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In multiple-input multiple-output (MIMO) spatially multiplexing (SM) systems, achievable error rate performance is determined by signal detection strategy. The optimal maximum-likelihood detection (MLD) that exhaustively examines all symbol…

信息论 · 计算机科学 2015-03-17 Makoto Tanahashi , Hideki Ochiai

Analytic expressions are derived for the Wiener filter (WF), also known as the linear minimum mean square error (LMMSE) estimator, for an intensity-modulation/direct-detection (IM/DD) short-haul fiber-optic communication system. The link is…

信息论 · 计算机科学 2020-08-06 Daniel Plabst , Francisco Javier García Gómez , Thomas Wiegart , Norbert Hanik

Accumulation of molecular data obtained from quantum mechanics (QM) theories such as density functional theory (DFTQM) make it possible for machine learning (ML) to accelerate the discovery of new molecules, drugs, and materials. Models…

化学物理 · 物理学 2020-11-04 Alain B. Tchagang , Ahmed H. Tewfik , Julio J. Valdés

We study the problem of distributed adaptive estimation over networks where nodes cooperate to estimate physical parameters that can vary over both space and time domains. We use a set of basis functions to characterize the space-varying…

系统与控制 · 计算机科学 2015-07-22 Reza Abdolee , Benoit Champagne , Ali H. Sayed

The so-called constrained least mean-square algorithm is one of the most commonly used linear-equality-constrained adaptive filtering algorithms. Its main advantages are adaptability and relative simplicity. In order to gain analytical…

系统与控制 · 计算机科学 2015-02-26 Reza Arablouei , Kutluyıl Doğançay , Stefan Werner

Data-dependent superimposed training (DDST) scheme has shown the potential to achieve high bandwidth efficiency, while encounters symbol misidentification caused by hardware imperfection. To tackle these challenges, a joint model and data…

信号处理 · 电气工程与系统科学 2021-10-29 Chaojin Qing , Lei Dong , Li Wang , Jiafan Wang , Chuan Huang

We present a differentiation framework for plane-wave density-functional theory (DFT) that combines the strengths of forward-mode algorithmic differentiation (AD) and density-functional perturbation theory (DFPT). In the resulting AD-DFPT…

材料科学 · 物理学 2025-12-23 Niklas Frederik Schmitz , Bruno Ploumhans , Michael F. Herbst

Dataset condensation (DC) methods aim to learn a smaller synthesized dataset with informative data records to accelerate the training of machine learning models. Current distribution matching (DM) based DC methods learn a synthesized…

机器学习 · 计算机科学 2024-06-17 Wei Wei , Tom De Schepper , Kevin Mets

The main purpose of this paper is to study the performance of two linear channel estimators for LTE Downlink systems, the Least Square Error (LSE) and the Linear Minimum Mean Square Error (LMMSE). As LTE is a MIMO-OFDM based system, a…

网络与互联网体系结构 · 计算机科学 2011-11-08 Abdelhakim Khlifi , Ridha Bouallegue

Discrete Wavelet Transform (DWT) has been widely explored to enhance the performance of image superresolution (SR). Despite some DWT-based methods improving SR by capturing fine-grained frequency signals, most existing approaches neglect…

计算机视觉与模式识别 · 计算机科学 2025-11-05 Peng Du , Hui Li , Han Xu , Paul Barom Jeon , Dongwook Lee , Daehyun Ji , Ran Yang , Feng Zhu

The requirement of high spectrum efficiency puts forward higher requirements on frame synchronization (FS) in wireless communication systems. Meanwhile, a large number of nonlinear devices or blocks will inevitably cause nonlinear…

信号处理 · 电气工程与系统科学 2021-03-30 Chaojin Qing , Wang Yu , Shuhai Tang , Chuangui Rao , Jiafan Wang

High-throughput approximations of quantum mechanics calculations and combinatorial experiments have been traditionally used to reduce the search space of possible molecules, drugs and materials. However, the interplay of structural and…

量子物理 · 物理学 2019-10-29 Alain Tchagang , Julio Valdés

The generic matrix multiply (GEMM) function is the core element of high-performance linear algebra libraries used in many computationally-demanding digital signal processing (DSP) systems. We propose an acceleration technique for GEMM based…

数学软件 · 计算机科学 2015-05-30 Davide Anastasia , Yiannis Andreopoulos

We derive novel bounds for the performance of algorithms that estimate the downlink covariance matrix from the uplink covariance matrix in frequency division duplex (FDD) massive multiple-input multiple-output (MIMO) systems. The focus is…

信号处理 · 电气工程与系统科学 2018-08-02 Renato Luis Garrido Cavalcante , Lorenzo Miretti , Slawomir Stanczak

We consider transmission of a continuous amplitude source over an L-block Rayleigh fading $M_t \times M_r$ MIMO channel when the channel state information is only available at the receiver. Since the channel is not ergodic, Shannon's…

信息论 · 计算机科学 2007-11-09 Deniz Gunduz , Elza Erkip

SNR margins between partially and fully loaded DWDM systems are estimated without detailed knowledge of the network. The ML model, trained on simulation data, achieves accurate predictions on experimental data with an RMSE of 0.16 dB.

We consider a linear minimum mean squared error (LMMSE) estimation framework with model mismatch where the assumed model order is smaller than that of the underlying linear system which generates the data used in the estimation process. By…

信号处理 · 电气工程与系统科学 2021-05-26 Martin Hellkvist , Ayça Özçelikkale

We consider the problem of joint source-channel coding for transmitting K samples of a complex Gaussian source over T = bK uses of a block-fading multiple input multiple output (MIMO) channel with M transmit and N receive antennas. We…

信息论 · 计算机科学 2016-11-17 Kapil Bhattad , Krishna R. Narayanan , Giuseppe Caire

In this brief paper, we investigate online training of Long Short Term Memory (LSTM) architectures in a distributed network of nodes, where each node employs an LSTM based structure for online regression. In particular, each node…

信号处理 · 电气工程与系统科学 2020-02-25 Tolga Ergen , Suleyman Serdar Kozat

In diffusion-based communication, as for molecular systems, the achievable data rate is low due to the stochastic nature of diffusion which exhibits a severe inter-symbol-interference (ISI). Multiple-Input Multiple-Output (MIMO)…

信息论 · 计算机科学 2019-04-26 S. M. Reza Rouzegar , Umberto Spagnolini