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2019 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SYNCHROINFO)最新文献

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Nonlinear Filtration in the Problem of Joint Estimation of Channel Factors and OFDM Signal Distortion Arising in Direct Conversion Receiver 直接转换接收机中信道因素联合估计和OFDM信号失真问题中的非线性滤波
N. E. Poborchaya
A combined algorithm for joint estimation the distortions of the OFDM signal and channel factors is proposed in the article. The algorithm is based on two procedures: 1) estimating the generalized channel factors using a polynomial spline approximation, the least squares method and finding the signal distortion estimates for them, 2) a nonlinear filtering algorithm to refine the parameters values such as DC components and frequency offset. The algorithm operates on two reference OFDM symbols under conditions of a priori uncertainty regarding phase noise and observation noise, and also allows to increase noise immunity and reduce computational complexity, as compared with the case of using only procedure 1).
提出了一种联合估计OFDM信号失真和信道因子的算法。该算法基于两个步骤:1)使用多项式样条近似和最小二乘法估计广义信道因子并找到它们的信号失真估计;2)使用非线性滤波算法来细化直流分量和频率偏移等参数值。该算法在相位噪声和观测噪声的先验不确定性条件下对两个参考OFDM符号进行操作,与仅使用过程1)相比,可以提高噪声抗扰度,降低计算复杂度。
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引用次数: 2
Fading Channel Prediction for 5G 5G衰落信道预测
A. Konstantinov, A. Pestryakov
The priority purposes of the 5G network are increasing throughput and increasing spectral efficiency. For this purposes, a number of tools have been developed, the realization of which full potential is possible only if there is feedback from the User Equipment (UE) - Channel State Information (CSI). However, in conditions of fading in the radio channel, there is a problem of ensuring the relevance of the indicators included in the CSI for subsequent data transmission in downlink. This problem has the name of the CSI-Ageing or CSI-Outdating. There are a number of methods for compensating the CSI-Ageing. Today, the most effective method to minimize the impact of this effect is prediction. There are many developed algorithms and a lot of research on this topic. However, there are only a few complete reviews these algorithms. This paper has the main purpose of conducting such a review and analysis in order to identify the most promising algorithms for further research.
5G网络的首要目的是提高吞吐量和提高频谱效率。为此目的,已经开发了许多工具,只有在用户设备(UE) -信道状态信息(CSI)反馈的情况下,才能充分发挥其潜力。然而,在无线电信道衰落的情况下,如何确保CSI中包含的指标与后续下行链路数据传输的相关性是一个问题。这个问题被称为csi老化或csi过时。有许多补偿csi老化的方法。今天,将这种影响最小化的最有效方法是预测。在这个主题上有许多成熟的算法和大量的研究。然而,对这些算法的完整评述却很少。本文的主要目的是进行这样的审查和分析,以确定最有前途的算法进行进一步的研究。
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引用次数: 6
Chaotic Systems Based Pseudo-Random Signal Generators Realized Over a Galois Finite Field 基于混沌系统的伪随机信号发生器在伽罗瓦有限域上的实现
S. Loginov, M. Zuev
The statistical characteristics and results of the FIPS 140–2 tests of a new class of pseudo-random signal generators based on the modified Lorentz, Chua, Dmitriev-Kislov and Anischenko-Astakhov systems over the finite Galois field are considered. The estimates of the signal correlation intervals, as well as histograms of the probability distributions of the generated numbers, are obtained. Evaluation of the compliance of binary sequences formed on the basis of systems with the requirements of the FIPS 140–2 test with variation of systems parameters was obtained. The results of the work can be used in the construction of communication systems with broadband signals, modeling and cryptography.
考虑了一类基于改进的Lorentz、Chua、Dmitriev-Kislov和Anischenko-Astakhov系统的伪随机信号发生器在有限伽罗瓦场上的统计特性和FIPS 140-2测试结果。得到了信号相关区间的估计,以及生成数的概率分布的直方图。对满足FIPS 140-2试验要求的系统所形成的二值序列进行了随系统参数变化的顺应性评价。研究结果可用于宽带通信系统的构建、建模和密码学。
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引用次数: 3
Dynamic and Noise Properties of PLL Circuits in GNSS Receivers GNSS接收机锁相环电路的动态和噪声特性
M. Zhodzishsky, V. Veitsel, R. Kurynin, A. Veitsel
Different dynamic and noise characteristics of hardware-software systems of phase lock loops (PLL) within global navigation satellite systems (GNSS) receivers capable of operating under strong dynamic external effects have been considered in the present paper. Most operations in hardware-software systems are performed in processor at relatively low rate of time discretization, the signals of many satellite channels being successively processed by the processor. In the other, hardware part of the receiver, its own simultaneously operating channels correspond to each PLL system. A theoretical analysis of the considered PLL systems has been carried out by methods based on z-transformations. Then, these PLL systems were compared to each other with the help of simulation modeling in conditions of different dynamic impacts. In conclusion, some recommendations on selection of PLL systems of one or other type depending on GNSS receiver user's requirements have been given. These recommendations reflect the authors' previous experience in developing and designing commercial GNSS receivers.
