Aeu-International Journal of Electronics and Communications最新文献_第8页

Custom RISC-V architecture incorporating memristive in-memory computing 定制 RISC-V 架构结合了内存计算技术

IF 3 3区计算机科学

Aeu-International Journal of Electronics and Communications Pub Date : 2024-09-07 DOI: 10.1016/j.aeue.2024.155505

Konstantinos Alexandros Mallios , Ioannis Tompris , Athanasios Passias , Vasileios Ntinas , Iosif-Angelos Fyrigos , Georgios Ch. Sirakoulis

{"title":"Custom RISC-V architecture incorporating memristive in-memory computing","authors":"Konstantinos Alexandros Mallios , Ioannis Tompris , Athanasios Passias , Vasileios Ntinas , Iosif-Angelos Fyrigos , Georgios Ch. Sirakoulis","doi":"10.1016/j.aeue.2024.155505","DOIUrl":"10.1016/j.aeue.2024.155505","url":null,"abstract":"<div><p>Due to the rise in data-intensive applications, the von Neumann bottleneck is increasingly restricting modern computer architectures, resulting to latency and energy consumption. Addressing this challenge necessitates a CMOS-compatible solution with high energy efficiency and significant parallelism. Utilizing resistive switching components within a 1T1R crossbar array and the application of Stanford RRAM model, this paper suggests an original method for in-memory computing. Moreover, this work shows a new way to advance the popular RISC-V architecture by including memristive crossbar array. It does this by adding a custom instruction set, special hardware blocks, and the Scouting Logic Scheme. These modifications serve both as a comprehensive testbed for the memory system and a proof of concept for the future integration of memristors in computing architectures. The proposed design undergoes extensive testing and power analysis to validate its functionality and performance under various conditions. The results demonstrate significant improvements in computational efficiency and energy savings, highlighting the potential of memristor-based in-memory computing systems to overcome current architectural limitations.</p></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"187 ","pages":"Article 155505"},"PeriodicalIF":3.0,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142173772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design of radiation-tolerant digital-to-analog converter and investigation on analog single event transient effects 设计耐辐射数模转换器并研究模拟单事件瞬态效应

IF 3 3区计算机科学

Aeu-International Journal of Electronics and Communications Pub Date : 2024-09-06 DOI: 10.1016/j.aeue.2024.155503

Aishwarya Harneer Suresh, Corrado Carta, Gunter Fischer

引用次数: 0

Compact series-fed microstrip patch array antenna in the 60 GHz band 60 千兆赫频段的紧凑型串联馈电微带贴片阵列天线

IF 3 3区计算机科学

Aeu-International Journal of Electronics and Communications Pub Date : 2024-09-06 DOI: 10.1016/j.aeue.2024.155513

Jisu Lee , Seungyong Park , Junmo Choi , Woocheon Park , Kyung-Young Jung

{"title":"Compact series-fed microstrip patch array antenna in the 60 GHz band","authors":"Jisu Lee , Seungyong Park , Junmo Choi , Woocheon Park , Kyung-Young Jung","doi":"10.1016/j.aeue.2024.155513","DOIUrl":"10.1016/j.aeue.2024.155513","url":null,"abstract":"<div><p>Despite the inherent transmission-range limitations of 60 GHz band, it has applications in a wide variety of fields, notably in rear occupant alert (ROA) systems for monitoring vehicle occupants in rear seats. In-vehicle monitoring radar systems commonly utilize microstrip patch antennas for transmitting and receiving electromagnetic waves, which generally suffer from limited bandwidth. Although various techniques such as stub matching and single and multi-section quarter-wave transformers can be employed to widen the bandwidth of a microstrip patch antenna, they lead to an overall increase in the antenna size. This study proposes a compact 3 × 1 series-fed patch array antenna designed for operation in 60 GHz band. The proposed compact antenna achieves impedance matching by employing a symmetrical inset structure on both the top and bottom of the patches, with different patch sizes and interelement spacings. The overall antenna dimensions, using the RO4830 substrate (ε<sub>r</sub> = 3.23, tan <em>δ</em> = 0.0033), are 1.41 mm × 7.04 mm × 0.125 mm. The impedance bandwidth ranges from 60.95 to 66.73 GHz, and the maximum realized gain is 10.24 dBi at 62.5 GHz. The half-power beam-widths (HPBWs) are 33.96 degrees in the E-plane and 76.19 degrees in the H-plane at 62.5 GHz.</p></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"187 ","pages":"Article 155513"},"PeriodicalIF":3.0,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142168035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Resource optimization for cooperative SWIPT-NOMA systems with imperfect SIC 具有不完善 SIC 的 SWIPT-NOMA 合作系统的资源优化

