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Hardware implementation aspects of Multi-Step Look-Ahead Σ-Δ modulation-like architectures for all-digital frequency synthesis applications
2015 Edition, April 1, 2015 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

This work discusses hardware implementation considerations for a novel Multi-Step Look-Ahead modulation architecture which improves on the stability and dynamic range of conventional Σ-Δ modulators for...

Single-bit-output all-digital frequency synthesis using multi-step look-ahead bandpass Σ-Δ modulator-like quantization processing
2015 Edition, April 1, 2015 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

A configurable single-bit-output Σ-Δ modulator variant is presented, which improves upon stability and dynamic range. The derivation of the proposed modulation scheme from the Σ-Δ error-feedback structure and its mathematical description are analyzed, while...

Tropical Reservoir Computing Hardware
Volume PP - IEEE - Institute of Electrical and Electronics Engineers, Inc.

In recent years Reservoir Computing has arisen as an emerging machine-learning technique that is highly suitable for time-series processing. Nevertheless, due to the high cost in terms of hardware resources, the implementation of these systems in one single chip...

Hardware Acceleration
2018 Edition, Volume 38, November 1, 2018 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

It is an exciting era for hardware acceleration. Lack of device scaling for general-purpose processors has motivated the need for hardware specialization in virtually every computing system, from mobile processors to desktops to data centers. As a result,...

Leveraging Hardware Caches for Memoization
Volume PP - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Memoization improves performance and saves energy by caching and reusing the outputs of repetitive computations. Prior work has proposed software and hardware memoization techniques, but both have significant drawbacks. Software memoization suffers from high runtime overheads, and is...

Accurate Hardware-Efficient Logarithm Circuit
Volume PP - IEEE - Institute of Electrical and Electronics Engineers, Inc.

This brief presents a hardware-efficient logarithm circuit design based on a novel discontinuous piecewise linear approximation method. Hardware synthesis results targeted for a commercial ASIC cell library and FPGA show the practicality of the proposed design. A...

Hardware-Limited Task-Based Quantization
Volume PP - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Quantization plays a critical role in digital signal processing systems. Quantizers are typically designed to obtain an accurate digital representation of the input signal, operating independently of the system task, and are commonly implemented using serial...

Hardware-Efficient Seizure Detection
2019 Edition, November 1, 2019 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Hardware-efficient classification is essential for applications such as medical implants, wearables, and IoT devices, with severe energy and resources constraints. Here, we propose a hardware-efficient machine learning algorithm based on gradient boosted decision trees....

Toward Hardware-Rooted Smartphone Authentication
Volume PP - IEEE - Institute of Electrical and Electronics Engineers, Inc.

In recent years, an enormous amount of research has been carried out in an attempt to identify smartphones through modeling the manufacturing imperfections of their built-in transducers, which spawned a rich set of hardware fingerprinting methods. However, the vast...

Dynamic Approximation of JPEG Hardware
Volume PP - IEEE - Institute of Electrical and Electronics Engineers, Inc.

JPEG compression based on the discrete cosine transform (DCT) is a key building block in low-power multimedia applications. Approximate computation techniques are used to exploit the error tolerance of JPEG. An image-dependent framework is proposed in this work to design optimized...

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