ETRI Journal最新文献_第2页

Optimal execution of logical Hadamard with low-space overhead in rotated surface code 在旋转曲面代码中以低空间开销优化逻辑哈达玛的执行

IF 1.3 4区计算机科学

ETRI Journal Pub Date : 2024-10-15 DOI: 10.4218/etrij.2024-0129

Sang-Min Lee, Ki-Sung Jin, Soo-Cheol Oh, Jin-Ho On, Gyu-Il Cha

{"title":"Optimal execution of logical Hadamard with low-space overhead in rotated surface code","authors":"Sang-Min Lee, Ki-Sung Jin, Soo-Cheol Oh, Jin-Ho On, Gyu-Il Cha","doi":"10.4218/etrij.2024-0129","DOIUrl":"https://doi.org/10.4218/etrij.2024-0129","url":null,"abstract":"Fault-tolerant quantum computation requires error-correcting codes that enable reliable universal quantum operations. This study introduces a novel approach that executes the logical Hadamard with low-space requirements while preserving the original definition of logical operators within the framework of the rotated surface codes. Our method leverages a boundary deformation method to rotate the logical qubit transformed by transversal Hadamard. Following this, the original encoding of the logical qubit is reinstated through logical flip-and-shift operations. The estimated space–time cost for a logical Hadamard operation with a code distance d is 5d2 + 3d2. The efficiency enhancement of the proposed method is approximately four times greater than those of previous approaches, regardless of the code distance. Unlike the traditional method, implementing a logical Hadamard requires only two patches instead of seven. Furthermore, the proposed method ensures the parallelism of quantum circuits by preventing interferences between adjacent logical data qubits.","PeriodicalId":11901,"journal":{"name":"ETRI Journal","volume":"46 5","pages":"759-773"},"PeriodicalIF":1.3,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.4218/etrij.2024-0129","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142524668","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

Asynchronous interface circuit for nonlinear connectivity in multicore spiking neural networks 多核尖峰神经网络非线性连接的异步接口电路

IF 1.3 4区计算机科学

ETRI Journal Pub Date : 2024-10-12 DOI: 10.4218/etrij.2024-0135

Sung-Eun Kim, Kwang-Il Oh, Taewook Kang, Sukho Lee, Hyuk Kim, Mi-Jeong Park, Jae-Jin Lee

{"title":"Asynchronous interface circuit for nonlinear connectivity in multicore spiking neural networks","authors":"Sung-Eun Kim, Kwang-Il Oh, Taewook Kang, Sukho Lee, Hyuk Kim, Mi-Jeong Park, Jae-Jin Lee","doi":"10.4218/etrij.2024-0135","DOIUrl":"https://doi.org/10.4218/etrij.2024-0135","url":null,"abstract":"To expand the scale of spiking neural networks (SNNs), an interface circuit that supports multiple SNN cores is essential. This circuit should be designed using an asynchronous approach to leverage characteristics of SNNs similar to those of the human brain. However, the absence of a global clock presents timing issues during implementation. Hence, we propose an intermediate latching template to establish asynchronous nonlinear connectivity with multipipeline processing between multiple SNN cores. We design arbitration and distribution blocks in the interface circuit based on the proposed template and fabricate an interface circuit that supports four SNN cores using a full-custom approach in a 28-nm CMOS (complementary metal–oxide–semiconductor) FDSOI (fully depleted silicon on insulator) process. The proposed template can enhance throughput in the interface circuit by up to 53% compared with the conventional asynchronous template. The interface circuit transmits spikes while consuming 1.7 and 3.7 pJ of power, supporting 606 and 59 Mevent/s in intrachip and interchip communications, respectively.","PeriodicalId":11901,"journal":{"name":"ETRI Journal","volume":"46 5","pages":"878-889"},"PeriodicalIF":1.3,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.4218/etrij.2024-0135","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142524645","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

XEM: Tensor accelerator for AB21 supercomputing artificial intelligence processor XEM：用于 AB21 超级计算人工智能处理器的张量加速器

