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2021 Advanced Communication Technologies and Signal Processing (ACTS)最新文献

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Performance Analysis of NOMA Systems in Rayleigh and Rician Fading Channels 瑞利和瑞利衰落信道下NOMA系统性能分析
Pub Date : 2021-12-15 DOI: 10.1109/ACTS53447.2021.9708221
Bibekananda Panda, Poonam Singh
Non-Orthogonal Multiple Access (NOMA) is an effective innovation for fifth-generation and forthcoming wireless technology. NOMA aims to encounter the challenges of low latency, high accuracy, large availability, and peak performance. In this paper, the performance mechanisms of NOMA are discussed as compared to Orthogonal Multiple Access (OMA), and also for different user (far and near) scenarios. The techniques such as Heterogeneous Network (HetNet), Ultra-Reliable Low-Latency Communication (URLLC), and other 5G evolving technologies are highlighted for improved performance in the NOMA system. The simulation results are carried out to analyze the achievable capacity of OMA and NOMA, BER analysis, and sum-rate analysis of NOMA systems over Rayleigh and Rician fading channels. The simulation results reveal that the Rician fading channels have better performance than Rayleigh fading channels. This article also discusses potential research challenges as well as addressing current and future issues in NOMA.
非正交多址(NOMA)是第五代和即将到来的无线技术的有效创新。NOMA旨在应对低延迟、高精度、高可用性和峰值性能的挑战。本文讨论了NOMA与正交多址(OMA)的性能机制,以及不同用户(远、近)场景下NOMA的性能机制。异构网络(HetNet)、超可靠低延迟通信(URLLC)等技术和其他5G演进技术在NOMA系统中被强调用于提高性能。仿真结果分析了OMA和NOMA系统在瑞利和瑞利衰落信道下的可实现容量、误码率分析以及NOMA系统的和速率分析。仿真结果表明,与瑞利衰落信道相比,瑞利衰落信道具有更好的性能。本文还讨论了潜在的研究挑战以及解决NOMA中当前和未来的问题。
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引用次数: 3
A Novel Range-Free Anchor-Free Localization In WSN Using Sun Flower Optimization Algorithm 基于太阳花优化算法的无线传感器网络无距离无锚定位
Pub Date : 2021-12-15 DOI: 10.1109/ACTS53447.2021.9708099
V. C. S. R. Rayavarapu, A. Mahapatro
One of the foremost complex issues in the application of wireless sensors is locating the sensor. Most standard range-free localization methods ignore the anisotropy factors common in Wireless Sensor Networks (WSNs), resulting in low placement precision. This paper proposes a well-performing Sun Flower Optimization Algorithm (SFO) for implementing the range-free anchor-free localization using Distance Vector-Hop (DV-Hop) in WSN. The localization of unknown nodes in the network is possible using a new objective model under range-free and anchor-free scenarios. The localization accuracy tremendously enhances when differentiated from the conventional methods.
