Novel Sum-of-Sinusoids Simulation Channel Modeling for 6G Multiple-Input Multiple-Output Vehicle-to-Everything Communications

In this paper,a statistical cluster-based simulation channel model with a finite number of sinusoids is proposed for depicting the multiple-input multiple-output(MIMO)communications in vehicleto-everything(V2X)environments.In the proposed sum-of-sinusoids(SoS)channel model,the waves that emerge from the transmitter undergo line-of-sight(LoS)and non-line-of-sight(NLoS)propagation to the receiver,which makes the model suitable for describing numerous V2X wireless communication scenarios for sixth-generation(6G).We derive expressions for the real and imaginary parts of the complex channel impulse response(CIR),which characterize the physical propagation characteristics of V2X wireless channels.The statistical properties of the real and imaginary parts of the complex CIRs,i.e.,autocorrelation functions(ACFs),Doppler power spectral densities(PSDs),cross-correlation functions(CCFs),and variances of ACFs and CCFs,are derived and discussed.Simulation results are generated and match those predicted by the underlying theory,demonstrating the accuracy of our derivation and analysis.The proposed framework and underlying theory arise as an efficient tool to investigate the statistical properties of 6G MIMO V2X communication systems.

Communication simulation of on-board diagnosis network in high-speed Maglev trains

The on-board diagnosis network is the nervous system of high-speed Maglev trains, connecting all controller sensors, and corresponding devices to realize the information acquisition and control. In order to study the on-board diagnosis network＇s security and reliability, a simulation model for the on-board diagnosis network of high-speed Maglev trains with the optimal network engineering tool （OPNET） was built to analyze the network＇s performance, such as response error and bit error rate on the network load, throughput, and node-state response. The simulation model was verified with an actual on-board diagnosis network structure. The results show that the model results obtained are in good agreement with actual system performance and can be used to achieve actual communication network optimization and control algorithms.

Mathematical simulations of the galvanic coupling intra-body communication by using the transfer function method

The galvanic coupling intra-body communication （IBC） was mathematically simulated based on the proposed transfer function. Firstly, a galvanic coupling IBC circuit model was developed and the corresponding parameters were discussed. Secondly, the transfer function of the galvanic coupling IBC was derived and proposed. Finally, the signal attenuation characteristics of the galvanic coupling IBC were measured along different signal transmission paths of actual human bodies, while the corresponding mathematical simulations based on the proposed transfer function were carried out. Our investigation showed that the mathematical simulation results coincided with the measured results over the frequency range of 100kHz to 5MHz, which indicated that the proposed transfer function could be useful for theoretical analysis and application of the galvanic coupling IBC.

STUDY AND COMPUTER SIMULATION OF AN ADAPTIVE STATISTIC MODEL FOR MOBILE COMMUNICATION CHANNEL

An adaptive statistic model for mobile communication channel is studied and simulated in this paper. According to the model parameters, an error sequence describing the long burst error characteristics of the mobile communication channel is generated on a computer. A test method using threshold technique is presented to verify the accuracy of the adaptive channel model.

Dual-Channel Communication of Column Plasma Antenna Excited by a Surface Wave——Actualization and Simulation of Radiation Pattern

Along with the introduction of the concept of dual-channel communication,we utilized the finite-difference time-domain（FDTD） method to simulate and measure the radiation pattern under certain plasma densities and plasma collision frequencies.Results show that under certain settings,the radiation pattern of a plasma antenna resembles that of a metallic antenna.In contrast to a metallic antenna,a plasma antenna possesses other functionalities,such as dynamic reconfiguration and digital controllability.The data from simulation are similar to the measurement results,indicating that column plasma antenna can realize dual-channel communication.This work confirms the viability of realizing dual-channel communication by column plasma antenna,which adds a new but promising method for modern intelligent communication.

Review of the Modeling, Simulation and Implement of Intra-body Communication

Intra-body communication (IBC) is a technology using the human body as a transmission medium for electrical signals. Compared with the short distance wireless communication technologies, it has several novel characteristics. The modeling, simulation and implement of intra-body communication are reviewed. Firstly, the transfer function of the galvanic coupling IBC is deduced, and the in vivo measurements results and the corresponding mathematical simulations results based on the proposed transfer function are discussed. Secondly, a finite-element method for modeling the whole human body is introduced, and the simulation results of the galvanic coupling IBC based on the whole human body and the corresponding in vivo measurement results are discussed. Finally, the implement methods of the intra-body communication as well as a novel IBC system based on Mach-Zehnder EO modulator are introduced and analyzed, while some conclusions are achieved.

