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The author presents an original approach to software prediction based on previous studies conducted under Rome Laboratories' (formerly RADC) contracts. In the model presented, tradeoff analysis is performed on the software architecture, taking into account the future operational use of the software studied. The organization and the amount of effort spent on the development are also discussed. The ...Show More

A Deep Learning Toolbox for Analog Integrated Circuit Placement

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This paper presents a deep learning toolbox, DEEPPLACER, to assist designers during the layout design of analog integrated circuits. DEEPPLACER relies on a simple pair-wise device interaction circuit description, i.e., the circuits’ topological constraints, to propose valid floorplan solutions for block-level structures, including topologies and deep technology nodes not used for its training, at ...Show More

A Deep Learning Toolbox for Analog Integrated Circuit Placement

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Wireless sensor networks (WSNs) are energy- constrained in nature, in this paper, we formulate the problem of data transport in sensor networks as a network utility maximization (NUM) problem, but we argue that each source utility not only depends on its source rate, but also on the consumed energy, this leads to a coupled utility model, where the utilities are functions of source rates and consum...Show More
Business operation downtimes adversely affect not only costs of recovery times and opportunity losses, but also costs of companypsilas reputation and customerspsila confidence. Reliability of power distribution system for data centers depend on numerous of electronic and mechanical components. Redundancy represents a possible approach to enhance system reliability. In a series-parallel design meth...Show More
Capability of robust and adaptive control in dealing with uncertainty is investigated in an information framework. For clarity and technical tractability, a simple first-order linear time-varying system is employed as a vehicle to obtain explicit performance lower bounds of robust and adaptive control. The results indicate that although robust control does not require information on the dynamics o...Show More
This paper describes a new design for a capacitance sensor array to monitor cell viability that uses floating gate compensation techniques to mitigate device mismatch. The measurement is carried out using sensor evaluation modules that employ a charge based capacitance measurement technique to quantify differential capacitance at the sensor pixel elements. Previous results from compensated structu...Show More
The authors explore the inherent tradeoff between latching current density and threshold voltage in a typical lateral insulated-gate bipolar transistor (LIGBT), which uses a shallow implant and long drive-in to form its P-well. The latching performance of LIGBTs in silicon-on-insulator (SOI) substrates is compared to that of equivalent devices in bulk silicon. Two techniques are proposed for impro...Show More