IF 1.3 4区计算机科学

ETRI Journal Pub Date : 2024-10-12 DOI: 10.4218/etrij.2024-0141

Won Jeon, Mi Young Lee, Joo Hyun Lee, Chun-Gi Lyuh

引用次数: 0

Quantum electrodynamical formulation of photochemical acid generation and its implications on optical lithography 光化学酸生成的量子电动力学公式及其对光学光刻技术的影响

IF 1.3 4区计算机科学

ETRI Journal Pub Date : 2024-10-12 DOI: 10.4218/etrij.2024-0127

Seungjin Lee

引用次数: 0

Mixed-mode SNN crossbar array with embedded dummy switch and mid-node pre-charge scheme 采用嵌入式假开关和中节点预充电方案的混合模式 SNN 横杆阵列

IF 1.3 4区计算机科学

ETRI Journal Pub Date : 2024-10-12 DOI: 10.4218/etrij.2024-0120

Kwang-Il Oh, Hyuk Kim, Taewook Kang, Sung-Eun Kim, Jae-Jin Lee, Byung-Do Yang

引用次数: 0

Trends in quantum reinforcement learning: State-of-the-arts and the road ahead 量子强化学习的趋势：艺术现状与未来之路

IF 1.3 4区计算机科学

ETRI Journal Pub Date : 2024-10-03 DOI: 10.4218/etrij.2024-0153

Soohyun Park, Joongheon Kim

引用次数: 0

A compact dual-band bandpass filter based on coupled stub-loaded square ring resonators by using transversal signal-interaction concepts 利用横向信号相互作用的概念，设计了一种基于耦合短桩负载方形环形谐振器的紧凑双带带通滤波器

IF 1.3 4区计算机科学

ETRI Journal Pub Date : 2024-09-30 DOI: 10.4218/etrij.2023-0338

Dong-sheng Xu, Li-tian Wang, Li-rong Qian, Cui-ping Li, Ya-hui Tian, Hong-lang Li, Xuan Chen, Yu-qi Li

{"title":"A compact dual-band bandpass filter based on coupled stub-loaded square ring resonators by using transversal signal-interaction concepts","authors":"Dong-sheng Xu, Li-tian Wang, Li-rong Qian, Cui-ping Li, Ya-hui Tian, Hong-lang Li, Xuan Chen, Yu-qi Li","doi":"10.4218/etrij.2023-0338","DOIUrl":"https://doi.org/10.4218/etrij.2023-0338","url":null,"abstract":"In this paper, a novel dual-band wideband bandpass filter (BPF) based on transversal signal-interaction concepts with a wide upper stopband is proposed and investigated. The designed specification of two passbands can be managed and satisfied based on the independent controllable fractional bandwidth of the two passbands and the centered frequencies. The centered frequencies of dual-band BPF are, respectively, 0.79 GHz (ƒ1) and 1.24 GHz (ƒ2) with 3 dB fraction bandwidths of 26.54% and 11.3%. Two transmission paths consisting of coupled stub-loaded square ring resonators and anti-coupled shorted lines are used to realize signal cancellation of multiple transmission path signal transmission from Port 1 to Port 2. Eleven transmission zeros (TZs) modify harmonic suppression up to 10 ƒ1 with stopband rejection higher than 15 dB. Butterworth lumped notch network and step impedance resonator (SIR) are also utilized to improve the selectivity and harmonic suppression. A compact filter with a circuit size of 0.08λg × 0.08λg is implemented and tested. Good agreement between simulation and measured results verifies the reliability of the designing scheme.","PeriodicalId":11901,"journal":{"name":"ETRI Journal","volume":"46 6","pages":"1113-1124"},"PeriodicalIF":1.3,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.4218/etrij.2023-0338","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142862320","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

LSTM model to predict missing data of dissolved oxygen in land-based aquaculture farm 预测陆基水产养殖场溶解氧缺失数据的 LSTM 模型

IF 1.3 4区计算机科学

ETRI Journal Pub Date : 2024-07-19 DOI: 10.4218/etrij.2023-0337

Sang-Yeon Lee, Deuk-Young Jeong, Jinseo Choi, Seng-Kyoun Jo, Dae-Heon Park, Jun-Gyu Kim

