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2021 IEEE International Conference on Signal Processing, Information, Communication & Systems (SPICSCON)最新文献

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A Dual Band Miniaturized Spiral-shaped Patch Antenna for 5G and WiFi-5/6 Applications 一种用于5G和wifi 5/6应用的双频小型化螺旋形贴片天线
Sajeeb Chandra Das, L. Paul, Md. Najmul Hossain, Md. Zulfiker Mahmud, R. Azim
A dual band spiral-shaped patch antenna (SPA) is designed and proposed for 5G and WiFi-5/6 applications. The Rogers RT 5880 (lossy) substrate with a compact size of 20×20×0.79 mm3 has been used to design the spiral patch antenna. The dual band antenna resonates at 3.61 GHz (3.53–3.7 GHz) and 5.56 GHz (4.7–7.24 GHz) with very good reflection coefficients of −41.29 dB and −37.85 dB respectively which cover lower 5G (n48 CBRS (USA): 3.55 – 3.7 GHz, Korea: 3.4–3.7 GHz), WiFi-5 (5.15–5.85 GHz) and WiFi-6 (5.925 – 7.125 GHz) bands. It has gain of 1.503 dB, 2.767 dB and directivity of 3.057 dBi, 3.368 dBi and VSWR of 1.017, 1.025 at resonant frequencies 3.61GHz and 5.56 GHz respectively. The peak gain and directivity of the SPA are 3.95 dB and 5 dBi. The spiral-shaped patch with optimized dimensions enhances the antenna performances and ensures good impedance matching to make it suitable for lower 5G and WiFi-5/6 applications.
设计并提出了一种适用于5G和wifi 5/6应用的双频螺旋贴片天线(SPA)。Rogers RT 5880(有损)基板的紧凑尺寸为20×20×0.79 mm3,用于设计螺旋贴片天线。双频天线谐振频率为3.61 GHz (3.53-3.7 GHz)和5.56 GHz (4.7-7.24 GHz),反射系数分别为- 41.29 dB和- 37.85 dB,覆盖较低的5G (n48 CBRS(美国):3.55 - 3.7 GHz,韩国:3.4-3.7 GHz), WiFi-5 (5.15-5.85 GHz)和WiFi-6 (5.925 - 7.125 GHz)频段。在3.61GHz和5.56 GHz谐振频率下,增益分别为1.503 dB、2.767 dB,指向性分别为3.057 dBi、3.368 dBi,驻波比分别为1.017、1.025。SPA的峰值增益和指向性分别为3.95 dB和5 dBi。优化尺寸的螺旋形贴片增强了天线性能,保证了良好的阻抗匹配,适合低5G和wi - fi 5/6应用。
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引用次数: 0
Machine learning and Lexical Semantic-based Sentiment Analysis for Determining the Impacts of the COVID-19 Vaccine 确定COVID-19疫苗影响的机器学习和基于词汇语义的情感分析
Samrat Alam, Sajal Das Shovon, Naimul Hoque Joy
In 2020 COVID-19 has taken the world by storm. Scientists from around the world are still working to develop a more effective vaccine for this disease. AstraZeneca, Moderna, Sputnik V and Comirnaty (Pfizer) are just a few of the vaccines that have been developed and are now being used by large populations. Social media is a powerful tool for people to express their opinions on current events, such as COVID-19 and its vaccine. It is highly noticeable that people are becoming increasingly concerned about the availability and effectiveness of these vaccines and other remedies for COVID-19. Healthcare organizations and professionals can acquire useful insights into vaccination safety by evaluating people’s sentiments. Furthermore, it can also assist to prevent unnecessary panic and the spread of misinformation among people. In this paper, a comprehensive analysis of people’s sentiments regarding the vaccination against COVID-19 is shown. Twitter’s data regarding the vaccine for COVID-19 from January to December of 2020 was collected from Kaggle for analysis. Necessary preprocessing techniques have been used to prepare and label the data based on textual sentiment using the lexical semantic methods: TextBlob and VADER. Various machine learning methods like Recurrent Neural Network (RNN), Convolutional Neural Network (CNN), merged model (RNN+CNN) and Logistic Regression have been used to analyze the public sentiments and to visualize their concerns regarding the vaccination against COVID-19 throughout 2020. Then, the results from both TextBlob and VADER were compared in order to obtain the highest possible accuracy and to better understand the reasons for them.