IF 3 3区计算机科学

Aeu-International Journal of Electronics and Communications Pub Date : 2024-09-06 DOI: 10.1016/j.aeue.2024.155517

Sunkaraboina Sreenu, Kalpana Naidu

{"title":"Resource optimization for cooperative SWIPT-NOMA systems with imperfect SIC","authors":"Sunkaraboina Sreenu, Kalpana Naidu","doi":"10.1016/j.aeue.2024.155517","DOIUrl":"10.1016/j.aeue.2024.155517","url":null,"abstract":"<div><p>This paper investigates a cooperative non-orthogonal multiple access (NOMA) system designed for multiple users. It integrates simultaneous wireless information and power transfer (SWIPT) while accounting for the imperfections in successive interference cancellation (SIC). In this scenario, a nearby user functions as a relay for a more distant user. Through the utilization of a power splitting (PS) protocol, the nearby user adeptly manages both energy harvesting and decoding signals from users. A user pairing strategy is employed, aiming to guarantee a significant contrast in channel gains between users within each pair. Subsequently, the power allocation coefficients and PS factor for each cluster are derived to optimize the performance of nearby users and amplify the overall system throughput. This optimization takes into account the individual target rates of each user while accommodating the presence of imperfect SIC. Numerical results affirm the enhanced performance of the nearby user, showcasing greater system throughput and minimal outage probability compared to existing schemes, even in the presence of imperfect SIC.</p></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"187 ","pages":"Article 155517"},"PeriodicalIF":3.0,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142168036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Encoding reality with semantic interpretation in metaverse interactions 在元宇宙互动中用语义解释对现实进行编码

IF 3 3区计算机科学

Aeu-International Journal of Electronics and Communications Pub Date : 2024-09-05 DOI: 10.1016/j.aeue.2024.155512

Hanh T.M. Tran , Hieu V. Nguyen , Van-Phuc Bui , Tien Ngoc Ha , Van Tho Nguyen , Duc-Hien Nguyen , Mai T.P. Le

{"title":"Encoding reality with semantic interpretation in metaverse interactions","authors":"Hanh T.M. Tran , Hieu V. Nguyen , Van-Phuc Bui , Tien Ngoc Ha , Van Tho Nguyen , Duc-Hien Nguyen , Mai T.P. Le","doi":"10.1016/j.aeue.2024.155512","DOIUrl":"10.1016/j.aeue.2024.155512","url":null,"abstract":"<div><p>In the rapidly evolving landscape of the metaverse, efficiently managing and processing vast amounts of data is a critical challenge. This paper introduces a novel data management framework designed specifically for the metaverse, addressing the complexities of handling extensive data in its increasingly intricate and expansive digital environments. Leveraging advancements in wireless communication technologies, our framework optimizes resource allocation while managing massive data loads. We propose an innovative approach that integrates change grading and semantic encoding techniques, utilizing edge computing to process data locally and reduce server load. By processing data locally and minimizing server load, our approach stores static scenes on local devices and detects significant changes by comparing them with newly captured data. This selective transmission of only new or altered information based on change grades dramatically reduces bandwidth requirements and boosts network efficiency. This paper details the technical aspects of our methodology, showcases experimental results that demonstrate its effectiveness, and discusses its implications for the future scalability and sustainability of metaverse architectures. Our framework aims to refine the real-time digital representation of the metaverse, ensuring its operational efficiency and continuous accessibility as it evolves.</p></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"187 ","pages":"Article 155512"},"PeriodicalIF":3.0,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142151046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing 5G performance: A standalone system platform with customizable features 增强 5G 性能：具有可定制功能的独立系统平台

IF 3 3区计算机科学

Aeu-International Journal of Electronics and Communications Pub Date : 2024-09-05 DOI: 10.1016/j.aeue.2024.155515

