ETRI Journal最新文献_第10页

Joint user plane function instance and base station scheduling in mobile networks 移动网络中的用户平面功能实例和基站联合调度

IF 1.3 4区计算机科学

ETRI Journal Pub Date : 2023-12-16 DOI: 10.4218/etrij.2023-0336

Seokwon Jang, Namseok Ko, Jaewook Lee, Yeunwoong Kyung, Haneul Ko

引用次数: 0

Dialog-based multi-item recommendation using automatic evaluation 利用自动评估进行基于对话的多项目推荐

IF 1.4 4区计算机科学

ETRI Journal Pub Date : 2023-12-14 DOI: 10.4218/etrij.2022-0333

Euisok Chung, Hyun Woo Kim, Byunghyun Yoo, Ran Han, Jeongmin Yang, Hwa Jeon Song

{"title":"Dialog-based multi-item recommendation using automatic evaluation","authors":"Euisok Chung, Hyun Woo Kim, Byunghyun Yoo, Ran Han, Jeongmin Yang, Hwa Jeon Song","doi":"10.4218/etrij.2022-0333","DOIUrl":"10.4218/etrij.2022-0333","url":null,"abstract":"In this paper, we describe a neural network-based application that recommends multiple items using dialog context input and simultaneously outputs a response sentence. Further, we describe a multi-item recommendation by specifying it as a set of clothing recommendations. For this, a multimodal fusion approach that can process both cloth-related text and images is required. We also examine achieving the requirements of downstream models using a pretrained language model. Moreover, we propose a gate-based multimodal fusion and multiprompt learning based on a pretrained language model. Specifically, we propose an automatic evaluation technique to solve the one-to-many mapping problem of multi-item recommendations. A fashion-domain multimodal dataset based on Koreans is constructed and tested. Various experimental environment settings are verified using an automatic evaluation method. The results show that our proposed method can be used to obtain confidence scores for multi-item recommendation results, which is different from traditional accuracy evaluation.","PeriodicalId":11901,"journal":{"name":"ETRI Journal","volume":"46 2","pages":"277-289"},"PeriodicalIF":1.4,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.4218/etrij.2022-0333","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138716139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Symbol interferometry and companding transform for PAPR reduction of OTFS signal 用于降低 OTFS 信号 PAPR 的符号干涉测量和编解变换

IF 1.3 4区计算机科学

ETRI Journal Pub Date : 2023-12-06 DOI: 10.4218/etrij.2023-0142

Aare Gopal, Desireddy Krishna Reddy, Srinivasarao Chintagunta

{"title":"Symbol interferometry and companding transform for PAPR reduction of OTFS signal","authors":"Aare Gopal, Desireddy Krishna Reddy, Srinivasarao Chintagunta","doi":"10.4218/etrij.2023-0142","DOIUrl":"10.4218/etrij.2023-0142","url":null,"abstract":"This paper presents methods for reducing the peak-to-average power ratio (PAPR) of the orthogonal time frequency space (OTFS) signal. These methods mainly consist of two operations: symbol interferometry (SI) and either \u0000<math>\u0000 <mi>μ</mi></math>-law or \u0000<math>\u0000 <mi>A</mi></math>-law companding. SI spreads the data of one OTFS symbol onto all symbols and is implemented using a simple inverse fast Fourier transform operation on each OTFS symbol. During the second operation, the PAPR of the OTFS signal is significantly reduced. For our performance analysis, the complementary cumulative distribution function, probability density function, and bit error rate are illustrated through simulations performed in MATLAB. The performance is also analyzed using a solid-state power amplifier at the transmitter and compared with OTFS, \u0000<math>\u0000 <mi>μ</mi></math>-law-based OTFS, and SI OTFS systems. The results indicate that the proposed OTFS system achieves a low PAPR.","PeriodicalId":11901,"journal":{"name":"ETRI Journal","volume":"46 4","pages":"595-603"},"PeriodicalIF":1.3,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.4218/etrij.2023-0142","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138561963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On the block error rate performance of cooperative non-orthogonal multiple access short-packet communications with full-duplex relay and partial relay selection 带全双工中继和部分中继选择的合作式非正交多址短报文通信的块误码率性能

