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This work describes an approach towards pixel quantization using variable resolution which is made feasible using image transformation in the analog domain. The main aim is to reduce the average bits-per-pixel (BPP) necessary for…

图像与视频处理 · 电气工程与系统科学 2024-10-08 Senorita Deb , Sai Sanjeet , Prabir Kumar Biswas , Bibhu Datta Sahoo

Model quantization is a widely used technique to compress and accelerate deep neural network (DNN) inference. Emergent DNN hardware accelerators begin to support mixed precision (1-8 bits) to further improve the computation efficiency,…

计算机视觉与模式识别 · 计算机科学 2019-04-09 Kuan Wang , Zhijian Liu , Yujun Lin , Ji Lin , Song Han

Analog-to-digital conversion (ADC) is a key bottleneck in scaling DSP-centric receiver architectures to multiGigabit/s speeds. Recent information-theoretic results, obtained under ideal channel conditions (perfect synchronization, no…

信息论 · 计算机科学 2011-12-21 Jaspreet Singh , Upamanyu Madhow

Analog-to-digital converters (ADCs) facilitate the conversion of analog signals into a digital format. While the specific designs and settings of ADCs can vary depending on their applications, it is crucial in many modern applications to…

信号处理 · 电气工程与系统科学 2023-12-19 Satish Mulleti , Timur Zirtiloglu , Arman Tan , Rabia Tugce Yazicigil , Yonina C. Eldar

It is known that the estimated energy consumption of digital-to analog converters (DACs) is around 30\% of the energy consumed by analog-to-digital converters (ADCs) keeping fixed the sampling rate and bit resolution. Assuming that…

信息论 · 计算机科学 2020-02-26 S. B. Pinto , R. C. de Lamare

Target parameter estimation in active sensing, and particularly radar signal processing, is a long-standing problem that has been studied extensively. In this paper, we propose a novel approach for target parameter estimation in cases where…

信号处理 · 电气工程与系统科学 2022-08-10 Aria Ameri , Arindam Bose , Jian Li , Mojtaba Soltanalian

Sparse signals are encountered in a broad range of applications. In order to process these signals using digital hardware, they must be first sampled and quantized using an analog-to-digital convertor (ADC), which typically operates in a…

信息论 · 计算机科学 2020-11-24 Alejandro Cohen , Nir Shlezinger , Salman Salamatian , Yonina C. Eldar , Muriel Médard

Communication systems with low-resolution analog-to-digital-converters (ADCs) can exploit channel state information at the transmitter (CSIT) and receiver. This paper presents initial results on codebook design and performance analysis for…

信息论 · 计算机科学 2015-12-22 Jianhua Mo , Robert W. Heath

One-bit quantization with time-varying sampling thresholds has recently found significant utilization potential in statistical signal processing applications due to its relatively low power consumption and low implementation cost. In…

信号处理 · 电气工程与系统科学 2023-01-10 Arian Eamaz , Farhang Yeganegi , Deanna Needell , Mojtaba Soltanalian

ADCs sit at the interface of the analog and digital worlds and fundamentally determine what information is available in the digital domain for processing. This paper shows that a configurable ADC can be designed for signals with non…

信息论 · 计算机科学 2013-05-14 Arthur J. Redfern , Kun Shi

A low-precision analog-to-digital converter (ADC) is required to implement a frontend device of wideband digital communication systems in order to reduce its power consumption. The goal of this paper is to present a novel joint quantizer…

信息论 · 计算机科学 2018-04-18 Tadashi Wadayama , Satoshi Takabe

The ability to process signals in digital form depends on analog-to-digital converters (ADCs). Traditionally, ADCs are designed to ensure that the digital representation closely matches the analog signal. However, recent studies have shown…

神经与进化计算 · 计算机科学 2024-09-25 Tal Vol , Loai Danial , Nir Shlezinger

This paper considers signal detection in massive multiple-input multiple-output (MIMO) systems with general additive hardware impairments and one-bit quantization. First, we present the quantization-unaware and Bussgang decomposition-based…

信号处理 · 电气工程与系统科学 2020-02-06 Özlem Tugfe Demir , Emil Björnson

Pipelined analog-to-digital converters (ADCs) are fundamental components of various signal processing systems requiring high sampling rates and a high linearity. Over the past years, calibration techniques have been intensively investigated…

信号处理 · 电气工程与系统科学 2022-07-12 Matthias Wagner , Oliver Lang , Thomas Bauernfeind , Mario Huemer

Two-channel modulo analog-to-digital converters (ADCs) enable high-dynamic-range signal sensing at the Nyquist rate per channel, but existing designs quantise both channel outputs independently, incurring redundant bitrate costs. This paper…

信号处理 · 电气工程与系统科学 2026-01-21 Wenyi Yan , Zeyuan Li , Lu Gan , Honqing Liu , Guoquan Li

Transformer-based architectures have become the de-facto standard models for a wide range of Natural Language Processing tasks. However, their memory footprint and high latency are prohibitive for efficient deployment and inference on…

机器学习 · 计算机科学 2021-09-28 Yelysei Bondarenko , Markus Nagel , Tijmen Blankevoort

This paper addresses the design of multi-antenna precoding strategies, considering hardware limitations such as low-resolution digital-to-analog converters (DACs), which necessitate the quantization of transmitted signals. The typical…

信号处理 · 电气工程与系统科学 2025-09-09 Xiuxiu Ma , Abla Kammoun , Mohamed-Slim Alouini , Tareq Y. Al-Naffouri

Traditionally, quantization is designed to minimize the reconstruction error of a data source. When considering downstream classification tasks, other measures of distortion can be of interest; such as the 0-1 classification loss.…

机器学习 · 计算机科学 2021-07-22 Daniel Severo , Elad Domanovitz , Ashish Khisti

Deep neural networks are widely deployed in many fields. Due to the in-situ computation (known as processing in memory) capacity of the Resistive Random Access Memory (ReRAM) crossbar, ReRAM-based accelerator shows potential in accelerating…

硬件体系结构 · 计算机科学 2024-03-11 Chenguang Zhang , Zhihang Yuan , Xingchen Li , Guangyu Sun

In this paper we prove optimality of a certain class of Analog to Digital Converters (ADCs), which can be viewed as generalized Delta-Sigma Modulators (DSMs), with respect to a performance measure that can be characterized as the worst-case…

最优化与控制 · 数学 2012-07-23 Mitra Osqui , Alexandre Megretski