Emmanouil-Zafeirios G. Bozis , Nikos C. Sagias , Michael C. Batistatos , Michail-Alexandros Kourtis , George K. Xilouris , Anastasios Kourtis

{"title":"Enhancing 5G performance: A standalone system platform with customizable features","authors":"Emmanouil-Zafeirios G. Bozis , Nikos C. Sagias , Michael C. Batistatos , Michail-Alexandros Kourtis , George K. Xilouris , Anastasios Kourtis","doi":"10.1016/j.aeue.2024.155515","DOIUrl":"10.1016/j.aeue.2024.155515","url":null,"abstract":"<div><p>The fifth generation (5G) mobile networks have introduced new features compared to the previous generation that resulted in increased overall throughput and decreased latency. At the same time, the complexity of 5G-based standards and deployment scenarios is increasing. This further drives the development of software for testing new ideas and different 5G and Beyond-5G use cases in academia and industry. In this paper we propose a flexible end-to-end (E2E) standalone 5G system platform based on the Open Air Interface software, which is fully reprogrammable and customizable. We created a set of Linux shell scripts, which improves the ease of use of the software, speeding up the process of implementing different connectivity scenarios. We present the main capabilities of the platform and the achievable throughput and latency for different bandwidth parts. Setting the DL/UL Transmission periodicity to 2 ms, we measured a latency of 6.78 ms for the mean RTT value, which is acceptable for many applications requiring low latency.</p></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"187 ","pages":"Article 155515"},"PeriodicalIF":3.0,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1434841124004011/pdfft?md5=e5a8aca5bbf548cea933d333d4b3b146&pid=1-s2.0-S1434841124004011-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142161865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Analysis and design of symmetrical coupled Doherty power amplifier with extended high-efficiency range 具有扩展高效率范围的对称耦合 Doherty 功率放大器的分析与设计

IF 3 3区计算机科学

Aeu-International Journal of Electronics and Communications Pub Date : 2024-09-05 DOI: 10.1016/j.aeue.2024.155509

Yi Zhang, Ruibin Gao, Shuang Liu, Yujie Han, Meng Ren, Hanhui Lin, Jingzhou Pang

{"title":"Analysis and design of symmetrical coupled Doherty power amplifier with extended high-efficiency range","authors":"Yi Zhang, Ruibin Gao, Shuang Liu, Yujie Han, Meng Ren, Hanhui Lin, Jingzhou Pang","doi":"10.1016/j.aeue.2024.155509","DOIUrl":"10.1016/j.aeue.2024.155509","url":null,"abstract":"<div><p>This paper presents a novel Doherty power amplifier (DPA) structure that employs two equal-cell transistors with an extended high-efficiency range. It is illustrated that the DPA high-efficiency range can be extended by employing a novel coupler-based network through introducing different impedance at the isolation port, which can improve the back-off range. The corresponding theoretical architecture of the proposed coupled DPA is constructed with design parameters. The load modulation effect with different circuit parameters are also analyzed, and DPA performance in different back-off range can be obtained. To validate the proposed architecture, a symmetrical coupled DPA with a high-efficiency range of around 9 dB is designed at 2 GHz. Under the continuous-wave(CW) signal, the fabricated DPA achieves saturated output power of 44.2 dBm and saturated drain efficiency (DE) of 65%. At 8.5 dB back-off, DE of 51.2% can be obtained with a gain of 14 dB. When driven by a 20 MHz Long Term Evolution (LTE) signal with 8 dB peak to average power ratio (PAPR), the measured adjacent channel power ratio (ACPR) keeps better than −20 dBc without linearization. The measurement results well conform to the theoretical analysis and simulation results.</p></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"187 ","pages":"Article 155509"},"PeriodicalIF":3.0,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142151047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Broadband equal-cell Doherty power amplifier with extended back-off range based on asymmetrical voltage and nonlinear current profiles 基于非对称电压和非线性电流曲线的宽带等容 Doherty 功率放大器，具有更宽的关断范围

IF 3 3区计算机科学

Aeu-International Journal of Electronics and Communications Pub Date : 2024-09-05 DOI: 10.1016/j.aeue.2024.155511

Yu Li , Weimin Shi , Ke Liu , Decheng Gan , Zhijiang Dai , Jingzhou Pang , Mingyu Li

