Interlinking Vissim and ns-3 for Connected Vehicle Simulation: Case Study of Intelligent Dilemma Zone Avoidance

The effects of realistic wireless communication are important for the modeling and evaluation of emerging connected and automated vehicle applications. This paper discusses the development of a novel closed-loop connected vehicle analysis system (CONVAS) interlinking Vissim microscopic traffic simulation and ns-3 wireless communication simulation. In CONVAS, ns-3 uses Vissim’s vehicle positions for wireless modeling and in turn Vissim uses the packet reception from ns-3 to modify vehicle behaviors. The authors propose an application for intelligent avoidance of the dilemma zone to demonstrate the use of the platform for modeling connected and automated vehicles and to illustrate the effects of communications on the application performance. A simulation experiment was conducted with a test bed for an isolated high-speed, fixed-time signalized intersection with different communication model configurations. The evaluation results showed that the effectiveness of the application as measured by successful clearing of vehicles from the dilemma zone depended greatly on performance of wireless communication.

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DSRC versus 4G-LTE for Connected Vehicle Applications: A Study on Field Experiments of Vehicular Communication Performance

Journal of Advanced Transportation ◽

10.1155/2017/2750452 ◽

2017 ◽

Vol 2017 ◽

pp. 1-10 ◽

Cited By ~ 60

Author(s):

Zhigang Xu ◽

Xiaochi Li ◽

Xiangmo Zhao ◽

Michael H. Zhang ◽

Zhongren Wang

Keyword(s):

Collision Avoidance ◽

High Speed ◽

Field Experiments ◽

Traffic Information ◽

Connected Vehicle ◽

Vehicular Communication ◽

Test Bed ◽

Traffic Sign ◽

Communication Performance ◽

4G Lte

Dedicated short-range communication (DSRC) and 4G-LTE are two widely used candidate schemes for Connected Vehicle (CV) applications. It is thus of great necessity to compare these two most viable communication standards and clarify which one can meet the requirements of most V2X scenarios with respect to road safety, traffic efficiency, and infotainment. To the best of our knowledge, almost all the existing studies on comparing the feasibility of DRSC or LTE in V2X applications use software-based simulations, which may not represent realistic constraints. In this paper, a Connected Vehicle test-bed is established, which integrates the DSRC roadside units, 4G-LTE cellular communication stations, and vehicular on-board terminals. Three Connected Vehicle application scenarios are set as Collision Avoidance, Traffic Text Message Broadcast, and Multimedia File Download, respectively. A software tool is developed to record GPS positions/velocities of the test vehicles and record certain wireless communication performance indicators. The experiments have been carried out under different conditions. According to our results, 4G-LTE is more preferred for the nonsafety applications, such as traffic information transmission, file download, or Internet accessing, which does not necessarily require the high-speed real-time communication, while for the safety applications, such as Collision Avoidance or electronic traffic sign, DSRC outperforms the 4G-LTE.

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Safety Evaluation of the Advanced Stop Assist System in Connected Vehicle Environment

Transportation Research Record Journal of the Transportation Research Board ◽

10.1177/0361198118797831 ◽

2018 ◽

Vol 2672 (22) ◽

pp. 47-57 ◽

Cited By ~ 1

Author(s):

Gwamaka Njobelo ◽

Thobias Sando ◽

Soheil Sajjadi ◽

Enock Mtoi ◽

Eren Erman Ozguven ◽

...

Keyword(s):

Safety Evaluation ◽

Signalized Intersections ◽

Simulation Software ◽

Sensitivity Analyses ◽

Dominant Factor ◽

Connected Vehicle ◽

Market Penetration ◽

Test Bed ◽

Dilemma Zone ◽

Advisory Speed

Although traffic signals are installed to reduce the overall number of collisions at intersections, certain types, in particular, rear-end collisions are increasing due to signalization. One dominant factor associated with rear-end crashes is the indecisiveness of the driver, especially in the dilemma zone. An advisory system to help the driver make the stop-or-pass decision would greatly improve intersection safety. This study proposes and evaluates an Advanced Stop Assist System (ASAS) at signalized intersections by using Vehicle-to-Infrastructure (V2I) communication. The proposed system utilizes communication data, received from roadside equipment, to provide approaching vehicles with vehicle-specific advisory speed messages to prevent vehicle hard-braking at a yellow or red signal. A simulation test bed was modeled using VISSIM, a microscopic simulation software, to evaluate the effectiveness of the proposed system. The results demonstrate that at full market penetration (100% saturation of vehicles equipped with on-board communication equipment), the proposed system reduces the number of hard-braking vehicles by nearly 50%. Sensitivity analyses of market penetration rates also show a degradation in safety conditions at penetration rates lower than 40%. The results suggest that a penetration rate of at least 60% is required for the proposed system to minimize rear-end collisions and improve safety at the signalized intersections.

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Analysis of Inter-Satellite Optical Wireless Communication System

International Journal of Advanced Research in Computer Science and Software Engineering ◽

10.23956/ijarcsse.v7i10.267 ◽

2017 ◽

Vol 7 (10) ◽

pp. 10

Author(s):

Rajbir Singh

Keyword(s):

Wireless Communication ◽

Optical Networks ◽

Data Transmission ◽

High Speed ◽

Open Space ◽

Communication Link ◽

Optical Wireless Communication ◽

Optical Wireless ◽

High Speed Data ◽

Speed Data Transmission

Optical networks are bandwidth efficient networks are used for long haul communication providing seamless data transfer. For high speed data transmission in open space between different satellites, Inter-satellite Optical wireless communication (IsOWC) is widely used .In this paper we have evaluated the performance of IsOWC communication link for high speed data transmission .The performance of the system is evaluated on the basis of qualitative parameters such as Q-factor and BER using optisystem simulator.