Efficient design of FMT systems

B. Borna;T.N. Davidson

IEEE Transactions on Communications
Year: 2006 | Volume: 54, Issue: 5 | Journal Article |
Cited by: Papers (18)
An efficient channel-independent design method for the prototype filter of a filtered multitone (FMT) transceiver is proposed, along with an iterative power-loading algorithm for FMT. The insight gained from this design is used to choose the number of subchannels in an FMT system.Show More
The performance of wireless sensor network applications is typically a function of the amount of data collected by the individual sensors and delivered to a set of sinks through multi-hop routing within the network. However, the energy-constrained nature of the nodes limits the operational lifetime of the network since energy is dissipated both in sensing and in communicating data across the netwo...Show More
Cloud-based sensor data collection services are becoming an essential part of the Internet of Things (IoT). As the consumer demand grows for these services, the data quality (DQ) of the stream becomes an increasingly vital issue. Of particular interest is the inherent tradeoff between the DQ and the energy consumption of the sensor. Unfortunately, there has been very little research on the managem...Show More
Filtered multitone (FMT) modulation is a filter bank based modulation scheme that is a candidate for the next generation of digital subscriber line (DSL) technology. The high level of spectral containment provided by FMT schemes offers the potential for larger achievable bit rates than more conventional discrete multitone (DMT) schemes in typical DSL environments. In this paper we provide an effec...Show More
Wireless sensor networks (WSNs) are energy- constrained in nature, in this paper, we formulate the problem of data transport in sensor networks as a network utility maximization (NUM) problem, but we argue that each source utility not only depends on its source rate, but also on the consumed energy, this leads to a coupled utility model, where the utilities are functions of source rates and consum...Show More
Software transactional memory (STM) is a promising approach for programming concurrent applications; STM guarantees that a transaction, consisting of a sequence of operations on the memory, appears to execute atomically. In practice, however, it is important to be able to run transactions together with nontransactional legacy code accessing the same memory locations, by supporting privatization of...Show More
A micropower chopper stabilized opamp is presented. The new topology incorporates a switched capacitor filter with synchronous integration inside the continuous time signal path virtually eliminating chopping noise. A three-stage amplifier with multipath nested Miller compensation is modified to incorporate chopping of the input stage, sinc filtering to notch any chopping ripple, and a compensatio...Show More
DC and AC microgrids are key elements to integrate renewable and distributed energy resources as well as distributed energy storage systems. In the last years, efforts toward the standardization of these microgrids have been made. In this sense, this paper present the hierarchical control derived from ISA-95 and electrical dispatching standards to endow smartness and flexibility to microgrids. The...Show More
High power sources and high sensitivity detectors are highly in demand for terahertz imaging and sensing systems. Use of nano-antennas and nano-plasmonic light concentrators in photoconductive terahertz sources and detectors has proven to offer significantly higher terahertz radiation powers and detection sensitivities by enhancing photoconductor quantum efficiency while maintaining its ultrafast ...Show More
A foundation for an integrated approach to the design of controls and diagnostics in reliable control systems is presented. The control module and diagnostic module of the control system are designed together, instead of independently, thereby accounting for the interactions which occur between these two modules in a functioning control system. The four-parameter controller, a generalization of th...
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We demonstrate a novel tunable dispersion compensator that utilizes higher order mode fibers and switchable fiber gratings. The device is broad band and wavelength continuous, yielding a bit rate, bit format, and signal bandwidth as well as channel-spacing transparent adjustable dispersion compensator. The novel device design is free from tradeoffs between tuning range and bandwidth. The tuning ra...Show More
Retarding camshaft timing in an engine equipped with a dual equal camshaft timing phaser reduces the unburned hydrocarbons (HC) and oxides of nitrogen (NO/sub x/) emitted to the exhaust system. Apart from this positive effect to feedgas emissions, camshaft timing can cause large air-to-fuel ratio excursions if not coordinated with the fuel command. Large air-to-fuel ratio excursions can reduce the...Show More
In this paper, a comparison between three different current readouts for micro-potentiostats is presented: resistive transimpedance amplifier (R-TIA), capacitive transimpedance amplifier (C-TIA), and current-mode continuous-time sigma-delta modulator (Current-CTSDM). The comparison is carried out on the signal transfer function, the required amplifier gain-bandwidth (GBW), its input referred noise...Show More
We study how to efficiently diffuse updates to a large distributed system of data replicas, some of which may exhibit arbitrary (Byzantine) failures. We assume that strictly fewer than t replicas fail, and that each update is initially received by at least t correct replicas. The goal is to diffuse each update to all correct replicas while ensuring that correct replicas accept no updates generated...Show More
As more features have been added to mobile devices, it has become necessary to integrate more DC-DC converters into the power-management IC. Consequently, there is a growing need for an area-efficient and simple controller design for DC-DC converters. A simple hysteretic control without any additional component for compensation is a very attractive solution because it is not only cost-effective, b...Show More
This article has provided a brief overview of the SigmaDelta ADC conversion technologies for SDRs. The wireless receiver challenges were identified, the ADC design considerations and SigmaDelta solutions were discussed, and a low-distortion CT BP SigmaDelta modulator architecture was presented. The article has shown that the proposed CT BP SigmaDelta modulator is suitable for implementing high-IF ...Show More
The 20-W class-E power amplifier (PA) described here is electronically tunable from 19 to 31 MHz (ratio 1.67). This PA employs a single RF-power MOSFET and operates from 25 V. The output-tuning network employs fixed inductors and high-voltage MOSFETs for variable capacitors. The PA achieves an efficiency of 61 to 71 percent and has nearly constant output power across the band. It has excellent amp...Show More
The well-known active power-frequency and reactive power-voltage amplitude droop control is widely used in the coordinative control of parallel inverters in microgrids. However, this conventional droop method may cause frequency and voltage deviation, which affects the accuracy of power supply. This paper proposes a novel secondary control strategy to compensate this deviation. This strategy mimic...Show More