{"title":"Broadband equal-cell Doherty power amplifier with extended back-off range based on asymmetrical voltage and nonlinear current profiles","authors":"Yu Li , Weimin Shi , Ke Liu , Decheng Gan , Zhijiang Dai , Jingzhou Pang , Mingyu Li","doi":"10.1016/j.aeue.2024.155511","DOIUrl":"10.1016/j.aeue.2024.155511","url":null,"abstract":"<div><p>This paper proposes a generalized design methodology for extending the bandwidth and output back-off range of an equal-cell Doherty power amplifier (EC-DPA). The parameters of the EC-DPA combiner are derived based on pre-defined asymmetrical voltage and nonlinear current profiles. It is illustrated that the design parameters of the EC-DPA can be expressed as a function of the combining load. Then, the combining load can be optimized to extend the bandwidth of the proposed EC-DPA. As a validation, an 1.4–2.1 GHz EC-DPA with extended output back-off range is implemented in this paper. Under a continuous-wave (CW) signal excitation, the fabricated EC-DPA achieves a maximum output power of 42.6–43.8 dBm, a saturation drain efficiency (DE) of 50.2%–70.2% and a 10 dB back-off DE of 45.2%–53.7% over 1.4–2.1 GHz. Moreover, under the excitation of a 20 MHz modulated signal with a peak-to-average power ratio (PAPR) of 8.0 dB, the measured adjacent channel leakage ratios (ACLRs) of the fabricated EC-DPA changes from −36.2 dBc to −25.5 dBc at the lower band and from −34.6 to −23.8 dBc at the upper band over 1.4–2.1 GHz when the average output power is 35.0 dBm.</p></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"187 ","pages":"Article 155511"},"PeriodicalIF":3.0,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142151045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamics of a two-neuron hopfield neural network: Memristive synapse and autapses and impact of fractional order 双神经元跳场神经网络的动力学：膜突触和自突触以及分数阶的影响

IF 3 3区计算机科学

Aeu-International Journal of Electronics and Communications Pub Date : 2024-09-02 DOI: 10.1016/j.aeue.2024.155506

Balamurali Ramakrishnan , Zhen Wang , Hayder Natiq , Nikhil Pal , Karthikeyan Rajagopal , Sajad Jafari

引用次数: 0

Highly sensitive dual-functional all-dielectric biosensor for hemoglobin and cancer detection 用于检测血红蛋白和癌症的高灵敏度双功能全介电生物传感器

IF 3 3区计算机科学

Aeu-International Journal of Electronics and Communications Pub Date : 2024-09-02 DOI: 10.1016/j.aeue.2024.155504

K.B.S. Sri Nagini , Chandu D.S. , Ping Jack Soh , S.S. Karthikeyan

{"title":"Highly sensitive dual-functional all-dielectric biosensor for hemoglobin and cancer detection","authors":"K.B.S. Sri Nagini , Chandu D.S. , Ping Jack Soh , S.S. Karthikeyan","doi":"10.1016/j.aeue.2024.155504","DOIUrl":"10.1016/j.aeue.2024.155504","url":null,"abstract":"<div><p>This paper is the first demonstration of a dual-functional metasurface (DFM) based on all-dielectric materials for biosensing applications. The proposed biosensor possesses a unique capability to switch between polarization conversion and absorber functionalities owing to the phase changing properties of VO<sub>2</sub>. Accordingly, the sensor works in two modes: a highly sensitive reflective cross-polarization converter mode (4.38 - 5.08 THz) and an absorber mode (4.36 - 5.96 THz), both of which hold significant promise for the detection of hemoglobin and cancer cells, respectively. When VO<sub>2</sub> is in the insulating state, the reflective cross-polarization converter function of this biosensor exhibits exceptional sensitivity of 3.08 THz/RIU for hemoglobin detection. This is the highest sensitivity among the existing THz based biosensors. Likewise, the same biosensor transforms into an absorber when VO<sub>2</sub> is in the conducting state, offering an impressive sensitivity of 2.93 THz/RIU for detection of cancerous cells. The all-dielectric based DFM biosensor also provides a high degree of angular stability, providing stable response for incident angles of up to 60° for both its polarization converter and absorber functions.</p></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"187 ","pages":"Article 155504"},"PeriodicalIF":3.0,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142151044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0