2020年,2019冠状病毒病席卷全球。来自世界各地的科学家仍在努力开发针对这种疾病的更有效的疫苗。阿斯利康(AstraZeneca)、Moderna、Sputnik V和Comirnaty(辉瑞)只是已经开发并正在大量人群中使用的疫苗中的一小部分。社交媒体是人们表达对COVID-19及其疫苗等时事观点的有力工具。非常值得注意的是,人们越来越关注这些疫苗和其他COVID-19补救措施的可得性和有效性。医疗机构和专业人员可以通过评估人们的情绪来获得有关疫苗接种安全性的有用见解。此外,它还有助于防止不必要的恐慌和错误信息在人们之间的传播。本文全面分析了民众对COVID-19疫苗接种的看法。Twitter从2020年1月至12月收集了有关COVID-19疫苗的数据,并从Kaggle进行了分析。使用了必要的预处理技术,利用词汇语义方法TextBlob和VADER对基于文本情感的数据进行准备和标记。各种机器学习方法,如循环神经网络(RNN)、卷积神经网络(CNN)、合并模型(RNN+CNN)和逻辑回归,已被用于分析公众情绪,并可视化他们对2020年全年COVID-19疫苗接种的担忧。然后,比较TextBlob和VADER的结果,以获得尽可能高的准确性,并更好地理解其原因。
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引用次数: 0
Antenna Design for University Low Cost Student-Built CubeSat Missions 面向大学生低成本立方体卫星任务的天线设计
Md. Shakhawat Hossen, Sibly Noman
This paper focuses on the selection criterion of S band patch antenna for university student led low cost nanosatellite missions. These nanosatellites are most often known as Cube Satellites (CubeSats). Different design challenges are categorized and discussed here based on the design considerations and limitations of previous research works. And a novel S band (2 – 4 GHz) operated coaxial feed patch antenna is also proposed in the following manuscript. The simulated results show good agreement for the operating frequency of 2.69 GHz and desirable performance in gain and directivity. The antenna is simulated in a Far-field region and the directivity is measured at 7.114 dBi which is convenient for most of the ground communications, high speed data download links, inter-satellite communications, remote sensing, and other satellite applications. As the proposed antenna design is focused on low cost solution for the CubeSat antennas, Rogers RT5870 is used as substrate material for mitigating the electrical loss at its best. The reflection parameter is observed as −11.116 dB, which is very feasible comparing with other existing CubeSat antennas.
研究了大学生主导的低成本纳米卫星任务中S波段贴片天线的选择准则。这些微型卫星通常被称为立方体卫星(CubeSats)。不同的设计挑战被分类和讨论在这里基于设计考虑和局限性的先前的研究工作。本文还提出了一种新型的S波段(2 - 4ghz)同轴馈电贴片天线。仿真结果表明,该系统工作频率为2.69 GHz,具有较好的增益和指向性。该天线在远场区域进行了仿真,测量到的指向性为7.114 dBi,方便了大多数地面通信、高速数据下载链路、星间通信、遥感和其他卫星应用。由于提出的天线设计侧重于CubeSat天线的低成本解决方案,因此使用Rogers RT5870作为衬底材料,以最大限度地减轻电损耗。观测到的反射参数为- 11.116 dB,与其他现有的立方体卫星天线相比,这是非常可行的。
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引用次数: 2
Implementing Deep Neural Network Based Encoder-Decoder Framework for Image Captioning 基于深度神经网络的图像字幕编解码器框架实现
Md. Mijanur Rahman, A. Uzzaman, S. Sami
This study is concerned with the development of a deep neural network-based framework, including a “convolutional neural network (CNN)” encoder and a “Long Short-Term Memory (LSTM)” decoder in an automatic image captioning application. The proposed model percepts information points in a picture and their relationship to one another in the viewpoint. Firstly, a CNN encoder excels at retaining spatial information and recognizing objects in images by extracting features to produce vocabulary that describes the photos. Secondly, an LSTM network decoder is used for predicting words and creating meaningful sentences from the built keywords. Thus, in the proposed neural network-based system, the VGG-19 model is presented for defining the proposed model as an image feature extractor and sequence processor, and then the LSTM model provides a fixed-length output vector as a final prediction. A variety of images from several open-source datasets, such as Flickr 8k, Flickr 30k, and MS COCO, were explored and used for training as well as testing the proposed model. The experiment was done on Python with Keras and TensorFlow backend. It demonstrated the automatic image captioning and evaluated the performance of the proposed model using the BLEU (BiLingual Evaluation Understudy) metric.