IF 1.4 4区计算机科学

ETRI Journal Pub Date : 2023-12-06 DOI: 10.4218/etrij.2023-0125

Ha Duy Hung, Hoang Van Toan, Tran Trung Duy, Le The Dung, Quang Sy Vu

引用次数: 0

Relay-assisted multiuser MIMO-DQSM system for correlated fading channels 相关衰落信道中继辅助多用户MIMO-DQSM系统

IF 1.4 4区计算机科学

ETRI Journal Pub Date : 2023-11-29 DOI: 10.4218/etrij.2022-0391

Francisco R. Castillo-Soria, Carlos Gutierrez, Fermin M. Maciel-Barboza, Viktor I. Rodriguez Abdala, Jayanta Datta

{"title":"Relay-assisted multiuser MIMO-DQSM system for correlated fading channels","authors":"Francisco R. Castillo-Soria, Carlos Gutierrez, Fermin M. Maciel-Barboza, Viktor I. Rodriguez Abdala, Jayanta Datta","doi":"10.4218/etrij.2022-0391","DOIUrl":"10.4218/etrij.2022-0391","url":null,"abstract":"This paper presents the performance evaluation of an amplify-and-forward (AF) relay-assisted multiuser multiple input–multiple output (MU–MIMO) downlink transmission system for correlated fading channels. The overall system performance was improved by incorporating a double-quadrature spatial modulation (DQSM) scheme. The bit error rate (BER) performance and detection complexity of the AF–MU–MIMO–DQSM system were analyzed and compared with those of a conventional AF–MU–MIMO system under the same conditions and parameters. The results showed that the correlated fading channel severely affected the performance of systems with higher spectral efficiency (SE). Considering an SE of 12 bpcu/user, the AF–MU–MIMO–DQSM system yielded a gain of up to 3 dB in BER performance compared with that of its conventional counterpart for the analyzed cases. In terms of detection complexity, the AF–MU–MIMO–DQSM system showed a reduction of up to 56 % compared with that of the conventional system for the optimal maximum likelihood detection criterion.","PeriodicalId":11901,"journal":{"name":"ETRI Journal","volume":"46 2","pages":"184-193"},"PeriodicalIF":1.4,"publicationDate":"2023-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.4218/etrij.2022-0391","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138510287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Direct position tracking method for non-circular signals with distributed passive arrays via first-order approximation 基于一阶逼近的分布式无源阵列非圆信号直接位置跟踪方法

IF 1.4 4区计算机科学

ETRI Journal Pub Date : 2023-11-23 DOI: 10.4218/etrij.2023-0075

Jinke Cao, Xiaofei Zhang, Honghao Hao

引用次数: 0

Numerical analysis of quantization-based optimization 基于量化优化的数值分析

IF 1.4 4区计算机科学

ETRI Journal Pub Date : 2023-11-22 DOI: 10.4218/etrij.2023-0083

Jinwuk Seok, Chang Sik Cho

引用次数: 0

Substrate-integrated-waveguide cavity-backed circularly polarized antenna with enhanced bandwidth and gain 增强带宽和增益的基板集成波导腔背圆极化天线