在无线传感器的应用中,最重要的复杂问题之一是传感器的定位。大多数标准的无距离定位方法忽略了无线传感器网络中常见的各向异性因素,导致定位精度较低。本文提出了一种性能良好的太阳花优化算法(SFO),利用距离矢量跳(DV-Hop)实现无线传感器网络的无距离无锚定位。在无距离和无锚点的情况下,利用新的目标模型实现了网络中未知节点的定位。与传统的定位方法相比,该方法的定位精度大大提高。
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引用次数: 0
A Compact Planar Quint-Passband Lowpass-Bandpass Filter Using Open-End Folded Stub CRLH-TLs 基于开放式折叠短段CRLH-TLs的紧凑平面五通低通带通滤波器
Pub Date : 2021-12-15 DOI: 10.1109/ACTS53447.2021.9708380
Abhishek Kumar, D. Upadhyay
This paper proposes compact quint-passband filter (QPF) having a Low passband (LP) and four Bandpass passbands (BPs). The QPF is implemented using four Composite right/left-handed open-end folded stubs (CRLH-OEFS) loaded on the main transmission line. In the LP region, the measured insertion loss is less than 0.56 dB. Four BPs show measured insertion loss less than 0.9 dB, 0.88 dB, 0.93 dB and 1.25 dB. Measured 3 dB cut-off frequency of the LP region is 0.61 GHz. The four BPs with center frequency 1.87, 3.61, 5.3 and 6.5 GHz have 3 dB fractional bandwidth of 44, 10.8, 4.5 and 4.46, respectively. The transmission zeros (TZs) observed at 0.67 GHz, 0.95 GHz, 2.65 GHz, 3.83 GHz, 3.98 GHz, 6.11 GHz and 7.3 GHz have insertion loss of 31 dB, 47 dB, 22 dB, 31 dB, 43 dB, 45 dB and 21 dB, respectively. A parametric analysis of the QPF’s physical parameters and modelling of the filter’s equivalent LC circuit is presented in this paper. The proposed QPF shows a small footprint (0.098 λg × 0.051 λg, where λg is the guided wavelength of the 50 Ω microstrip line at 0.61 GHz), good rejections with insertion loss of 31 dB, 47 dB, 22 dB, 31 dB, 43 dB, 45 dB and 21 dB at respective TZs and a sharp transition due to the creation of seven TZs between LP and BP responses.
提出了一种具有一个低带和四个带通的紧凑型五通滤波器(QPF)。QPF是通过在主传输线上加载四个复合右/左开端折叠存根(CRLH-OEFS)来实现的。在LP区域,测量到的插入损耗小于0.56 dB。4个bp的插入损耗分别小于0.9 dB、0.88 dB、0.93 dB和1.25 dB。测得的低频段3db截止频率为0.61 GHz。中心频率为1.87、3.61、5.3和6.5 GHz的4个bp的3db分数带宽分别为44、10.8、4.5和4.46。在0.67 GHz、0.95 GHz、2.65 GHz、3.83 GHz、3.98 GHz、6.11 GHz和7.3 GHz观测到的传输零点(TZs)的插入损耗分别为31 dB、47 dB、22 dB、31 dB、43 dB、45 dB和21 dB。本文对QPF的物理参数进行了参数化分析,并对滤波器等效LC电路进行了建模。所提出的QPF具有小的占用空间(0.098 λg × 0.051 λg,其中λg是50 Ω微带线在0.61 GHz的引导波长),良好的抑制,在各自的TZs处插入损耗分别为31 dB、47 dB、22 dB、31 dB、43 dB、45 dB和21 dB,并且由于在LP和BP响应之间产生了7个TZs,因此具有明显的过渡。
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引用次数: 0
Sparsity based Radio Tomographic Imaging using Fused Lasso Regularization 基于稀疏度的融合Lasso正则化射电层析成像
Pub Date : 2021-12-15 DOI: 10.1109/ACTS53447.2021.9708330
Abhijit Mishra, U. K. Sahoo, S. Maiti
The increase in demand of detecting obstructions in a wireless medium without attaching any device with the target is well facilitated by the Radio Tomographic Imaging (RTI) system. Even though it is a promising technique it is a cumbersome task to get the exact position and shape of an object due to ill-posed nature of RTI system. Thus vital task is to effectively choose a regularization technique that not only enhances sparsity by reducing noise after detection but also preserves edges of the object with its appropriate shape by using a heuristic weight model. RTI facilitates us with an imaging vector indicating the loss fields created by obstacles in the medium having knowledge of received signal strength(RSS) values and a weight model that assigns weight to the attenuated pixels in a wireless network. This paper addresses the above-mentioned problem by using a fused lasso regularization via ADMM. The second part of the paper extends performance of fused lasso regularization by implementing it incrementally using distributed learning. The performance metrics shows that fused lasso regularization not only reduces the noise level by increasing the sparsity but also retains the sharp features of the object.