本研究涉及基于深度神经网络框架的开发,包括自动图像字幕应用中的“卷积神经网络(CNN)”编码器和“长短期记忆(LSTM)”解码器。提出的模型感知图像中的信息点及其在视点中的相互关系。首先,CNN编码器擅长于保留空间信息,并通过提取特征来产生描述照片的词汇表来识别图像中的物体。其次,使用LSTM网络解码器来预测单词并从构建的关键词中创建有意义的句子。因此,在基于神经网络的系统中,提出了VGG-19模型,用于将所提出的模型定义为图像特征提取器和序列处理器,然后LSTM模型提供固定长度的输出向量作为最终预测。我们对来自几个开源数据集(如Flickr 8k、Flickr 30k和MS COCO)的各种图像进行了探索,并将其用于训练和测试所提出的模型。实验是在Python上使用Keras和TensorFlow后端完成的。演示了自动图像字幕,并使用BLEU(双语评价替补)度量评估了所提出模型的性能。
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引用次数: 1
A Comprehensive Model to Monitor Mental Health based on Federated Learning and Deep Learning 基于联邦学习和深度学习的心理健康监测综合模型
Md. Appel Mahmud Pranto, Nafiz Al Asad
Mental health is equally treated as important as physical health. Sound mental health leads to a peaceful life. Mental has a big impact on our thoughts, feelings, and behaviors. People’s mental health could be disturbed like facing depression. Depression is a major concern nowadays. People like to share their feelings and thoughts using several social media like Facebook, Twitter, WhatsApp, etc. In this paper, we propose a model based on federated learning and deep learning combined to monitor mental health using these social media data. In the proposed system data is collected from the user’s keyboard as people use the keyboard to type their thoughts, feelings on social media. Depression level is detected on daily basis using federated learning and recurrent neural network (RNN). The global model is saved into the global server. User’s local device inherits global model to test their daily used data on the keyboard. After testing, the user’s test data is sent anonymously to the global dictionary and then the global dictionary is updated daily using all user’s anonymous tested data. Then using this updated global sentiment dictionary global model is trained again and sent to all user’s local devices to monitor their mental health. Our proposed model acquires 93.46% accuracy on 60th day.
