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IEEE Annual Conference on Wireless and Microwave Technology (WAMICON)

作者： Kefayet Ullah Satheesh Bojja Venkatakrishnan John L. Volakis Department of Electrical and Computer Engineering Florida International University Radio-Frequency Communications & Terahertz Laboratory (RFCOM) Miami USA

ISBN: (数字)9798331509606

ISBN: (纸本)9798331509613

This paper presents a novel digital self-interference cancellation (DSIC) technique in full-duplex radios supporting simultaneous transmission and reception (STAR). Key to the design approach is the development of a behavioral model of the full-duplex radio front-end at the digital baseband. An auxiliary receiver (RX) chain is deployed to capture the transmitter (TX) chain and the leakage channel response. The leaked signal is digitally reconstructed and analog cancellation is performed at the low-noise amplifier (LNA) input to prevent desensitization. The cancellation algorithm is developed on a $16-\text{nm}$ AMDXilinx radio frequency system-on-chip (RFSoC) incorporating gigasample speed data converters and field programmable gate array (FPGA) on the same chip. The architecture is directly implemented on the programmable logic (PL) and the model coefficients are calculated offline in the ARM processor of the SoC. The hardware demonstration employs a reduced number of off-the-shelf analog components that provide an impressive digital cancellation of 20 dB for a maximum modulation bandwidth of 400 MHz.

关键词： Wireless communication Interference cancellation Auxiliary transmitters Radio transmitters Stars Modulation Receivers Full-duplex system Wideband Field programmable gate arrays

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Modelling and Performance Analysis of Visible Light Communication System in Industrial Implementations

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computers, Materials & Continua 2023年第11期77卷 2189-2204页

作者： Mohammed S.M.Gismalla Asrul I.Azmi Mohd R.Salim Farabi Iqbal Mohammad F.L.Abdullah Mosab Hamdan Muzaffar Hamzah Abu Sahmah M.Supa’at Faculty of Electrical Engineering Faculty of EngineeringUniversiti TeknologiMalaysiaSkudai81310Malaysia Lightwave Communications Research Group(LCRG) Faculty of Electrical EngineeringUniversiti TeknologiSkudaiJohorMalaysia Department of Communication Engineering Faculty of Electrical and Electronic EngineeringUniversiti Tun Hussein Onn Malaysia(UTHM)Parit RajaBatu PahatJohor86400Malaysia Faculty of Computing and Informatics Universiti Malaysia SabahKota Kinabalu88400Malaysia Department of Computer Science University of São PauloSão PauloBrazil

Visible light communication(VLC)has a paramount role in industrial implementations,especially for better energy efficiency,high speed-data rates,and low susceptibility to ***,since studies on VLC for industrial implementations are in scarcity,areas concerning illumination optimisation and communication performances demand further *** such,this paper presents a new modelling of light fixture distribution for a warehouse model to provide acceptable illumination and communication *** proposed model was evaluated based on various semi-angles at half power(SAAHP)and different height levels for several parameters,including received power,signal to noise ratio(SNR),and bit error rate(BER).The results revealed improvement in terms of received power and SNR with 30 Mbps data *** modulations were studied to improve the link quality,whereby better average BER values of 5.55×10^(−15) and 1.06×10^(−10) had been achieved with 4 PAM and 8 PPM,*** simulation outcomes are indeed viable for the practical warehouse model.

关键词： Visible light communication(VLC) industrial applications warehouse model light fixtures bit error rate(BER)

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Joint Resource Allocation and Data Offloading for Closed-Loop Controls in Satellite-UAV Networks 16

Joint Resource Allocation and Data Offloading for Closed-Loo...

