Over the past few years, diffusion models have emerged as novel AI solutions, generating diverse multi-modal outputs from text prompts. Despite their capabilities, they face challenges in computing, such excessive latency and energy consumption due to iterative architecture. Although prior works specialized transformer acceleration can be applied, nature of remains unresolved. In this paper, we present EXION, first SW-HW co-designed accelerator that solves computation by exploiting unique...

Localization has been extensively studied owing to its huge potential in various areas, such as Internet of Things, 5G, and unmanned aerial vehicle services. Its wide applications include home automation, advanced production control. In this study, we propose a novel localization method that utilizes convolutional neural network (CNN) ultra-wideband (UWB) signals. A problem is converted regression with the proposed CNN, which ranging positioning phases are integrated. By integrating phases,...

This paper proposes a vision-based unmanned aerial vehicle (UAV) chasing system that can be embedded in pursuer UAV (pUAV) to protect the attack from an evader (eUAV). The proposed consists of two parts, i.e., tracking and control signal generation parts. Combining deep learning-based object detector, <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">you only look once</i> version three (YOLOv3), existing trackers, algorithm improve performance...

This paper demonstrates the implementation of a space–frequency line coded-orthogonal frequency-division multiplexing (SFLC-OFDM) system. The SFLC-OFDM system utilizes downlink channel state information at transmitter, which can be obtained from uplink estimation under reciprocity assumption between uplink-and-downlink channels. However, in practical implementations, is violated due to imperfect synchronization and radio frequency chain mismatch transceivers. To recover reciprocity,...

Ball-milling process was applied to increase sulfur content in sulfur/polyacrylonitrile (SPAN) composites and improve electrochemical properties of Li/S batteries. In contrast as-received PAN, pre-heated PAN pulverized by the ball-milling, resulting continuous size reduction with increasing milling time. Sulfur contents SPAN synthesized a milled were increased prolonging time maximum reached 44.5% for 10 h. cells electrodes delivered first discharge capacities 1356, 1409, 1512, 1610...

Polyacrylonitrile (PAN)/Si composite fibers (electrodes) with flexibility were fabricated using an elec-trospinning method and then Si-embedded carbon (Si/C) prepared by carbonizing the at 800, 900, 1000°C. Si particles distributed in interior exterior of entangled PAN fibers. After carbonization, structure electrodes was preserved but diameter decreased owing to release component elements constituting such as nitrogen oxygen. Crystalline existed both amorphous crystalline phases. As...

The Talbot effect is a near-field phenomenon of coherent wave transmitted through grating to form self-images at distances integer multiples the so-called length. However, long distances, higher-order diffraction waves fail converge and spatial walk-off aberration occurs. Here, we describe scheme for measuring optical including aberration. Our approach utilizes quantum dot fluorescent film as tomographic means probe intensity patterns. Since itself based on interference, it with conventional...

In wideband communication systems, the Doppler shift of radio signal should be modeled as a frequency-varying quantity, not constant. Accordingly, we studied effect (FV-DS) on orthogonal time-frequency space (OTFS) systems. From analysis, it is shown that FV-DS generates bandwidth proportional interferences across delay domain. Furthermore, simulation results verified bit-error-rate performance OTFS systems degraded due to FV-DS-induced interferences. Based this study, concluded an...

In this paper, we introduce a localization method that employs the ultra-wideband (UWB) technology and convolutional neural network (CNN). The CNN model is designed to estimate location of device which transmits UWB signals three different receiver antennas under an indoor environment. proposed uses red, green, blue (RGB) image generated from received signals. transmitter directly estimated RGB through without predicting distance between each transmitter. simulation results show our...

In this work, bare Sn and carbon-coated nanoparticles were prepared by a pulsed wire evaporation process. The effect of binder pressing ratio on electrochemical properties Sn/C composite electrodes was investigated to enhance the structural stability anode. electrode containing polyamide-imide (PAI) with high tensile strength (52 MPa) exhibited higher coulombic efficiency better cycle performance compared conventional polyvinylidene fluoride (PVdF) binder. 5%-pressed proper porosity in...

In this study, we examine eight different object trackers for UAV chasing. The chasing algorithm employs version three of you only look once (YOLOv3) and the considered tracker. Following an tracking benchmark, success rate, precision, complexity were compared. From numerical results, it was shown that proposed with a tracker achieves improved performance less computational complexity.

본 연구는 공간 다이버시티 이득을 얻는 시공간 선 부호화 시스템을 위한 CFO·STO·SCO 추정 및 보상 기법을 제안한다. 송신단은 상향링크와 하향링크 채널 사이 대칭성을 가정하고 추정한 상향링크 정보로 인코딩을 수행한다. 하지만, CFO·STO·SCO로 인한 비대칭성 발생으로, STLC 한 경우, 통신에 있어 확보할 수 없다. 이에 연구에서는 CFO·STO를 효과적으로 보상하는 이중 기법과 SCO 잔여 위상 오차에 대한 추가 제시한다. 또한, 소프트웨어 모뎀 기반 SISO 시스템 테스트베드를 구축하여 제안하는 통해 대칭성이 확보됨을 실험적으로 검증한다.