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2019 IEEE 19th International Conference on Communication Technology (ICCT)最新文献

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Energy Efficiency Maximization of the SWIPT-based Full-Duplex Relay Cooperative System 基于swipt的全双工中继协作系统的能效最大化
Pub Date : 2019-10-01 DOI: 10.1109/ICCT46805.2019.8947258
Yifei Yan, Shun-wai Zhang
Aiming to maximize the energy efficiency of wireless communication to achieve green communication, this paper studies the energy efficiency optimization problem of full-duplex relay cooperative system based on simultaneous wireless information and power transfer (SWIPT). For the power-splitting protocol, the energy efficiency is optimized for the power-splitting factor and transmission power. Firstly, a SWIPT-based full-duplex relay cooperative system model is established. Then, it is proved that the energy efficiency formula is a convex function with respect to the power-splitting factor, and the optimal power-splitting factor is obtained. Meanwhile, this paper studies the scheme to improve the energy efficiency of the system by optimizing the source transmission power. Furthermore, a joint optimization algorithm based on iteration is proposed to jointly optimize the power-splitting factor and transmission power. Finally, the simulation results demonstrate the effectiveness of the proposed optimization algorithm.
为了使无线通信的能效最大化,实现绿色通信,本文研究了基于同步无线信息与功率传输(SWIPT)的全双工中继协同系统的能效优化问题。对于功率分割协议,能效根据功率分割因子和传输功率进行优化。首先,建立了基于swipt的全双工中继协同系统模型。然后,证明了能量效率公式是关于功率分裂因子的凸函数,得到了最优功率分裂因子。同时,本文研究了通过优化源传输功率来提高系统能效的方案。在此基础上,提出了一种基于迭代的联合优化算法,对功率分割因子和传输功率进行联合优化。最后,仿真结果验证了所提优化算法的有效性。
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引用次数: 3
Electromagnetic Side Channel Attack against Embedded Encryption Chips 针对嵌入式加密芯片的电磁侧信道攻击
Pub Date : 2019-10-01 DOI: 10.1109/ICCT46805.2019.8947185
Wenhai Zhou, Fan-tong Kong
Correlative electromagnetic side channel attack (CEMA) is a common and effective method in side channel attacks. However, a large amount of data acquisition and processing restricts the time of key cracking. This paper proposes a fast side channel attack method, which encrypts the selected plaintexts and filters the collected electromagnetic data on frequency domain, and then performs CEMA analysis. Finally, only 150 pieces of electromagnetic data are used to successfully crack all the keys of the advanced encryption standard (AES) cryptographic algorithm, and the cracking time is reduced to 1/50 of the traditional method.
相关电磁侧信道攻击(CEMA)是一种常见而有效的侧信道攻击方法。然而,大量的数据采集和处理限制了密钥破解的时间。本文提出了一种快速侧信道攻击方法,该方法对选定的明文进行加密,对采集到的电磁数据进行频域滤波,然后进行CEMA分析。最后,仅利用150条电磁数据就成功破解了高级加密标准(AES)加密算法的全部密钥,破解时间缩短为传统方法的1/50。
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引用次数: 3
In-vehicle CAN Bus Anomaly Detection Algorithm Based on Linear Chain Condition Random Field 基于线性链条件随机场的车载CAN总线异常检测算法
Pub Date : 2019-10-01 DOI: 10.1109/ICCT46805.2019.8947020
T. Kai, Zhongwei Li, Jiang Wenqi, Guan Yadong, Weiming Tong
Aiming at solving of missing and false alarm in anomaly detection of In-vehicle CAN communication, which only detects a single CAN message but ignores the correlation among multiple messages, an anomaly detection algorithm of vehicular CAN bus based on linear chain conditional random field (Linear-CRF) is proposed in this paper. Based on L-BFGS (Limited-memory BFGS) learning algorithm, the double-contour modes of Linear-CRF normal model and anomaly model are constructed respectively. The algorithm of message anomaly detection based on Linear-CRF model is elaborated in detail. The proposed anomaly detection algorithm is simulated and analyzed. The simulation results show that the proposed algorithm can effectively identify the relevance of the context content of the message, and effectively improve the detection accuracy of the In-vehicle CAN bus anomaly message.