无线层析成像(RTI)系统可以很好地促进无线介质中障碍物检测需求的增加,而无需在目标上附加任何设备。尽管这是一种很有前途的技术,但由于RTI系统的病态特性,获得物体的精确位置和形状是一项繁琐的任务。因此,重要的任务是有效地选择一种正则化技术,该技术既可以通过降低检测后的噪声来增强稀疏性,又可以使用启发式权值模型来保留目标的适当形状的边缘。RTI为我们提供了一个成像矢量,该矢量指示介质中障碍物产生的损失场,并具有接收信号强度(RSS)值的知识,以及一个权重模型,该模型将权重分配给无线网络中衰减的像素。本文采用基于ADMM的融合套索正则化方法解决了上述问题。论文的第二部分通过使用分布式学习增量实现融合套索正则化,扩展了融合套索正则化的性能。性能指标表明,融合套索正则化不仅通过增加稀疏度来降低噪声水平,而且保留了目标的清晰特征。
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引用次数: 6
On the Frequency Reconfigurability of a Square Microstrip Patch Antenna With a Fractal Ground Plane 分形地平面方形微带贴片天线频率可重构性研究
Pub Date : 2021-12-15 DOI: 10.1109/ACTS53447.2021.9707907
Iqra Masroor, J. A. Ansari, Amrees Pandey
In the present work, a compact Square Microstrip Patch Antenna (SMPA) is reconfigured in frequency. The switching element used for antenna reconfiguration is a single PIN diode modeled on High Frequency Structure Simulator (HFSS) software. The ON/OFF switching configurations of the diode make the antenna capable of resonating at three different frequencies in the C-band (4–8 GHz): 5.3 GHz and 7.2 GHz in the OFF state and 6.3 GHz in the ON state. Inclusion of square fractal slots on the ground plane of the SMPA lead to considerable improvement in bandwidth.
本文对一种小型方形微带贴片天线(SMPA)进行了频率重构。用于天线重构的开关元件是一个用高频结构模拟器(HFSS)软件建模的单PIN二极管。二极管的开/关开关配置使天线能够在c波段(4-8 GHz)的三个不同频率上谐振:关闭状态下的5.3 GHz和7.2 GHz以及打开状态下的6.3 GHz。在SMPA的接平面上加入方形分形槽,大大提高了带宽。
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引用次数: 0
Optimal Resource Allocation in Two Tier Heterogeneous Network Through Network Slicing 基于网络切片的二层异构网络资源优化分配
Pub Date : 2021-12-15 DOI: 10.1109/ACTS53447.2021.9708385
S. Debnath, D. Sen, W. Arif
Scare spectrum resources of the wireless networks have to be used efficiently for network utility maximization. The allocation of resources to different services based on the differentiated quality of service (QoS) can be done with dynamic resource slicing (DRS) paradigm. DRS is very efficient in providing adequate QoS to the associated user of the network. In the two-tier heterogeneous network, considering the DRS framework, optimal allocation of radio resources to each user and association of user to a cell is a challenging task to be performed. In this work, the allocation of resources among normal data services and machine-to-machine services under the differentiated QoS is quantified and analyzed while considering the load dynamics of the 5G communication network. Here we utilize efficient state-of-the-art optimization algorithms to analyze the network utility maximization property under the consideration of user association to the network based on geographical location and cell capacity. It is observed that the formulated PSO and SSA based algorithm is efficient in respect of network utility maximization as compare to the geographical SINR based connected user to the network.
无线网络的频谱资源必须得到有效利用,以实现网络效用最大化。基于差异化服务质量(QoS)的资源分配可以通过动态资源切片(DRS)模式来实现。DRS在为网络的相关用户提供足够的QoS方面非常有效。在两层异构网络中,考虑到DRS框架,无线资源的优化分配和用户与小区的关联是一个具有挑战性的任务。本文在考虑5G通信网络负载动态的情况下,对差异化QoS下正常数据业务和机器对机器业务之间的资源分配进行了量化分析。本文利用最先进的优化算法,在考虑用户与基于地理位置和小区容量的网络关联的情况下,分析了网络效用最大化的特性。可以观察到,与基于地理SINR的网络连接用户相比,所制定的基于PSO和SSA的算法在网络效用最大化方面是有效的。
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引用次数: 0
Dual-Band Polarization Insensitive Quad-array Slotted Type Frequency Selective Surface with Wide Angular Stability 具有宽角稳定性的双波段偏振不敏感四阵列开槽型选频表面
Pub Date : 2021-12-15 DOI: 10.1109/ACTS53447.2021.9708327
D. Arun Kumar, S. Maity
In this work, a dual-band quad array slotted type absorber/reflector is presented for dual-band applications in smart stealth systems. The Frequency Selective Surface (FSS) is constructed from 1.6 mm thick FR4 material. The proposed FSS shows a dual-band at 5.68 and 7.94 GHz. It is also found that the proposed FSS is oblique incidence angle of the incident EM waves and insensitive to polarization. The Equivalent circuit model is also presented to understand the working principle of the FSS qualitatively.