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16th International Conference on Wireless communications and Signal Processing, WCSP 2024

作者： Lei, Chengleyang Feng, Wei Wei, Peng Chen, Yunfei Ge, Ning Mao, Shiwen Tsinghua University Department of Electronic Engineering Beijing100084 China Tsinghua University State Key Laboratory of Space Network and Communications Beijing100084 China University of Electronic Science and Technology of China National Key Laboratory of Science and Technology on Communications Chengdu611731 China University of Durham Department of Engineering DurhamDH1 3LE United Kingdom Auburn University Department of Electrical and Computer Engineering AuburnAL36849 United States

ISBN: (纸本)9798350390643

To efficiently provide coverage for the machines and robots in remote areas, satellites and unmanned aerial vehicles (UAVs) can be utilized. In such scenarios, UAVs need to integrate different functions to support the control tasks of robots efficiently, while satellites can serve as backhaul to the cloud. To improve the overall performance of the closed-loop control tasks of robots, we jointly optimize the communication and computing resource allocation with data offloading. Specif-ically, we explore the linear quadratic regulator (LQR) cost to measure the control performance and formulate a sum LQR cost minimization problem. An iterative algorithm is proposed to solve the optimization problem. Simulation results are provided to demonstrate the superiority of the proposed scheme. © 2024 IEEE.

关键词： Resource allocation

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Analysis of Rain Visibility Attenuation on Free Space Optics (FSO) for South African Weather Conditions

Analysis of Rain Visibility Attenuation on Free Space Optics...

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Electrical, computer and Energy Technologies (ICECET), International Conference on

作者： Zanele Mahlobogwane Emmanuel Mukubwa Nelendran Pillay Department of Computer Systems Engineering Tshwane University of Technology Pretoria South Africa Department of Electrical and Communications Engineering Moi University KipKenya Cheptiret Kenya Department of Electronics and Computer Engineering Durban University of Technology Durban South Africa

ISBN: (数字)9798350395914

ISBN: (纸本)9798350395921

The Free Space Optics (FSO) is a high-speed connectivity system that has the same advantages of speed and bandwidth as that of optic fiber. In comparison to optic fiber, FSO is the preferred choice when it comes to cost and deployment period. However, one of the main challenges with FSO is the changing weather conditions that affect the signal since the transmitted signal is radiated through the atmosphere. This investigation focuses on examining the variables that influence the reduction of visibility at different wavelengths: 750nm, 780nm, 850nm, and 1550nm. The locations of interest concerning visibility and rain data are Pretoria, Upington, Bloemfontein, and Cape Town in the Republic of South Africa. Results indicate that fog attenuates the signal more when compared to rain. Furthermore, signals transmitted at 1550nm will attenuate the signal less when compared to the other wavelengths of interest.

关键词： Optical fibers Rain Free-space optical communication Costs Optical attenuators Bandwidth Attenuation Atmospheric waves Meteorology High-speed optical techniques

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Fault Tolerance and Cost Effectiveness Analysis of Low-Powered 3D-TESH Network 4

Fault Tolerance and Cost Effectiveness Analysis of Low-Power...

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4th International Conference on Sustainable Technologies for Industry 4.0, STI 2022

作者： Faisal, Faiz Al Hafizur Rahman, M.M. Inoguchi, Yasushi Green University of Bangladesh Department of Computer Science and Engineering Dhaka Bangladesh Ccsit King Faisal University Department of Computer Networks & Communications Saudi Arabia Jaist Research Center for Advanced Computing Infrastructure Nomi Ishikawa Japan

ISBN: (纸本)9781665490450

Exa-scale supercomputing is the prime target for the supercomputers. To reach at that point, supercomputers require redesigning the interconnection networks to support high network scalability, suitable network performance, low cost-performance ratio, low power usage, high fault-tolerance, low network congestion and high throughput with low latency. Among the thousand of interconnection networks, one of the most capable one is 3D-TESH, is a hierarchical interconnection network (HIN) interconnected with multiple basic modules (basic modules are basically treated as single on-chip network), where each on-chip network is similar to a 3Dmesh network and off-chip network are built using the 2Dtorus connections. Some static network parameters as well as dynamic communication performance (on-chip level) had been studied earlier for 3DTESH, which ensured the high significance of this network in comparing with others. Moreover, in case of power consumption, it requires about 41% less router power than 5Dtorus at the on-chip level. In this paper, we like to evaluate some other important static parameters like- packing density, fault tolerance, wiring complexity, cost effectiveness factor and etc. Here, we found that 3D-TESH yields much better results than network like - 3Dmesh, 2Dmesh, 2Dtorus, TESH and even the 3Dtorus. © 2022 IEEE.