针对车载CAN通信异常检测中只检测单个CAN消息而忽略多个CAN消息之间相关性的漏报和虚警问题,提出了一种基于线性链条件随机场(linear - crf)的车载CAN总线异常检测算法。基于L-BFGS (Limited-memory BFGS)学习算法,分别构建了Linear-CRF正态模型和异常模型的双轮廓模式。详细阐述了基于Linear-CRF模型的消息异常检测算法。对所提出的异常检测算法进行了仿真和分析。仿真结果表明,该算法能有效识别出消息上下文内容的相关性,有效提高了车载can总线异常消息的检测精度。
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引用次数: 0
A Low Complexity Joint User Grouping and Resource Allocation Algorithm in Massive MIMO Systems 大规模MIMO系统中一种低复杂度联合用户分组与资源分配算法
Pub Date : 2019-10-01 DOI: 10.1109/ICCT46805.2019.8947088
Xuan Yang, Shuming Zhang, Bo Gao, Jingjing Cao
In the downlink user grouping of multiuser massive MIMO systems, the difference of packet sizes between users assigned to the same group may cause a waste of resource block (RB), which deteriorates the overall system throughput. In this paper, an algorithm with rather low complexity is proposed combining user grouping with resource allocation. Specifically, we group users in terms of each RB. In the process of user grouping on each RB, we obtain a candidate set which is much smaller than the original user set according to the user correlation to reduce the algorithm complexity. Users are assigned to the same group (i.e., RB) with objective to reducing multiuser interference. The user grouping in a RB is finished after this RB is completely allocated to its users. The proposed algorithm ensures that users with larger packets can be assigned to more groups (i.e., more RBs) while users with smaller packets are assigned to less groups. Finally, compared with other existed algorithms, the advantages of the proposed algorithm in system throughput and fairness are validated by simulations.
在多用户大规模MIMO系统的下行用户分组中,同一组用户之间的分组大小差异可能会造成资源块(resource block, RB)的浪费,从而降低系统的整体吞吐量。本文将用户分组与资源分配相结合,提出了一种复杂度较低的算法。具体来说,我们根据每个RB对用户进行分组。在对每个RB上的用户进行分组的过程中,根据用户的相关性得到一个比原始用户集小得多的候选集,以降低算法的复杂度。用户被分配到同一组(即RB),目的是减少多用户干扰。将RB完全分配给用户后,RB中的用户分组就结束了。该算法保证了拥有较大数据包的用户被分配到更多的组(即更多的RBs),而拥有较小数据包的用户被分配到更少的组。最后,通过仿真验证了该算法在系统吞吐量和公平性方面的优势。
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引用次数: 1
A Novel Method Based on Optical Flow Combining with Wide Residual Network for Fall Detection 基于光流结合宽残差网络的跌落检测新方法
Pub Date : 2019-10-01 DOI: 10.1109/ICCT46805.2019.8947120
Xi Cai, Suyuan Li, Xinyu Liu, Guang Han
Fall is an abnormal activity event in daily life, which is becoming a major cause of accidental death for the elderly. The purpose of fall detection is to minimize serious consequences and negative impacts after falling. Recently, most conventional vision-based fall detection methods mainly rely on hand-crafted features, which is inclined to be influenced by noises, etc. In this paper, a novel method is proposed to detect fall event during a video sequence by combining optical flow and wide residual network. The wide residual network contains fewer layers and achieves the same performance as residual network, which can make the neural network train faster. In addition, to model the video motion, we adopt optical flow images as input to the wide residual network. And finally, softmax classifier is utilized to distinguish fall event. The experimental results also confirm the fact that the proposed algorithm can achieve a reliable accuracy.