在这项工作中,提出了一种双频四阵开槽型吸收/反射器,用于智能隐身系统的双频应用。频率选择表面(FSS)由1.6毫米厚的FR4材料构成。所提出的FSS在5.68 GHz和7.94 GHz具有双频。本文还发现,所提出的FSS是入射电磁波的斜入射角,对极化不敏感。为了定性地理解FSS的工作原理,还建立了等效电路模型。
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引用次数: 1
A Health Perspective Smartphone Application for the Safety of Road Accident Victims 一个健康视角的智能手机应用程序,用于道路交通事故受害者的安全
Pub Date : 2021-12-15 DOI: 10.1109/ACTS53447.2021.9708124
Kavya Parasana, G. K. Sahoo, S. Das, Poonam Singh
This work presents an android-based application, the SOS (Save Our Souls), a personal safety app that aims to reduce the emergency response time in case of any road casualty. Currently, the increase in the number of road fatalities and injuries requires an advanced system that can intimate for immediate rescue to save precious lives. The use of smartphone’s onboard sensors data for vehicular accident detection and intimation will help in reducing the rescue time. Providing additional geolocation data to the nearest available emergency responder will immensely improve the odds of survival while saving time and resources for emergency services. Using the pre-filled medical details of the user will also help doctors for necessary diagnoses, which in turn will increase the scope of saving lives. This work aims to use today’s cell phones features with three-axis accelerometer data to improve road safety. The developed android application will suggest the nearest hospital with a Google root map. The phone call facility for rescue is enabled with automatic and manual calling facility for informing pre-filled emergency units like police, hospital, family members. This work implemented the android application and verified its working, reducing the rescue time for accident victims.
这项工作提出了一个基于安卓的应用程序,SOS(拯救我们的灵魂),一个个人安全应用程序,旨在减少紧急响应时间,以防任何道路伤亡。目前,道路伤亡人数的增加需要一种先进的系统,可以立即进行救援,以挽救宝贵的生命。利用智能手机的车载传感器数据进行车辆事故检测和提示,将有助于减少救援时间。向最近可用的紧急救援人员提供额外的地理位置数据将极大地提高生存几率,同时节省紧急服务的时间和资源。使用用户预先填写的医疗详细信息也将帮助医生进行必要的诊断,这反过来又将扩大挽救生命的范围。这项工作旨在利用当今手机的三轴加速度计数据来改善道路安全。这款开发的安卓应用程序将通过谷歌根地图向用户推荐最近的医院。启用了救援电话设施,包括自动和手动呼叫设施,以便通知警察、医院、家属等预先填满的应急单位。本工作实现了android应用程序,并对其工作进行了验证,减少了事故受害者的救援时间。
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引用次数: 5
Improved outage performance with power optimization for URLLC using Cooperative NOMA 通过使用协作NOMA对URLLC进行电源优化,提高了停电性能
Pub Date : 2021-12-15 DOI: 10.1109/ACTS53447.2021.9708102
Annapurna Pradhan, Susmita Das, Shaktimaan Debendra Pratap
Ultra-reliable low latency communication (URLLC) is one of the key services offered by the 5G wireless networks. This service type is characterized by stringent high reliability and low latency criteria, thus require efficient multiple access techniques to facilitate various mission-critical services. Non-orthogonal multiple access (NOMA) effectively enhances spectral efficiency and ensures fairness by exploiting the power allocation at receivers compared to orthogonal multiple access (OMA). Therefore, it becomes suitable for facilitating URLLC service. The addition of the cooperative relaying technique to NOMA can enhance the reliability of the data transmission. This motivated us to analyze the performance of cooperative NOMA (C-NOMA) for short packet URLLC data transmission. Hence, we have proposed a C-NOMA based system using the decode and forward (DF) relaying technique and successive interference cancellation (SIC) at the receiver to minimize the overall error probability for URLLC. The minimization of overall outage probability has been achieved by optimizing power allocation at the receiver considering the decoding error and error due to queuing delay violation while ensuring fair throughput among users. The simulation study has shown that the proposed C-NOMA based short packet transmission improves overall outage probability, energy efficiency, and ensures fair throughput among users in comparison to only NOMA and OMA based techniques.