Numerical Simulation of Dual-Channel Communication of Column Plasma Antenna Excited by a Surface Wave

This paper focuses on the application of plasma as wireless antenna. In order to reveal the radiation characteristics of column plasma antenna, we chose the finite-difference time- domain （FDTD） numerical analysis method to simulate radiation impedance and efficiencies of each channel for a few sets of plasma densities and plasma collision frequencies. Simulation results demonstrate that a plasma antenna shares similar characteristics with a metallic antenna in radiation impedance and efficiency of each channel when an appropriate setting is adopted. Unlike a metallic antenna, a plasma antenna is capable of realizing such functions as dynamic reconfiguration, digital control and dual-channel communication. Thus it is possible to carry out dual-channel communication by plasma antenna, indicating a new path for modern intelligent communication.

Evaluation of undergraduate students’nursing assessment and communication skills through an objective structured clinical examination within a high-fidelity simulation using a student-simulated patient

Objective:To evaluate nursing students’assessment and communication skills through an objective structured clinical examination(OSCE)within a high-fidelity simulation using a student-simulated patient(SSP)and analyze the validity,reliability,degree of difficulty,and discriminability of the OSCE.Methods:A descriptive study was conducted at one nursing school in Macao.All scenarios were designed using a high-fidelity simulator combined with SSPs.A convenience sample of 54 baccalaureate nursing students completed the OSCE.The nursing assessment OSCE checklist(NAOC)and the communication evaluation rubric(CER)were used as observational measurements with three-point Likert scales(2=Achieved,1=Partly achieved,0=Not completed/Incorrect).Results:Difficulty coefficients of the exam were 0.63 for nursing assessment skills and 0.56 for communication skills.The discrimination index of the majority items of the NAOC(86.4%)was>0.20,showing a better to good discriminability.The items of the CER had satisfactory indexes of item discrimination(from 0.38 to 0.84).Students received high scores in conducting blood oxygen saturation and cardiac and lung auscultation but low scores in vomiting and diarrhea assessment.Students presented good communication skills in eye contacting and listening,but culture assessment needs to be improved.The students with experiences in simulation or simulated patient(SP)interactions had better assessment and communication skills than students without those experiences.There was a positive relationship between nursing assessment and communication skills(r=0.67,P=0.000).Conclusions:SSPs were involved in enhancing the realism of interactions in simulated scenarios.Nursing students can conduct nursing assessments specific to patient conditions,explain the conditions to the patient,and ensure that the patient remains informed at all times of the precautions to be taken.However,students’cultural awareness and some communication skills need further training.With moderate difficulty and high discrimination index,OSCE showed satisfactory reliability and validity.

The computer simulation of the communication system that combines data and power down a common twisted wire pair

A peculiarity of control network systems is the automatic implementation mode of monitoring and control, without outside intervention in a control process. This mode imposes rigid restrictions upon transmitted data. All circulating data should comply to the defined time interval in which their reliability is definite. In other word communication has to be predictable and time-constrained in order to produce control output in time. This characteristic corresponds to concept 《determinism》 that characterizes an ability of a protocol to guarantee equivalent and opportune network access with the delay not exceeding definite time interval. For development of a deterministic and noise-resistant protocol is necessary to carry out analysis of an error model obtained by the computer simulation of an electromagnetic process in conditions of variety and intensity of interference. The formalization of the error model gives computer simulation an ability to get the error sequence directly without simulation of the electromagnetic process. The results of the simulation of an error sequence can be used for the expediency analysis of a noise-resistant encoding and the analysis of an error-correcting ability.

Literature Survey on Recent Progress in Inter-Vehicle Communication Simulations

The vehicular ad hoc network (VANET) technology based on the approved IEEE 802.11p standard and the appendant inter-vehicle communication (IVC) has the potential to dramatically change the way transportation systems work. The fundamental idea is to change the individual behavior of each vehicle by exchanging information among traffic participants to realize a cooperative and more efficient transportation system. Certainly, the evaluation of such systems is a comprehensive and challenging task in a real world test bed, therefore, simulation frameworks are a key tool to analyze IVC. Several models are needed to emulate the real behavior of a VANET in all aspects as much realistically as necessary. The intention of this survey is to provide a comprehensive overview of publications concerning IVC simulations of the year 2013 and to see how IVC simulation has changed since 2009. Based on this analysis, we will answer the following questions: What simulation techniques are applied to IVC? Which aspects of IVS have been evaluated? What has changed within five years of IVC simulations? We also take a closer look at commonly used software tools and discuss their functionality and drawbacks. Finally, we present open questions concerning IVC simulations.