跌倒是老年人日常生活中的异常活动事件,正成为老年人意外死亡的主要原因之一。跌倒检测的目的是尽量减少跌倒后的严重后果和负面影响。目前,传统的基于视觉的跌倒检测方法主要依赖于手工制作的特征,容易受到噪声等因素的影响。本文提出了一种结合光流和宽残差网络检测视频序列中跌落事件的新方法。宽残差网络包含的层数更少,且能达到与残差网络相同的性能,使神经网络训练速度更快。此外,为了对视频运动进行建模,我们采用光流图像作为宽残差网络的输入。最后,利用softmax分类器对坠落事件进行识别。实验结果也证实了该算法能够达到可靠的精度。
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引用次数: 5
The Joint Allocation of Spectrum Resources With Power Control in Ultra Dense Networks 超密集网络中具有功率控制的频谱资源联合分配
Pub Date : 2019-10-01 DOI: 10.1109/ICCT46805.2019.8947261
Qiaoshou Liu, Zhong-pei Zhang
Ultra-dense networks is an effective technology to increase the network capacity by deploying a large number of small base stations. But, in cellular downlink networks, the inter-cell interference deteriorates rapidly with the increase of small base station (SBS) density. How to manage and coordinate inter-cell interference is a hot research topic in 5G wireless communication system. In this paper, we assume that each user-equipment tagged with its closest SBS (the nearest SBS in distance) and all other SBSs using the same frequency spectrum resources simultaneously act as interferers. We propose our model based on Poisson point process and coordinate the interference to improve the signal-to- interference ratio by joint allocation of spectrum resources with power control between the first and second closest SBSs of each UE. The simulation results show the coverage probability is greatly improved with our allocation algorithm.
超密集网络是通过部署大量小型基站来增加网络容量的有效技术。但在蜂窝下行网络中,小区间干扰随着小基站密度的增加而迅速恶化。如何管理和协调小区间干扰是5G无线通信系统中的一个研究热点。在本文中,我们假设每个用户设备都以其最近的SBS(距离上最近的SBS)标记,并同时使用相同频谱资源的所有其他SBS作为干扰。我们提出了基于泊松点过程的模型,并通过在每个终端的第一和第二最接近的SBSs之间通过功率控制联合分配频谱资源来协调干扰,以提高信噪比。仿真结果表明,该分配算法大大提高了覆盖概率。
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引用次数: 0
Design of X-band 4×4 On-chip Butler Matrix Based on 0.18µm SiGe BiCMOS Process 基于0.18µm SiGe BiCMOS工艺的x波段4×4片上管家矩阵设计
Pub Date : 2019-10-01 DOI: 10.1109/ICCT46805.2019.8947045
Xiaohui Tao, Rui Cao, Zhuang Li, Dawei Rong, Lihui Jiang, Liguo Sun
In this paper, an X-band 4×4 on-chip butler matrix is presented based on 0.18$mu$m SiGe BiCMOS process. The matrix, implemented by lumped components such as inductors and capacitors, shows broadband performance with the size less than 2mm2. The measurement results are consistent with simulation ones.