超可靠低延迟通信(URLLC)是5G无线网络提供的关键服务之一。该业务类型具有严格的高可靠性和低延迟标准,因此需要高效的多址技术来实现各种关键业务。与正交多址(OMA)相比,非正交多址(NOMA)利用接收机的功率分配,有效地提高了频谱效率,保证了公平性。因此,它适合于实现URLLC业务。在NOMA中加入协同中继技术可以提高数据传输的可靠性。这促使我们对协作式NOMA (C-NOMA)在短包URLLC数据传输中的性能进行分析。因此,我们提出了一种基于C-NOMA的系统,使用解码和转发(DF)中继技术和接收器的连续干扰抵消(SIC)来最小化URLLC的总体错误概率。在保证用户间的公平吞吐量的同时,考虑到解码错误和排队延迟冲突导致的错误,优化接收端功率分配,实现了整体中断概率的最小化。仿真研究表明,与仅基于NOMA和OMA的技术相比,所提出的基于C-NOMA的短包传输提高了总体中断概率、能源效率,并确保了用户之间的公平吞吐量。
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引用次数: 2
Structural MRI based Alzheimer’s Disease prognosis using 3D Convolutional Neural Network and Support Vector Machine 基于三维卷积神经网络和支持向量机的结构MRI阿尔茨海默病预测
Pub Date : 2021-12-15 DOI: 10.1109/ACTS53447.2021.9708107
Shubham Dwivedi, Tripti Goel, Rahul Sharma, R. Murugan
Alzheimer’s Disease (AD) is a prevalent, irreversible, chronic, and progressive disease leading to structural changes in the brain, causing the cognitive decline of brain function. Early detection of AD before clinical manifestation is crucial for patient care, effective therapeutic measures, and cost-saving. To address the challenge of timely diagnosis, in this paper, we designed a 3D-CNN framework with SVM as a classifier to harness the advantages of both Deep learning (DL) and Machine learning (ML). Experiments on AD neuroimaging initiative (ADNI) dataset yields fair 91.85% accuracy, 95.56% sensitivity, 90% specificity, 82.69% precision, and 88.66% f-score exhibiting the SVM outperformance over other ML classifiers. Thus, the proposed model is effective for the prognosis of AD and can be incorporated in healthcare.
阿尔茨海默病(AD)是一种普遍的、不可逆的、慢性的、进行性的疾病,导致大脑结构改变,导致大脑功能的认知能力下降。在临床表现前早期发现阿尔茨海默病对患者护理、有效的治疗措施和节省费用至关重要。为了解决及时诊断的挑战,在本文中,我们设计了一个以SVM作为分类器的3D-CNN框架,以利用深度学习(DL)和机器学习(ML)的优势。在AD神经成像主动性(ADNI)数据集上的实验显示,SVM的准确率为91.85%,灵敏度为95.56%,特异性为90%,精度为82.69%,f值为88.66%,优于其他ML分类器。因此,该模型对阿尔茨海默病的预后是有效的,可以纳入医疗保健。
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引用次数: 2
期刊
2021 Advanced Communication Technologies and Signal Processing (ACTS)
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