Hardware-in-loop Simulation(HLS) of Homing Anti-tank Missile

The simulation techniques of hardware-in-loop simulation(HLS) of homing antitank missile based on the personal computer (PC) are discussed. The PC and MCS-96 chip controller employ A/D and D/A boards (with photoelectricity isolation) to transfer measur ment and control information about homing head, gyro and rudder and utilize the digital hand shaking board to build correct communication communication protocol. In order to satisfy the real-time requirement of HLS, this paper first simplifies the aerodynamic data file reasonably, then builds a PC software with C language. The program of the controller part is made with PL/M language. The simulation of HLS based on PC is done with the same sampling period of 10ms as that of YH-F1 and the experiment results are identical to those of digital simulation of the homing anti-tank guided missile.

通信系统仿真软件SystemView及其应用

介绍了通信系统仿真专用软件工具SystemView的主要功能和特点,讨论了SystemView在通信系统仿真中的应用,给出了仿真和分析的具体实例.

Systemview环境下的锁相环工作仿真

本文详细介绍了锁相环在 Systemview环境下的仿真实现过程 ,包括仿真模型的建立、仿真参数调整及仿真结果分析 .同时介绍了动态系统分析设计工具软件

基于SystemView的通信原理实验教学体系

针对通信原理课程实验教学的现状和存在问题,提出构建基于SystemView的实验教学体系。新实验教学体系设置了基础验证型、综合设计型和研究创新型3个层次的实验,并以正交幅度调制(QAM)的实现为例给出仿真实例。实践表明,该实验教学体系增强了学生的学习兴趣,有利于大学生的创新能力和实践能力的培养。

SystemView在《通信原理》实验课程中的应用

针对只用通信原理实验箱进行验证性实验存在的问题,提出了用软件仿真实现通信原理实验,并以一个完整的PCM系统实验为例进行详细的阐述。结果表明,仿真实验的内容灵活、设计性强,既与基本理论相一致,又能与硬件实验相互弥补,具有较大的应用价值。

QAM编解码系统的SystemView仿真实现

介绍了一种基于Windows平台对系统进行设计、仿真和分析的软件环境SystemView,分析了QAM调制原理,提出了基于SystemView平台的16QAM编解码系统的仿真方案,设计了实际仿真模型;仿真结果和分析表明,提出的方案可行,有助于对QAM系统性能的进一步研究。

基于Systemview对直扩系统的仿真及分析

Systemview是一种基于Windows平台对系统级进行设计、仿真和分析的EDA软件。它采用图形编码方式 ,提供了广泛的分析环境 ,并可以和硬件的开发工具连接起来进行仿真。用Systemview图形模块构建直扩系统 ,并用分析窗和信号计算器对直扩系统进行仿真和分析。

基于SystemView的通信原理系统软件实验设计

针对教学中"通信原理"课程实验只有硬件实验箱的验证性实验的实际情况,提出了用System-View软件平台进行通信原理课程实验教学,设计了基于SystemView的通信系统原理课程的相关实验。最后,通过一个具体的实验进行说明。

SystemView与Matlab联合仿真的研究与实现

在很多应用场合,需要联合SystemView与Matlab进行通信系统仿真。以μ律PCM编码为例提出了一种以M-LINK接口为桥梁的联合仿真方法,给出了联合仿真的流程。并通过对联合仿真输出波形出现的延迟现象进行分析,给出了仿真过程中关键参数的设置方法。仿真结果表明,这种联合仿真方法是可行的,可以应用到其它需要联合SystemView与Matlab进行复杂通信系统仿真的场合。

通信系统的SystemView软件仿真

通过仿真软件可对通信系统进行多种方案设计和参数实验,得到最佳设计方案。介绍通信系统原理用美国El-anix公司系统仿真软件SystemView仿真和分析的方法,详细阐述对通信系统的动态仿真步骤。给出2FSK调制与解调的仿真电路图及其仿真结果分析。利用该软件可直观地了解通信系统,同时系统的动态性仿真是对验证性实验的有益补充。