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相关论文: Coupled-Band ESSFM for Low-Complexity DBP

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Backpropagation (BP) is widely used for calculating gradients in deep neural networks (DNNs). Applied often along with stochastic gradient descent (SGD) or its variants, BP is considered as a de-facto choice in a variety of machine learning…

机器学习 · 计算机科学 2024-01-11 Ziang Li , Yiwen Guo , Haodi Liu , Changshui Zhang

The emergence of new wireless technologies together with the requirement of massive connectivity results in several technical issues such as excessive interference, high computational demand for signal processing, and lengthy processing…

信号处理 · 电气工程与系统科学 2021-10-25 Firas Fredj , Yasser Al-Eryani , Setareh Maghsudi , Mohamed Akrout , Ekram Hossain

The novel 3-dimensional modulation format 3D-Simplex offers potentially 1.2 dB higher OSNR tolerance than DP-DPSK while exhibiting the same spectral occupancy, modulating two bits per symbol. We verify this benefit experimen-tally and…

信号处理 · 电气工程与系统科学 2020-09-22 Annika Dochhan , Helmut Grießer , Brian Teipen , Michael Eiselt

With the emergence of new applications (e.g., extended reality and haptics), which require to be simultaneously served not just with low latency and sufficient reliability, but also with high spectral efficiency, future networks (i.e., 6G)…

信号处理 · 电气工程与系统科学 2020-03-06 Jehad M. Hamamreh , Abdulwahab Hajar , Mohamedou Abewa

Reconstruction in limited-angle digital breast tomosynthesis (DBT) suffers from slow convergence of low spatial-frequency components when using weighted data-fidelity terms within primal-dual optimization. We introduce a two-channel…

最优化与控制 · 数学 2026-03-26 Taro Iyadomi , Ricardo Parada , Anna Kim , Lily Jiang , Emil Sidky , William Chang

This paper reports on a novel compact, low-loss bending technique for additively manufactured dielectric image lines between 140 GHz and 220 GHz. Conventional bending approaches require either large curvature radii or technologically…

应用物理 · 物理学 2024-05-02 Leonhard Hahn , Tobias Bader , Christian Carlowitz , Martin Vossiek , Gerald Gold

Probabilistic shaping of quadrature amplitude modulation (QAM) is used to enhance the sensitivity of an optical communication system. Sensitivity gains of 0.43 dB and 0.8 dB are demonstrated in back-to-back experiments by shaping of 16QAM…

信息论 · 计算机科学 2016-01-19 Tobias Fehenberger , Domaniç Lavery , Robert Maher , Alex Alvarado , Polina Bayvel , Norbert Hanik

In this brief, a novel harmonic-backscatter-rectifier (HBR) is introduced for simultaneous rectification and harmonic-based uplink. The proposed (HBR) employs a rectifier to generate both DC power and the harmonic carriers for…

应用物理 · 物理学 2026-01-21 Dan Che , Changjun Liu , Haoming He , Zhi Hua Ren , Pengde Wu

The primary source of nonlinear distortion in wireless transmitters is the power amplifier (PA). Conventional digital predistortion (DPD) schemes use high-order polynomials to accurately approximate and compensate for the nonlinearity of…

信号处理 · 电气工程与系统科学 2018-01-19 Miao Yao , Munawwar Sohul , Randall Nealy , Vuk Marojevic , Jeffrey Reed

An FPGA based digital signal processing (DSP) system for biasing and reading out multiplexed bolometric detectors for mm-wavelength telescopes is presented. This readout system is being deployed for balloon-borne and ground based cosmology…

仪器与探测器 · 物理学 2009-05-13 Matt Dobbs , Eric Bissonnette , Helmuth Spieler

Digital breast tomosynthesis (DBT) is an emerging modality for breast imaging. A typical tomosynthesis image is reconstructed from projection data acquired at a limited number of views over a limited angular range. In general, the…

医学物理 · 物理学 2009-08-19 I. Reiser , J. Bian , R. M. Nishikawa , E. Y. Sidky , X. Pan

Prediction of late reverberation component using multi-channel linear prediction (MCLP) in short-time Fourier transform (STFT) domain is an effective means to enhance reverberant speech. Traditionally, a speech power spectral density (PSD)…

音频与语音处理 · 电气工程与系统科学 2018-12-05 Srikanth Raj Chetupalli , Thippur V. Sreenivas

We demonstrate a polarization-managed 8-dimensional modulation format that is time domain coded to reduce inter-channel nonlinearity. Simulation results show a 2.33 dB improvement in maximum net system margin (NSM) relative to polarization…

We develop an Accelerated Back Pressure (ABP) algorithm using Accelerated Dual Descent (ADD), a distributed approximate Newton-like algorithm that only uses local information. Our construction is based on writing the backpressure algorithm…

最优化与控制 · 数学 2013-02-07 Michael Zargham , Alejandro Ribeiro , Ali Jadbabaie

Microstrip three-way (that is, 4.8 dB) integrated filtering power divider (FPD) is presented in this paper. The proposed FPD evenly distributes an input power signal into three equal output signals. The design incorporates balanced signal…

系统与控制 · 电气工程与系统科学 2024-05-10 Augustine O. Nwajana , Rose Paul

Electron backscatter diffraction (EBSD) has developed over the last few decades into a valuable crystallographic characterisation method for a wide range of sample types. Despite these advances, issues such as the complexity of sample…

图像与视频处理 · 电气工程与系统科学 2024-07-17 Zoë Broad , Alex W. Robinson , Jack Wells , Daniel Nicholls , Amirafshar Moshtaghpour , Angus I. Kirkland , Nigel D. Browning

We study numerical methods for dissipative particle dynamics (DPD), which is a system of stochastic differential equations and a popular stochastic momentum-conserving thermostat for simulating complex hydrodynamic behavior at mesoscales.…

数值分析 · 数学 2021-06-08 Xiaocheng Shang

Two novel detection strategies for nonlinear Fourier transform-based transmission schemes are proposed. We show, through numerical simulations, that both strategies achieve a good performance improvement (up to 3 dB and 5 dB) with respect…

信息论 · 计算机科学 2018-05-08 Stella Civelli , Enrico Forestieri , Marco Secondini

Entanglement across distant frequency bands is a crucial resource in quantum networking. However, directly entangling crossband photons, e.g., microwave and optical, is challenging. Furthermore, distributing crossband entanglement via…

量子物理 · 物理学 2026-04-14 Haowei Shi , Quntao Zhuang

Attribution map visualization has arisen as one of the most effective techniques to understand the underlying inference process of Convolutional Neural Networks. In this task, the goal is to compute an score for each image pixel related…

计算机视觉与模式识别 · 计算机科学 2021-08-31 Adria Ruiz , Antonio Agudo , Francesc Moreno