本文提出了一种基于0.18$mu$m SiGe BiCMOS工艺的x波段4×4片上管家矩阵。该矩阵由电感和电容器等集总元件实现,具有小于2mm2的宽带性能。测量结果与仿真结果吻合较好。
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引用次数: 0
A Stochastic Ray-Tracing Approach for Maritime Line-of-Sight Channel Modeling 海上视距航道建模的随机光线追踪方法
Pub Date : 2019-10-01 DOI: 10.1109/ICCT46805.2019.8947033
Rui Ding, Jue Wang, Ye Li, Li You, Qiang Sun
In this paper, we propose a modeling approach for maritime wireless channels based on a stochastic ray-tracing approach. Taking into consideration the line-of-sight (LOS) path, the specular reflection path, and the diffuse reflection paths from the sea surface, the maritime wireless fading channel is modeled by combining all the propagation paths arrived at the receiver point. In contrast to the conventional ray-tracing approaches where the propagation environments (and hence, the rays) are considered to be fixed, our stochastic ray-tracing approach assumes varying propagation environment caused by practical factors such as the sea wave. In this case, the locations of the reflection and receiver points randomly vary following a stochastic process. Based on the proposed channel model, we further investigate the deep fading effect in maritime wireless propagations caused by destructive combination of sparse rays. We show by simulations that the role of sea wave has two sides. Specifically, the sea wave is beneficial to compensate the deep fading in the areas where the LOS path and the specular reflection path have been destructively combined, while on the other hand it might induce more outage in the areas where deep fading has not occurred.
在本文中,我们提出了一种基于随机射线追踪方法的海上无线信道建模方法。考虑海面的视距路径、镜面反射路径和漫反射路径,将到达接收点的所有传播路径组合在一起,建立了海上无线衰落信道模型。在传统的光线追踪方法中,传播环境(因此,光线)被认为是固定的,与之相反,我们的随机光线追踪方法假设由实际因素(如海浪)引起的传播环境变化。在这种情况下,反射点和接收点的位置随随机过程随机变化。基于所提出的信道模型,我们进一步研究了稀疏射线破坏性组合在海上无线传播中的深度衰落效应。模拟结果表明,海浪的作用具有两面性。具体来说,在LOS路径和镜面反射路径破坏性结合的区域,海浪有利于补偿深度衰落,而在深度衰落未发生的区域,海浪则可能导致更多的中断。
{"title":"A Stochastic Ray-Tracing Approach for Maritime Line-of-Sight Channel Modeling","authors":"Rui Ding, Jue Wang, Ye Li, Li You, Qiang Sun","doi":"10.1109/ICCT46805.2019.8947033","DOIUrl":"https://doi.org/10.1109/ICCT46805.2019.8947033","url":null,"abstract":"In this paper, we propose a modeling approach for maritime wireless channels based on a stochastic ray-tracing approach. Taking into consideration the line-of-sight (LOS) path, the specular reflection path, and the diffuse reflection paths from the sea surface, the maritime wireless fading channel is modeled by combining all the propagation paths arrived at the receiver point. In contrast to the conventional ray-tracing approaches where the propagation environments (and hence, the rays) are considered to be fixed, our stochastic ray-tracing approach assumes varying propagation environment caused by practical factors such as the sea wave. In this case, the locations of the reflection and receiver points randomly vary following a stochastic process. Based on the proposed channel model, we further investigate the deep fading effect in maritime wireless propagations caused by destructive combination of sparse rays. We show by simulations that the role of sea wave has two sides. Specifically, the sea wave is beneficial to compensate the deep fading in the areas where the LOS path and the specular reflection path have been destructively combined, while on the other hand it might induce more outage in the areas where deep fading has not occurred.","PeriodicalId":306112,"journal":{"name":"2019 IEEE 19th International Conference on Communication Technology (ICCT)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124422210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
SER Performance of Compact MIMO Systems with Receive Matching Networks in Nakagami-m Fading Channel Nakagami-m衰落信道中接收匹配网络紧凑型MIMO系统的SER性能
Pub Date : 2019-10-01 DOI: 10.1109/ICCT46805.2019.8947202
Yanhua Zhang, Yueheng Li, T. Xue
Compact MIMO (multiple-input multiple-output) systems will inevitably introduce the element mutual coupling, which unfortunately decreases the whole system’s performance. Different receive S-parameter matching networks were already designed to combat this adverse effect, and interestingly, the related performance evaluation indexes of these work are mainly subject to channel capacity and signal correlation. In this paper, the symbol error rate (SER) of the compact MIMO systems with various S-parameter matching networks are studied in a Nakagami-m fading environment, including detailed derivation of the closed-form SER formula based on moment generating function (MGF) method and its corresponding numerical simulations. The results show that the SERs of the compact MIMO systems with common matching networks are greatly reduced especially under the optimum matching in the small antenna spacing case.
