In order to be able to minimise the energy consumption of an application program, information about the specific energy consumption is required. Modern Nvidia graphics processing units (GPUs) measure their current power consumption and the driver makes the value available to the application every 20 ms. However, for evaluating the energy consumption of GPU kernel functions, such a sampling inte...

We present a new subspace-based direction of arrival (DOA) estimation algorithm for narrow-band sources with high-resolution localization capabilities. The algorithm is based on the invariance property of noise subspace to power of emitters. We speci2cally compare the resolution of the proposed algorithm with the well-known high-resolution multiple signal classi2cation (MUSIC) method. The propo...

In this paper, we address three issues related to the design of opamps for oversampled converters: the theoretical minimum-power bound for an ideal opamp, the best opamp choice in terms of power dissipation, and the best design strategy to reduce power dissipation. To be able to do so, we develop a model that captures the dynamics of the integrator inside the modulator. Based on this model, pow...

In this paper, an ultra low power and low jitter 12bit CMOS digitally controlled oscillator (DCO) design is presented. Based on a ring oscillator implemented with low power Schmitt trigger based inverters. Simulation of the proposed DCO using 32nm CMOS Predictive Transistor Model (PTM) achieves controllable frequency range of 550MHz~830MHz with a wide linearity and high resolution. Monte Carlo ...

This manuscript first revises the performance of total power, Dicke-type and noise-injection microwave radiometers. Equations for the radiometric resolution are revised or derived, and their performance in terms of the radiometric resolution improvement with respect to the ideal total power radiometer resolution is evaluated. It is then shown that the radiometric resolution of noise-injection r...

A central problem in wireless packet networks is the efficient resolution of collisions among nodes with independent transmission schedules. Natural metrics for measuring the efficiency of any collision resolution scheme include total time taken for collision resolution, average participation time of each transmitter during contention resolution, average number of transmissions made by a transm...