IF 1.4 4区计算机科学

ETRI Journal Pub Date : 2023-11-22 DOI: 10.4218/etrij.2023-0029

Shankaragouda M. Patil, Rajeshkumar Venkatesan

{"title":"Substrate-integrated-waveguide cavity-backed circularly polarized antenna with enhanced bandwidth and gain","authors":"Shankaragouda M. Patil, Rajeshkumar Venkatesan","doi":"10.4218/etrij.2023-0029","DOIUrl":"10.4218/etrij.2023-0029","url":null,"abstract":"We propose a method for increasing the bandwidth of a substrate-integrated-waveguide (SIW) cavity-backed antenna with taper-based microstrip SIW transition feeding. For radio transmission, a circular slot is etched on top of the SIW cavity. For optimal antenna design, the slot is etched slightly away from the cavity center to generate circularly polarized waves. Simulations show a wide axial ratio bandwidth of 7.860% between 11.02 GHz and 11.806 GHz. Experimental results confirm a similar wide axial ratio bandwidth of 4.9% between 10.8 GHz and 11.35 GHz. An SIW feed from an inductive window excites the radiating circular slot, resulting in a simulated wide impedance range of 1.548 GHz (10.338 GHz–11.886 GHz) and bandwidth of 13.93%. Experimental results show a wide impedance of 2.08 GHz (10.2 GHz–12.08 GHz) and bandwidth of 18.84%. The SIW cavity-backed antenna creates a unidirectional pattern, leading to gains of 6.61 dBi and 7.594 dBi in simulations and experiments, respectively. The proposed antenna was fabricated on a Rogers RT/Duroid 5880 substrate, and the reflection coefficient, radiation patterns, and gains were tested and compared using a computer simulator. The developed broadband antenna seems suitable for X-band applications.","PeriodicalId":11901,"journal":{"name":"ETRI Journal","volume":"46 3","pages":"404-412"},"PeriodicalIF":1.4,"publicationDate":"2023-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.4218/etrij.2023-0029","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138510282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Oriented object detection in satellite images using convolutional neural network based on ResNeXt 基于ResNeXt卷积神经网络的卫星图像定向目标检测

IF 1.4 4区计算机科学

ETRI Journal Pub Date : 2023-11-22 DOI: 10.4218/etrij.2022-0446

Asep Haryono, Grafika Jati, Wisnu Jatmiko

引用次数: 0

10-GHz band 2 × 2 phased-array radio frequency receiver with 8-bit linear phase control and 15-dB gain control range using 65-nm complementary metal–oxide–semiconductor technology 10 GHz 频段 2 × 2 相控阵射频接收器，采用 65 纳米互补金属氧化物半导体技术，具有 8 位线性相位控制和 15 分贝增益控制范围

IF 1.3 4区计算机科学

ETRI Journal Pub Date : 2023-11-07 DOI: 10.4218/etrij.2023-0144

Seon-Ho Han, Bon-Tae Koo

{"title":"10-GHz band 2 × 2 phased-array radio frequency receiver with 8-bit linear phase control and 15-dB gain control range using 65-nm complementary metal–oxide–semiconductor technology","authors":"Seon-Ho Han, Bon-Tae Koo","doi":"10.4218/etrij.2023-0144","DOIUrl":"10.4218/etrij.2023-0144","url":null,"abstract":"We propose a 10-GHz 2 × 2 phased-array radio frequency (RF) receiver with an 8-bit linear phase and 15-dB gain control range using 65-nm complementary metal–oxide–semiconductor technology. An 8 × 8 phased-array receiver module is implemented using 16 2 × 2 RF phased-array integrated circuits. The receiver chip has four single-to-differential low-noise amplifier and gain-controlled phase-shifter (GCPS) channels, four channel combiners, and a 50-Ω driver. Using a novel complementary bias technique in a phase-shifting core circuit and an equivalent resistance-controlled resistor–inductor–capacitor load, the GCPS based on vector–sum structure increases the phase resolution with weighting-factor controllability, enabling the vector–sum phase-shifting circuit to require a low current and small area due to its small 1.2-V supply. The 2 × 2 phased-array RF receiver chip has a power gain of 21 dB per channel and a 5.7-dB maximum single-channel noise-figure gain. The chip shows 8-bit phase states with a 2.39° root mean-square (RMS) phase error and a 0.4-dB RMS gain error with a 15-dB gain control range for a 2.5° RMS phase error over the 10 to10.5-GHz band.","PeriodicalId":11901,"journal":{"name":"ETRI Journal","volume":"46 4","pages":"708-715"},"PeriodicalIF":1.3,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.4218/etrij.2023-0144","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135539690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0