关键词： Cost effectiveness

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Five Coherent Dispersive Waves Generation of OAM Mode in a Dispersion-engineered Double-ring-core Fiber

Five Coherent Dispersive Waves Generation of OAM Mode in a D...

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CLEO: Science and Innovations in CLEO 2024, CLEO: S and I 2024 - Part of Conference on Lasers and Electro-Optics

作者： Geng, Wenpu Fang, Yuxi Bao, Changjing Pan, Zhongqi Yue, Yang Institute of Modern Optics Nankai University Tianjin300350 China Department of Electrical Engineering University of Southern California Los AngelesCA90089 United States Department of Electrical & Computer Engineering University of Louisiana at Lafayette LafayetteLA70504 United States School of Information and Communications Engineering Xi'an Jiaotong University Xi'an710049 China

We design a Ge-doped double-ring-core fiber to generate five OAM dispersive waves when pumped within the normal dispersion regime. This configuration holds promise for the development of highly coherent OAM superconti... 详细信息

关键词： Dispersion (waves)

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Deep Complex-valued Radial Basis Function Neural Networks and Parameter Selection

arXiv

引用

arXiv 2024年

作者： Soares, Jonathan A. Luiz, Vinícius H. Arantes, Dalton S. Mayer, Kayol S. Department of Communications School of Electrical and Computer Engineering Universidade Estadual de Campinas UNICAMP SP Campinas Brazil

In the ever-evolving field of artificial neural networks and learning systems, complex-valued neural networks (CVNNs) have become a cornerstone, achieving exceptional performance in image processing and telecommunications. More precisely, in digital communication systems, CVNNs have been delivering significant results in tasks like equalization, channel estimation, beamforming, and decoding. Among the CVNN architectures, the complex-valued radial basis function neural network (C-RBF) stands out, especially when operating in noisy environments such as 5G multiple-input multiple-output (MIMO) systems. In such a context, this paper extends the classical shallow C-RBF to deep architectures, increasing its flexibility for a wider range of applications. Also, based on the parameter selection of the phase transmittance radial basis function (PT-RBF) neural network, we propose an initialization scheme for the deep C-RBF. Via rigorous simulations conforming to 3GPP TS 38 standards for digital communications, our method not only outperforms conventional initialization strategies like random, K-means, and constellation-based methods but it also seems to be the only approach to achieve successful convergence for deep C-RBF architectures. These findings pave the way to more robust and efficient neural network deployments in complex-valued digital communication systems. © 2024, CC BY.

关键词： Radial basis function networks

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Surveying the Energy Efficiency and Applicability of Blockchain Platforms for the Internet of Things

Surveying the Energy Efficiency and Applicability of Blockch...

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IEEE World Forum on Internet of Things (WF-IoT)

作者： Lina AbuGhaush Anastassia Gharib Department of Communications Engineering Princess Sumaya University for Technology Amman Jordan Department of Computer Engineering Princess Sumaya University for Technology Amman Jordan

ISBN: (数字)9798350373011

ISBN: (纸本)9798350373028

Numerous smart applications have been made possible by recent advancements in edge computing and the Internet of Things (IoT). Smart cities, smart homes, smart grids, and intelligent healthcare are examples of related industries. They join edge and sensor devices together in the process of generating big data and controlling objects. Blockchain technology is well-known for addressing security concerns, trust issues, and data privacy in IoT networks. This is because blockchain’s decentralized nature and immutable records can guarantee IoT data integrity against unauthorized changes. However, limited energy and processing resources of IoT devices are generally insufficient to support many blockchain protocols. In this paper, we survey key features, energy efficiency, and applicability of selected blockchain platforms for the IoT. Compared to existing surveys in the field of blockchain and IoT integration, which focus on the security advantages of incorporating blockchain technologies in IoT networks, we focus on the energy efficiency and compatibility aspects to improve the performance of IoT networks.