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Test Bed Development for Detection and Diagnosis of Prostate Cancer Via Internet and Wireless Communication Networks

10.21236/ada477069 ◽

2007 ◽

Author(s):

Yu-Dong Yao ◽

Hong Man ◽

Yan Meng

Keyword(s):

Prostate Cancer ◽

Wireless Communication ◽

Communication Networks ◽

Wireless Communication Networks ◽

Test Bed ◽

Detection And Diagnosis

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Design and Implementation of an Efficient Parallel LFSR Architecture for Wireless Communication Systems

Current Signal Transduction Therapy ◽

10.2174/1574362414666191016155707 ◽

2019 ◽

Vol 14 ◽

Author(s):

A. Suresh Babu ◽

B. Anand

Keyword(s):

Wireless Communication ◽

Power Consumption ◽

Low Power ◽

Communication Systems ◽

High Speed ◽

Design Tool ◽

Shift Register ◽

Linear Feedback ◽

Wireless Communication Systems ◽

Coverage Area

: A Linear Feedback Shift Register (LFSR) considers a linear function typically an XOR operation of the previous state as an input to the current state. This paper describes in detail the recent Wireless Communication Systems (WCS) and techniques related to LFSR. Cryptographic methods and reconfigurable computing are two different applications used in the proposed shift register with improved speed and decreased power consumption. Comparing with the existing individual applications, the proposed shift register obtained >15 to <=45% of decreased power consumption with 30% of reduced coverage area. Hence this proposed low power high speed LFSR design suits for various low power high speed applications, for example wireless communication. The entire design architecture is simulated and verified in VHDL language. To synthesis a standard cell library of 0.7um CMOS is used. A custom design tool has been developed for measuring the power. From the results, it is obtained that the cryptographic efficiency is improved regarding time and complexity comparing with the existing algorithms. Hence, the proposed LFSR architecture can be used for any wireless applications due to parallel processing, multiple access and cryptographic methods.

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A Novel Image Encryption Algorithm Using Multiple Encryption Techniques for Mobile Devices

International Journal of Sensors Wireless Communications and Control ◽

10.2174/2210327909666190408094102 ◽

2020 ◽

Vol 10 (2) ◽

pp. 123-142

Author(s):

Showkat Ahmad Bhat ◽

Amandeep Singh

Keyword(s):

Wireless Communication ◽

Communication Networks ◽

Image Encryption ◽

High Speed ◽

Security Analysis ◽

Encryption Algorithm ◽

Multiple Encryption ◽

Communication Devices ◽

Cryptographic Attacks ◽

Image Encryption Algorithm

Background & Objective: Digital multimedia exchange between different mobile communication devices has increased rapidly with the invention of the high-speed data services like LTE-A, LTE, and WiMAX. However, there are always certain security risks associated with the use of wireless communication technologies. Methods: To protect the digital images against cryptographic attacks different image encryption algorithms are being employed in the wireless communication networks. These algorithms use comparatively less key spaces and accordingly offer inadequate security. The proposed algorithm described in this paper based on Rubik’s cube principle because of its high confusion and diffusion properties, Arnold function having effective scrambling power, blocking cipher with block encryption and permutation powers. The main strength of the proposed algorithm lies in the large key spaces and the combination of different high power encryption techniques at each stage of algorithm. The different operations employed on the image are with four security keys of different key spaces at multiple stages of the algorithm. Results & Conclusion: Finally, the effectiveness and the security analysis results shows that the proposed image encryption algorithm attains high encryption and security capabilities along with high resistance against cryptanalytic attacks, differential attacks and statistical attacks.

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The Optimization of Alternating Current Electrospun PA 6 Solutions Using a Visual Analysis System

Polymers ◽

10.3390/polym13132098 ◽

2021 ◽

Vol 13 (13) ◽

pp. 2098

Author(s):

Tomas Kalous ◽

Pavel Holec ◽

Jakub Erben ◽

Martin Bilek ◽

Ondrej Batka ◽

...

Keyword(s):

High Voltage ◽

High Speed ◽

Visual Analysis ◽

Polyamide 6 ◽

Alternating Current ◽

Sine Wave ◽

Electrospinning Process ◽

Camera System ◽

Polymeric Solutions ◽

Analysis System

The electrospinning process that produces fine nanofibrous materials have a major disadvantage in the area of productivity. However, alternating current (AC) electrospinning might help to solve the problem via the modification of high voltage signal. The aforementioned productivity aspect can be observed via a camera system that focuses on the jet creation area and that measures the average lifespan. The paper describes the optimization of polyamide 6 (PA 6) solutions and demonstrates the change in the behavior of the process following the addition of a minor dose of oxoacid. This addition served to convert the previously unspinnable (using AC) solution to a high-quality electrospinning solution. The visual analysis of the AC electrospinning of polymeric solutions using a high-speed camera and a programmable power source was chosen as the method for the evaluation of the quality of the process. The solutions were exposed to high voltage applying two types of AC signal, i.e., the sine wave and the step change. All the recordings presented in the paper contained two sets of data: firstly, camera recordings that showed the visual expression of electrospinning and, secondly, signal recordings that provided information on the data position in the signal function.

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