紧凑型MIMO(多输入多输出)系统不可避免地会引入元件相互耦合,从而降低系统的整体性能。已经设计了不同的接收s参数匹配网络来对抗这种不利影响,有趣的是,这些工作的相关性能评估指标主要取决于信道容量和信号相关性。本文研究了具有不同s参数匹配网络的紧凑MIMO系统在Nakagami-m衰落环境下的符号误码率(SER)问题,详细推导了基于矩生成函数(MGF)方法的闭式误码率公式,并进行了相应的数值模拟。结果表明,采用普通匹配网络的紧凑型MIMO系统在天线间距较小的情况下,尤其是在最佳匹配情况下,其SERs显著降低。
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引用次数: 0
Proposal and Preliminary Fall-related Activities Recognition in Indoor Environment 室内环境中与跌倒有关的活动识别的建议及初步研究
Pub Date : 2019-10-01 DOI: 10.1109/ICCT46805.2019.8947044
H. Ghayvat, Sharnil Pandya, Ashish Patel
Falls are a noteworthy reason for grievances and deaths in elderlies. Notwithstanding when no damage happens, about majority of elderlies are identity unfit to get up without help. The expanded time of lying on the floor frequently prompts restorative complications, including muscle impairment, lack of hydration, unease, and trepidation of falling. Here, a fall sensing unit is accounted that is affixed to a subjects’ midsection and incorporates a 3-axis accelerometer, 3-axis gyroscope, a multiplexer, a filter, and a microcontroller. Moreover, the fall detection system also used IMU data on the mobile phone. Change in angular velocity, noise cancelation, and the ADC transformation was achieved by the hardware. The handled flag is conveyed to a PC through ZigBee and processed through the dedicated programming. Fall sensing approach comprised feature selection, mining and a machine learning calculation for characterizing the parameters. In this paper, we propose a fall discovery calculation which is shaped by feature selection, discovery, mining and handling. An aggregate of six highlights was ascertained in feature selection. Four of them are identified with the gravity vector which is extricated from accelerometer information by utilizing the low-pass filter. As falling generally happens in a vertical course, the gravity-related characteristics are helpful. The system also uses one of the ambient sensing units, which is a movement sensing unit. The PIR sensor-based movement sensing unit is used to enhance the accuracy of fall detection activity. The feature from the movement sensing unit substantially reduced the false alarms.
跌倒是老年人不满和死亡的一个值得注意的原因。尽管没有发生伤害,但大约大多数老年人都不适合在没有帮助的情况下站起来。躺在地板上的时间延长,经常引起恢复性并发症,包括肌肉损伤、缺乏水分、不安和摔倒时的恐惧。在这里,一个跌倒传感单元被认为是贴在受试者的腹部,并包含一个3轴加速度计、3轴陀螺仪、一个多路复用器、一个滤波器和一个微控制器。此外,跌落检测系统还使用了手机上的IMU数据。通过硬件实现角速度变化、噪声消除和ADC变换。处理后的标志通过ZigBee传送到PC机,并通过专用编程进行处理。跌落感知方法包括特征选择、挖掘和表征参数的机器学习计算。本文提出了一种由特征选择、发现、挖掘和处理组成的秋季发现计算方法。在特征选择中确定了6个亮点的总和。利用低通滤波器从加速度计信息中提取重力矢量来识别其中的4个。由于下落通常是垂直的,因此与重力有关的特性是有帮助的。该系统还使用了其中一个环境传感单元,这是一个运动传感单元。基于PIR传感器的运动传感单元用于提高跌倒检测活动的准确性。运动传感单元的特性大大减少了误报。
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引用次数: 3
期刊
2019 IEEE 19th International Conference on Communication Technology (ICCT)
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