引用次数: 0

Efficient reduction of peak-to-average power ratio in multiple-input multiple-output orthogonal frequency-division multiplexing system by shuffling cluster sequences 通过洗牌簇序列有效降低多输入多输出正交频分复用系统中的峰均功率比

IF 1.3 4区计算机科学

ETRI Journal Pub Date : 2024-06-07 DOI: 10.4218/etrij.2023-0362

Si Sar Mi, Tanairat Mata, Pornpawit Boonsrimuang, Pisit Boonsrimuang

{"title":"Efficient reduction of peak-to-average power ratio in multiple-input multiple-output orthogonal frequency-division multiplexing system by shuffling cluster sequences","authors":"Si Sar Mi, Tanairat Mata, Pornpawit Boonsrimuang, Pisit Boonsrimuang","doi":"10.4218/etrij.2023-0362","DOIUrl":"10.4218/etrij.2023-0362","url":null,"abstract":"We propose a shuffling cluster sequence technique without separate side information (SI) for multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) systems. In the proposed technique, the active subcarriers over two consecutive OFDM symbols are divided into \u0000<math>\u0000 <mn>2</mn>\u0000 <mi>V</mi></math> clusters, and each cluster (packet frame) includes a header for ID#cluster and payload for \u0000<math>\u0000 <mi>D</mi>\u0000 <mi>a</mi>\u0000 <mi>t</mi>\u0000 <mi>a</mi>\u0000 <mi>#</mi>\u0000 <mi>c</mi>\u0000 <mi>l</mi>\u0000 <mi>u</mi>\u0000 <mi>s</mi>\u0000 <mi>t</mi>\u0000 <mi>e</mi>\u0000 <mi>r</mi></math>. The \u0000<math>\u0000 <mn>2</mn>\u0000 <mi>V</mi></math> clusters are shuffled to reduce the peak-to-average power ratio (PAPR) of the time-domain OFDM signal, which includes the information data and SI signals, with a low computational complexity. At the receiver, the information data can be correctly reconstructed by ID#cluster in the header of each cluster, achieving a smaller bit error rate than the conventional MIMO-OFDM system without PAPR reduction. Moreover, our technique is comparable with the conventional partial transmit sequence technique without the impact of a separate SI signal even when increasing the number of transmitter antennas in a nonlinear multipath fading channel.","PeriodicalId":11901,"journal":{"name":"ETRI Journal","volume":"46 6","pages":"998-1006"},"PeriodicalIF":1.3,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.4218/etrij.2023-0362","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141373517","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

Series-arc-fault diagnosis using feature fusion-based deep learning model 利用基于特征融合的深度学习模型进行串联电弧故障诊断

IF 1.3 4区计算机科学

ETRI Journal Pub Date : 2024-06-06 DOI: 10.4218/etrij.2023-0457

Won-Kyu Choi, Se-Han Kim, Ji-Hoon Bae

{"title":"Series-arc-fault diagnosis using feature fusion-based deep learning model","authors":"Won-Kyu Choi, Se-Han Kim, Ji-Hoon Bae","doi":"10.4218/etrij.2023-0457","DOIUrl":"10.4218/etrij.2023-0457","url":null,"abstract":"This paper describes the detection of series arc faults, which constitute the major cause of electrical fires, in a power distribution system. Because the characteristics of series arc faults change considerably depending on the load type, their accurate detection and analysis are difficult. We propose a series-arc-fault detector that uses a transfer learning (TL)-based feature fusion model. The model is trained stagewise for various features in the time and frequency domains using a one-dimensional convolutional neural network combined with a long short-term memory model that uses an attention mechanism to accurately detect arc-fault features. To enhance the reliability of the proposed model, we implement an arc-fault generator compliant with the UL1699 standard and acquire high-quality data that suitably reflect the real environment. Experimental results show that the proposed model achieves an accuracy of 99.99% in classifying series arc faults for five different loads. Hence, a performance improvement of approximately 1.7% in classification accuracy is reached compared with a feature fusion model that does not incorporate TL-based model transfer and the attention mechanism.","PeriodicalId":11901,"journal":{"name":"ETRI Journal","volume":"46 6","pages":"1061-1074"},"PeriodicalIF":1.3,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.4218/etrij.2023-0457","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141378654","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