心理健康与身体健康同样重要。良好的心理健康带来平静的生活。心理对我们的思想、感觉和行为有很大的影响。人们的心理健康可能会受到干扰,就像面对抑郁症一样。抑郁症是当今的一个主要问题。人们喜欢用Facebook、Twitter、WhatsApp等社交媒体来分享他们的感受和想法。在本文中,我们提出了一个基于联邦学习和深度学习相结合的模型,利用这些社交媒体数据来监测心理健康。在拟议的系统中,数据是从用户的键盘上收集的,因为人们使用键盘在社交媒体上输入他们的想法和感受。使用联邦学习和递归神经网络(RNN)对日常抑郁水平进行检测。全局模型被保存到全局服务器中。用户的本地设备继承全局模型,在键盘上测试他们的日常使用数据。测试完成后,将用户的测试数据匿名发送到全局字典中,然后使用所有用户的匿名测试数据每天更新全局字典。然后利用更新后的全局情绪词典再次训练全局模型,并将其发送到所有用户的本地设备上,监测用户的心理健康状况。我们提出的模型在第60天获得了93.46%的准确率。
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引用次数: 1
Averting from Convolutional Neural Networks for Chest X-Ray Image Classification 基于卷积神经网络的胸部x线图像分类
Vrushank Changawala, Keshav Sharma, M. Paunwala
This paper attempts to survey newer approaches that do not use convolutional neural networks (CNNs) conventionally to the evolving field of medical image classification. While analyzing, firstly, an all feed-forward architecture MLP-Mixer and secondly, the inverted convolutional kernels coined as Involution with the baseline ResNets, both models yield comparable results in detecting Covid19 and pneumonia using Chest X-ray images. On top of that, merging Involution kernels into ResNet architectures can produce promising performance while training on roughly 40% fewer parameters. This paper further compares these two architectures with various CNN-based models. We hope this survey further helps the research community to utilize the capabilities of these newly introduced architectures in the medical field. [Code: https://github.com/Vrushank264/Averting-from-CNNs]
本文试图将不使用卷积神经网络(cnn)的新方法应用于不断发展的医学图像分类领域。首先分析全前馈架构MLP-Mixer,其次分析与基线ResNets结合的倒卷积核,这两种模型在使用胸部x射线图像检测covid - 19和肺炎方面产生了相当的结果。最重要的是,将Involution内核合并到ResNet架构中可以产生令人满意的性能,同时训练参数减少了大约40%。本文进一步将这两种架构与各种基于cnn的模型进行比较。我们希望这项调查能进一步帮助研究界利用这些新引入的架构在医学领域的能力。(代码:https://github.com/Vrushank264/Averting-from-CNNs)
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引用次数: 0
Pulse Code Modulations with Derivative Dependent Automatic Sampling Time Quantization and Coupled Encoding 脉冲编码调制与导数相关的自动采样时间量化和耦合编码
Md. Nazmul Islam, Taufiq Abdullah, Md. Eakub Ali
The main purpose of this experiment is to analyze automatic sampling period quantization with respect to instantaneous derivatives of the signal. The derivatives of the signal have been computed using two individual time periods. The derivative result is compared by the detector to achieve the sampling time for soft and sharp regions. The system is quantized to get 1-bit time coding. The time and signal are integrated with a semi-synchronous model. This paper includes simulations and comparative discussions.
本实验的主要目的是分析相对于信号的瞬时导数的自动采样周期量化。用两个单独的时间段计算了信号的导数。利用检测器对导数结果进行比较,得到软区和锐区采样时间。对系统进行量化,得到1位时间编码。时间和信号采用半同步模式集成。本文包括仿真和比较讨论。
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引用次数: 0
Design of a 10 Bit Low Power Split Capacitor Array SAR ADC 一个10位低功耗分裂电容阵列SAR ADC的设计
Md. Tanvir Shahed, A. Rashid
In this paper, a low power split capacitor array structure based successive approximation register (SAR) type analog to digital converter (ADC) is proposed. To minimize power, this ADC combines the capacitive digital to analog converter (DAC) with the sample and hold (S/H) circuit, uses the Split binary-weighted capacitor array for the DAC, and utilizes the open-loop comparator. The ADC consumes low power with good performance. The DAC efficiently uses charge recycling to achieve a high speed of operation. The proposed ADC is designed using 0.18-μm CMOS technology. At a 1.8-V supply and 2 MS/s, the ADC achieves a spurious-free dynamic range (SFDR) of 54 dB and consumes 0.27633 mW.
