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The concept of space mapping is applied, for the first time, to the design of microwave dispersive delay structures (DDSs). DDSs are components providing specified group delay versus frequency responses for real-time radio systems. The DDSs…

光学 · 物理学 2013-11-11 Qingfeng Zhang , John W. Bandler , Christophe Caloz

Digital backpropagation (DBP) is one of the most effective techniques for compensating nonlinear distortions in coherent optical fiber communication systems. However, its practical application to wideband transmission remains limited by…

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

One of the challenges often faced with wireless communication systems is its limited range and data-rate. Distributed Transmit Beamforming (DTB) techniques are being developed to address these two issues to provide reliable connectivity…

信号处理 · 电气工程与系统科学 2018-07-18 Ismail Shakeel , Ishtiaq Ahmad , Hajime Suzuki

Dynamic Time Division Duplexing (D-TDD) allows cells to accommodate asymmetric traffic variations with high resource assignment flexibility. However, this feature is limited by two additional types of interference between cells in opposite…

网络与互联网体系结构 · 计算机科学 2020-01-31 Jalal Rachad , Ridha Nasri , Laurent Decreusefond

We study federated machine learning at the wireless network edge, where limited power wireless devices, each with its own dataset, build a joint model with the help of a remote parameter server (PS). We consider a bandwidth-limited fading…

信息论 · 计算机科学 2020-02-12 Mohammad Mohammadi Amiri , Deniz Gunduz

Differential Privacy (DP) is a widely adopted technique, valued for its effectiveness in protecting the privacy of task-specific datasets, making it a critical tool for large language models. However, its effectiveness in Multimodal Large…

密码学与安全 · 计算机科学 2025-06-10 Qianshan Wei , Jiaqi Li , Zihan You , Yi Zhan , Kecen Li , Jialin Wu , Xinfeng Li Hengjun Liu , Yi Yu , Bin Cao , Yiwen Xu , Yang Liu , Guilin Qi

Scaling multi-dimensional transformers to long sequences is indispensable across various domains. However, the challenges of large memory requirements and slow speeds of such sequences necessitate sequence parallelism. All existing…

分布式、并行与集群计算 · 计算机科学 2025-05-13 Xuanlei Zhao , Shenggan Cheng , Chang Chen , Zangwei Zheng , Ziming Liu , Zheming Yang , Yang You

The pseudo-analog wireless video transmission technology can improve the effectiveness, reliability, and robustness of the conventional digital system in video broadcast scenarios. Although some prototypes of IEEE 802.11 series have been…

信号处理 · 电气工程与系统科学 2020-07-22 Xiao-Wei Tang , Xin-Lin Huang

Non-linear transceivers and non-reciprocity of downlink and uplink channels are two major challenges in the deployment of massive multiple-input-multiple-output (MIMO) systems. We consider an over-the-air (OTA) approach for digital…

信号处理 · 电气工程与系统科学 2025-08-26 Ashkan Sheikhi , Ove Edfors , Juan Vidal Alegría

As a key enabling technology for 5G wireless, millimeter wave (mmWave) communication motivates the utilization of large-scale antenna arrays for achieving highly directional beamforming. However, the high cost and power consumption of RF…

信息论 · 计算机科学 2018-07-04 Qingjiang Shi , Mingyi Hong

Radiation-induced photocurrent in semiconductor devices can be simulated using complex physics-based models, which are accurate, but computationally expensive. This presents a challenge for implementing device characteristics in high-level…

计算物理 · 物理学 2020-08-31 Joshua Hanson , Pavel Bochev , Biliana Paskaleva

Recent research has focused on designing neural samplers that amortize the process of sampling from unnormalized densities. However, despite significant advancements, they still fall short of the state-of-the-art MCMC approach, Parallel…

In this article, we address the challenges of transmitter-receiver isolation in \emph{mobile full-duplex devices}, building on shared-antenna based transceiver architecture. Firstly, self-adaptive analog RF cancellation circuitry is…

Recent achievement in self-interference cancellation algorithms enables potential application of full-duplex (FD) in 5G radio access systems. The exponential growth of data traffic in 5G can be supported by having more spectrum and higher…

信号处理 · 电气工程与系统科学 2019-03-26 Jingwen Bai , Shu-ping Yeh , Feng Xue , Yang-seok Choi , Ping Wang , Shilpa Talwar

Mesoscopic numerical simulations provide a unique approach for the quantification of the chemical influences on red blood cell functionalities. The transport Dissipative Particles Dynamics (tDPD) method can lead to such effective multiscale…

计算物理 · 物理学 2017-06-07 Ansel L. Blumers , Yu-Hang Tang , Zhen Li , Xuejin Li , George E. Karniadakis

In this paper, we provide a novel framework for efficient digital predistortion (DPD) based linearization of active antenna arrays with multiple and mutually different nonlinear power amplifiers. The proposed method builds on the use of a…

信号处理 · 电气工程与系统科学 2019-07-19 Alberto Brihuega , Mahmoud Abdelaziz , Matias Turunen , Thomas Eriksson , Lauri Anttila , Mikko Valkama

The explosive growth of global data traffic demands scalable and energy-efficient optical communication systems. Spatial division multiplexing (SDM) using multicore or multimode fibers is a promising solution to overcome the capacity limit…

Dedispersion, the removal of deleterious smearing of impulsive signals by the interstellar matter, is one of the most intensive processing steps in any radio survey for pulsars and fast transients. We here present a study of the…

天体物理仪器与方法 · 物理学 2016-01-07 Alessio Sclocco , Joeri van Leeuwen , Henri E. Bal , Rob V. van Nieuwpoort

Compared to the error diffusion, dot diffusion provides an additional pixel-level parallelism for digital halftoning. However, even though its periodic and blocking artifacts had been eased by previous works, it was still far from…

多媒体 · 计算机科学 2015-10-28 Yun-Fu Liu , Jing-Ming Guo