本文研究了全球导航卫星系统(GNSS)接收机中锁相环(PLL)硬件软件系统在强动态外部效应下的不同动态和噪声特性。在硬件软件系统中,大多数操作都是在处理器中以较低的时间离散率进行的,多个卫星信道的信号依次由处理器处理。另一方面,接收机的硬件部分,它自己的同步操作通道对应于每个锁相环系统。采用基于z变换的方法对所考虑的锁相环系统进行了理论分析。然后,通过仿真建模,对不同动态冲击条件下的锁相环系统进行了比较。最后,根据GNSS接收机用户的要求,给出了选择一种或另一种锁相环系统的建议。这些建议反映了作者以前在开发和设计商用GNSS接收机方面的经验。
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引用次数: 1
Fault-Tolerant System of Automatic Deployment of Mobile Radio Stations 移动无线电台自动部署容错系统
S. Palavenia, A. Salauyou, Yuliya Duinova, M. Popova
In this article a block diagram of an automated deployment system is considered. A structural-functional indicator of the intensity of the use of functional elements of an automated deployment system is presented
在本文中,将考虑一个自动部署系统的框图。提出了自动部署系统中功能要素使用强度的结构-功能指标
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引用次数: 0
Tunable Complex Band-Pass Filter on Switchable Capacitors 可开关电容器上的可调谐复杂带通滤波器
Y. A. Grebenko, Aung Ko Min
The article is devoted to the development of methods for calculating complex filters on switchable capacitors using analog prototypes. Analog and digital complex filters are described in detail in the technical literature. In recent years also appeared work devoting on the calculation and implementation of complex filters on switchable capacitors. One of the methods of calculating filters on switchable capacitors is the method of converting an active RC filter by replacing resistors with switchable capacitors. The use of identical complex links on inverting integrators allows to simplify the calculation of the block diagram of an analog complex band-pass filter with a high-order LF-prototype. It also becomes possible to restructure the central frequency and bandwidth of a band-pass complex filter by synchronously changing the parameters of identical complex links. In this article describes the complex link's scheme of inverting non-ideal integrators implemented on two operational amplifiers. Offers the method of calculation of complex bandpass filters based on complex links, implemented by using switchable capacitors. In the schemes of complex band-pass filters on switched capacitors, it is possible to independently adjust the central frequency and bandwidth by changing the nominal values of identical capacitors in the links or by changing the corresponding switching frequency. As an example, a schematic diagram of a complex band-pass filter with 2nd order Butterworth LF prototype has been developed. The first model is implemented on the basis of summators and analog complex links. The second model is implemented on the basis of summators and complex links containing operational amplifiers and switchable capacitors. Circuit simulation of complex filters was carried out in the Micro-Cap program. In the frequency domain compared the values of frequency response curve of both filters at different frequencies. These values are almost the same. The simulation results confirm the performance of the proposed method for calculating complex band-pass filters on switchable capacitors and confirm the possibility of independent tuning of the center frequency and bandwidth.
本文致力于开发利用模拟原型计算可开关电容器上复杂滤波器的方法。模拟和数字复合滤波器在技术文献中有详细的描述。近年来也出现了对可开关电容器上复杂滤波器的计算和实现的研究。计算可开关电容滤波器的方法之一是用可开关电容代替电阻来转换有源RC滤波器。在反相积分器上使用相同的复杂链路可以简化具有高阶lf原型的模拟复杂带通滤波器的框图计算。通过同步改变相同复合链路的参数,重构带通复合滤波器的中心频率和带宽也成为可能。本文介绍了在两个运放上实现非理想积分器反相的复杂链路方案。给出了一种基于可开关电容的复杂链路的复杂带通滤波器的计算方法。在开关电容上的复杂带通滤波器方案中,可以通过改变链路中相同电容的标称值或改变相应的开关频率来独立调节中心频率和带宽。以二阶巴特沃斯低频样机为例,给出了复杂带通滤波器的原理图。第一个模型是基于求和和模拟复杂链路实现的。第二种模型是基于和子和包含运算放大器和可切换电容器的复杂链路实现的。在Micro-Cap程序中对复杂滤波器进行了电路仿真。在频域比较了两种滤波器在不同频率下的频响曲线值。这些值几乎是相同的。仿真结果验证了该方法计算可切换电容上复杂带通滤波器的性能,并证实了中心频率和带宽独立调谐的可能性。
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引用次数: 0
Interpretation of Intelligent Transport Systems Data in Moscow for Bernoulli Approximation of Deterministic-Stochastic Model 莫斯科智能交通系统数据的确定性-随机模型伯努利近似解释
A. Bugaev, A. Tatashev, M. Yashina, O. Lavrov, E. A. Nosov
The BigData technology development allows to measure traffic flows on highways in detail. The flow dynamics depends on many parameters, in particular social and economical parameters. Based on the results of measurements on highways in Deutschland, B.S. Kerner has concluded that the known mathematical traffic models are not always adequate. The congested flows are very unstable, and, therefore, it is important to know the real function of state, which shows the dependence of the flow intensity on the density. In Moscow, an intellectual transport system has been created. This system collects the data on the flow characteristics. In this paper, an algorithm has been developed such that this algorithm calibrates a traffic mathematical model. This model is based on the deterministic-stochastic approach and concepts of synchronous or asynchronous exclusion processes. The model parameters are set based on data of measurements made on a section of Leningradsky prospect in Moscow with the intellectual transport system SS125 - Traffic Sensor Smartsensor Wavetronix. Data of year 2011 are not very accurate. However, these data contain information on the intensity, density, velocity and vehicle types for any minute segment during a day. The data of measurements made in 2019 are more accurate but only total traffic intensity in each direction were measured. The algorithm, developed in this paper, is used for the estimation of the traffic density and velocity dynamics based on the data of 2019 year. We consider a version of homogeneous flow model and two versions of heterogeneous flow model. One of these versions is a new model.