提出了一种基于逐次逼近寄存器(SAR)型模数转换器(ADC)的低功率分裂电容阵列结构。为了最小化功耗,该ADC将电容式数模转换器(DAC)与采样和保持器(S/H)电路相结合,为DAC使用Split二元加权电容器阵列,并利用开环比较器。该ADC功耗低,性能好。DAC有效地利用电荷回收来实现高速运行。该ADC采用0.18 μm CMOS工艺设计。在1.8 v电源和2 MS/s下,ADC实现54 dB的无杂散动态范围(SFDR),功耗为0.27633 mW。
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引用次数: 0
HOG and Dimensional Feature based Vehicle Classification for Parking Slot Allocation 基于HOG和维度特征的车位分配车辆分类
Mac Akmal-Jahan, J. Niranjana, B. Vithusa, SF. Jumani, RF. Zulfa
The utilization of vehicles increases with the increased number of populations. Unplanned parking strategies causes additional traffic problems, waste of time, unwanted conflicts among drivers, damages etc. Vehicles need appropriate parking areas based on their size and dimension to be fit well. In Sri Lanka, a manual processing is adopted to handle most of the parking areas, which wastes energy, time and causes stress. In city areas, parking vehicles on the road-side is strictly restricted. In this paper, an automated system of vehicle classification for allocating parking slots in public premises is proposed. This system can capture a set of vehicle images, identify the type of vehicle, estimate the size of vehicle and allocate a good fit parking slot based on their dimensional and type parameters. Geometrical or dimensional attributes and Histogram of Oriented Gradient features are extracted, and Support Vector Machine is used for classification. Feature fusion is exploited to investigate the impact of fusion strategy on system performance. Principal Component Analysis is applied to reduce the dimension of the feature vector, which results further significant improvement in the system performance.
车辆的使用率随着人口的增加而增加。无计划的停车策略会造成额外的交通问题,浪费时间,司机之间不必要的冲突,损坏等。车辆需要根据其大小和尺寸设置合适的停车区域,以便停放。在斯里兰卡,大部分停车区域都采用人工处理的方式,这既浪费了精力,时间,也造成了压力。在城市地区,路边停车是严格限制的。本文提出了一种用于公共场所车位分配的车辆自动分类系统。该系统可以捕获一组车辆图像,识别车辆类型,估计车辆大小,并根据车辆尺寸和类型参数分配合适的停车位。提取几何或维度属性和有向梯度特征直方图,利用支持向量机进行分类。利用特征融合研究融合策略对系统性能的影响。采用主成分分析对特征向量进行降维处理,进一步显著提高了系统性能。
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引用次数: 0
A Fuzzy Logic Approach for Improving Throughput of the UAV-Assisted Wireless Networks 一种提高无人机辅助无线网络吞吐量的模糊逻辑方法
Sadia Afrin, Md. Sakir Hossain, Md.R. Iqbal, Alif Refat, Ahsan U. Tamim
Unmanned aerial vehicle (UAV)-assisted wireless network is envisioned as a dominant network in 6G to cope with sudden surge of data rate demand and to provide flexible data connectivity. This network works as a moving hotspot. Existing UAV deployment techniques suffer from limited throughput and user satisfaction. In this paper, we propose a novel UAV deployment algorithm exploiting the fuzzy c-means clustering to overcome the limitations involved in k-means clustering so that a higher network throughput can be achieved and to ensure a higher user satisfaction. We compare the performance of the proposed UAV deployment algorithm with the performance of the state-of-the-art k-means algorithm. Simulation results show that the proposed method outperforms the k-means algorithm in terms of network throughput, user satisfaction ratio, and consistency in throughput. Up to 9% improvement in the network throughput is obtained due to the proposed method. We see that the network throughput is proportional to the number of UAVs, and more users can be satisfied by the proposed method.
无人机(UAV)辅助无线网络被设想为6G中的主导网络,以应对突然激增的数据速率需求并提供灵活的数据连接。这个网络就像一个移动的热点。现有的无人机部署技术受到吞吐量和用户满意度的限制。在本文中,我们提出了一种新的无人机部署算法,利用模糊c均值聚类来克服k均值聚类的局限性,从而实现更高的网络吞吐量并确保更高的用户满意度。我们将提出的无人机部署算法的性能与最先进的k-means算法的性能进行了比较。仿真结果表明,该方法在网络吞吐量、用户满意度和吞吐量一致性方面优于k-means算法。由于所提出的方法,网络吞吐量提高了9%。我们看到,网络吞吐量与无人机数量成正比,并且通过提出的方法可以满足更多的用户。
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引用次数: 0
期刊
2021 IEEE International Conference on Signal Processing, Information, Communication & Systems (SPICSCON)
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