关键词： Surveys Distributed ledger Smart cities Process control Smart homes Energy efficiency Blockchains Smart grids Internet of Things Security

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IoT-Enabled Multilevel Solar Dryer for Agriculture

IoT-Enabled Multilevel Solar Dryer for Agriculture

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2023 IEEE International Conference on Internet of Things and Intelligence Systems, IoTaIS 2023

作者： Lugnasin, Joseph Vincent B. Pena, Robert Alfie S. Dumlao, Samuel Matthew G. Macabebe, Erees Queen B. School of Science and Engineering Ateneo de Manila University Ateneo Energy Research Laboratory Department of Electronics Computer and Communications Engineering Quezon City Philippines Graduate School of Energy Science Kyoto University Department of Socio-Environmental Energy Science Kyoto Japan

ISBN: (纸本)9798350319040

In the Philippines, produce such as corn, rice, and fish are usually dried through the traditional sun-drying method due to the lack of affordable alternatives that ensure better drying conditions. As such, an off-grid Internet-of-Things(IoT) multilevel solar dryer for fish was designed and developed in this study. Anchovies (dilis), being one of the common fish dried in the Philippines, were dried using the solar dryer. In parallel, the traditional sun-drying method was also conducted to compare the drying time with the solar dryer method. The monitoring system mainly collected the data that helped verify the effectiveness of the solar dryer in drying produce. The recorded data showed that the designed solar dryer was effective in trapping the heat inside since the experiment showed that the mean temperature inside the solar dryer for the top, middle, and bottom racks were 38.96 °C, 36.47 °C and 36.86 °C, respectively, while the mean ambient temperature was 30.43 °C. Moreover, the experiment showed that the solar dryer model could dry the dilis four hours faster than the traditional sun-drying method. The data collected through the monitoring system showed that the solar dryer was effective in drying dilis. © 2023 IEEE.

关键词： Internet of things

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Design and Analysis of 8-Way RF Feeding Network for C-Band Airborne Synthetic Aperture Radar Applications Using Conventional Technique

Design and Analysis of 8-Way RF Feeding Network for C-Band A...

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2024 IEEE Wireless Antenna and Microwave Symposium, WAMS 2024

作者： Thokala, Niharika Vallabhaneni, Ramvasri Sanaka, Pooiitha Sai Nadha Raiu Chakravaram, Murali Sesha Kati, Praveena Kishore Kothapudi, Venkata Gottapu, Srinivas Kiran Tadikonda, Pradeep Kumar Gurajala, Vignesh Adapa, Chaitanya Pavan Rao Sunkara, Siva Nageswara Centre of Excellence Advanced RF Microwave & Wireless Communications School of Electrical Electronics and Communication Engineering Vignan's Foundation for Science Technology and Research Department of Electronics and Communication Engineering Guntur District Andhra Pradesh Vadlamudi522213 India Benedict College Department of Engineering and Computer Sciences 1600 Harden st ColumbiaSC29204 United States

ISBN: (纸本)9798350358926

This study proposes the design and analysis of an 8-way power divider for unequal division at 5.3 GHz for C band frequency. Many transmission line pieces make up the current power divider. These Transmission lines were printed on a substrate material (RT/duroid 5880, 1.6 mm thick, permittivity 2.2, and loss tangent 0.0002).The 8-way power divider's unequal amplitudes are constructed using Taylor's 1-parameter method to achieve the side projections levels - 17 dB down as from main *** proposed power divider consists of using 2 transmission lines with a 3/4 frequency are connected to branched microstriplines, providing excellent isolation and matching between the power divider's two output ports. This power divider is composed of three stages. A 1:2 power divider is used in the first stage, a 1:4 power divider is used in the second stage, and a 1:8 power divider is used in the third stage. According to the simulation results, 1:2 delivers half of the input power, 1:4 produces one-fourth of the power, and 1:8 delivers one-eighth of the input *** of these assessments were done with the Advanced Design System (ADS) simulation programme. According to both simulated and measured data, the return loss exceeds -35 dB, and the isolation across the output terminals exceeds -40 dB. The proposed circuit operates effectively at C-band frequencies in terms of return loss and isolation (4GHz and 8GHz). © 2024 IEEE.

关键词： Electric lines

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