大数据技术的发展可以详细测量高速公路上的交通流量。流动动力学取决于许多参数,特别是社会和经济参数。根据对德国高速公路的测量结果,B.S. Kerner得出结论,已知的数学交通模型并不总是合适的。拥塞流是非常不稳定的,因此,了解真实的状态函数是很重要的,它显示了流强度与密度的依赖关系。莫斯科建立了一个智能交通系统。该系统对流量特性数据进行采集。本文开发了一种算法,利用该算法标定交通数学模型。该模型基于确定性-随机方法和同步或异步排除过程的概念。模型参数是根据莫斯科列宁格勒斯基勘探区的测量数据设置的,测量数据使用的是智能交通系统SS125 - Traffic Sensor Smartsensor Wavetronix。2011年的数据不是很准确。然而,这些数据包含了一天中任何一分钟的强度、密度、速度和车辆类型的信息。2019年的测量数据更准确,但只测量了每个方向的总交通强度。本文开发的算法基于2019年的数据,用于估计交通密度和速度动态。我们考虑了一个版本的均匀流模型和两个版本的非均匀流模型。其中一个版本是一个新模型。
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引用次数: 4
Non-Harmonic Spectral Analysis of Multiscroll Systems with Dynamic Chaos 动态混沌多涡旋系统的非谐波谱分析
V. Afanasyev, S. Loginov
The paper investigates non-harmonic spectrums of a non-linear multiscroll system. These spectrums have been obtained based on the representation of signal realizations as impulse random processes. Histograms of parameters of nonharmonic representation and two-parameter spectrums of signals are shown. Signals spectrums have been classified. Opportunities for distinguishing signal types of multiscroll systems have been defined. The directions for the further use of multiscroll systems in confidential communication have been proposed.
研究了非线性多涡旋系统的非谐波谱。这些频谱是基于信号实现作为脉冲随机过程的表示而得到的。给出了非谐波表示的参数直方图和信号的双参数谱。信号频谱已被分类。已经定义了区分多涡旋系统信号类型的机会。提出了多卷轴系统在保密通信中的进一步应用方向。
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引用次数: 5
All-Metal Slow-Wave-Structure of Coaxial-Radial Line Type for Powerful Multibeam TWT 强多波束行波管同轴-径向线型全金属慢波结构
A. Kasatkin, S. Presnyakov, N. Kravchenko, S. Mukhin
The subject of consideration of this work is the development of the design, algorithm and program for calculating the dispersion characteristics of the coaxial-radial line (CRL). The selected design of the CRL allows to optimize the coupling impedance and the dispersion of the SWS.
本文研究的主题是计算同轴-径向线色散特性的设计、算法和程序的发展。所选择的CRL设计允许优化耦合阻抗和SWS的色散。
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引用次数: 2
The Analysis of Synchronization Performance in TDM-Based and Packet-Based Transmission 基于tdm和分组传输的同步性能分析
N. Biriukov, N. Triska, M. L. Schwartz
The article presents some results based on the probabilistic approach, quality assessment of synchronous and asynchronous transport technologies in the plesiochronous network mode. In particular, the results of slippage frequency evaluation in the network elements and their accumulation in the reference connections recommended by ITU-T, as well as the estimation of packet collisions and delay accumulation depending on the load (traffic) in the transmission path are presented. The results were confirmed by computer simulation and measurements.
本文给出了基于概率方法对准同步网络模式下同步和异步传输技术进行质量评估的一些结果。特别是给出了ITU-T推荐的网元滑动频率评估结果及其在参考连接中的累积,以及根据传输路径中负载(流量)对分组冲突和延迟累积的估计。结果经计算机模拟和实测验证。
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引用次数: 2
期刊
2019 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SYNCHROINFO)
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