictions about energy consumption in 2050 show that nearly 100% renewable energy is possible. ICT devices themselves can be much more energy efficient. However, their significant role will be in areas like transportation, agriculture, lighting, home control...
Ultra-low voltage digital circuit is an active research area that tailors portable applications. Such applications include wearable electronics, intelligent remote sensors, implantable medical devices, and energy-harvesting systems. Two major goals of such systems are minimized energy consumption and improved compatibility with low-voltage power supplies and analog components. The immediate solution...
In this paper we present a novel CMOS pass transistor logic style for ultra low-voltage and high speed digital applications. The circuits presented offer more than 90% delay reduction compared to conventional CMOS for supply voltages less than 400mV. Differential AND and NAND pass transistor gates presented and compared to complementary pass transistor logic CPL. Simulated data obtained by the H spice...
Low power SoCs comprising MPUs and SRAMs are becoming increasingly important for high-speed PCs, mobile and medical equipment. The most effective and straightforward way for low power is to reduce the operating voltage VDD. For memory-rich high-speed SoCs, however, the reduction has been extremely difficult with device scaling due to the ever-larger subthreshold leakage and variability. For the LSI...
In this paper, a new recursive multibit recoding multiplication algorithm is introduced. It provides a general space-time partitioning of the multiplication problem that not only enables a drastic reduction of the number of partial products (N/r), but also eliminates the need of pre-computing odd multiples of the multiplicand in higher radix (r≥3) multiplication. Based on a mathematical proof that...
Communication and knowledge are changing the world. At the same time they challenge universities whose conventional model shows limits. The request of different forms of knowledge and different types of knowledge workers direct the future of universities.
This paper focuses on the implementation of a DVFS based Dynamic Stretch to Fit power strategy on a ARM based platform. The actual execution time (AET) of tasks within an application, implemented on a processor is always less or equal to the worst execution time (WCET). The time slack produced by AET and WCET of one task can be utilized by the other tasks for their execution. We take advantage of...
A new charge pump analysis method is proposed by modeling the fly capacitors using a matrix. Due to its regularity, it is implemented as a CAD tool to analyze any topology in ANTZ tree and NANTZ tree. Analytical results on the conversion ratio and the efficiency obtained by the proposed method are shown to be very close to HSPICE simulated results with errors less than 0.01% and 0.7%, respectively...
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