In order to increase the understanding of the development of wirelesssensornetworks in the Internet of Things environment, and whether the distributed space-time coding in cooperative communicationtechnology can so...
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In order to increase the understanding of the development of wirelesssensornetworks in the Internet of Things environment, and whether the distributed space-time coding in cooperative communicationtechnology can solve the influence of wirelesssensornetwork nodes, this article discusses the distributed communication methods of wirelesssensornetworks in the Internet of Things environment were studied. In the method section, this article presents the relevant theoretical knowledge of the Internet of Things technology to the readers, and describes the wirelesssensornetwork and distributed communication methods in detail. Finally, the simulation experiment of the wirelesssensornetwork is successfully completed, analyzes the problems existing in the application of various frameworks, and combines the ideas of the existing automated test frameworks. A better method of integrated automated testing framework is presented. In view of the reusability of test drivers and the automatic generation of test results, the workload for testing is greatly reduced, and the setup and configuration of test environment are reduced. In the integration test phase, only one-time configuration of the framework is required, and only a few modifications are required for subsequent changes. The overall test efficiency has been significantly improved.
wirelesssensornetwork (WSN) have been attracting increasing interest for supporting a new generation of ubiquitous computing systems with great potential for many applications. However, the communication paradigms i...
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ISBN:
(纸本)9781479959792
wirelesssensornetwork (WSN) have been attracting increasing interest for supporting a new generation of ubiquitous computing systems with great potential for many applications. However, the communication paradigms in WSNs differ from the ones associated to traditional wirelessnetworks, triggering the need for efficient wirelesscommunicationtechnology. Several wireless technologies have emerged ranging from short and medium distance. Bluetooth, ZigBee and Impulse Radio Ultra Wide Band (IR-UWB) are three popular short range wirelesscommunications. Due to its various features and advantages (especially low power consumption and low complexity), IR-UWB is a very promising wirelesscommunicationtechnology for WSN. In this paper, we evaluate the main features and advantages of this new technology (IR-UWB) for WSN in terms of transmission time, data coding and power consumption compared to Bluetooth and ZigBee. To analyze and evaluate the main features and advantages of IR-UWB as an efficient short range wirelesscommunicationtechnology for WSN, we used MiXiM platform under OMNet++ simulator.
Light Fidelity (Li-Fi) is one of the key areas in wirelesscommunication that works in the same way as optical fiber, but the medium of transmission is free space. The design of a Light-emitting diode (LED) in Li-Fi t...
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Ina cloud-edge collaboration system, ensuring consistent wireless connectivity that meets the quality of service (QoS) for users with varying requirements is challenging. Therefore, the approach to task offloading for...
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Ina cloud-edge collaboration system, ensuring consistent wireless connectivity that meets the quality of service (QoS) for users with varying requirements is challenging. Therefore, the approach to task offloading for all mobile devices (MDs) should be carefully designed to enhance performance based on different requirements. This paper introduces a novel multi-objective genetic algorithm (MOGA) to address the task offloading problem, considering minimal energy consumption and latency simultaneously. Experimental results demonstrate that the proposed multi-objective genetic algorithm achieves rapid convergence and optimizes delay and energy consumption.
Ensuring data security in WSNs (wirelesssensornetworks) has been a persistent issue. The absence of a reliable mechanism to secure data poses a serious threat to the integrity of information. Also, the quality of se...
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The rapid development of wirelesssensornetworks (WSN) in various fields has brought great convenience. Since most wirelesssensor nodes are powered by batteries, energy efficiency is very important for WSN, and many...
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Quantum digital signature(QDS)can guarantee the information-theoretical security of a signature with the fundamental laws of quantum ***,most current QDS protocols do not take source security into account,leading to a...
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Quantum digital signature(QDS)can guarantee the information-theoretical security of a signature with the fundamental laws of quantum ***,most current QDS protocols do not take source security into account,leading to an overestimation of the signature *** this paper,we propose to utilize Hong–Ou–Mandel interference to characterize the upper bound of the source imperfections,and further to quantify information leakage from potential ***,we combine decoy-state methods and finite-size analysis in analyzing the signature *** results demonstrate the performance and feasibility of our *** current work can improve the practical security of QDS systems,thereby promoting their further networked applications.
In this study, a medical sensornetwork structure based on cognitive wireless regional area network (WRAN) technology is proposed for urgent communication in field hospitals. WRAN technology is based on cognitive radi...
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In this study, a medical sensornetwork structure based on cognitive wireless regional area network (WRAN) technology is proposed for urgent communication in field hospitals. WRAN technology is based on cognitive radio network approach, which is exploited for opportunistic spectrum access in places without internet access. In cognitive radio-based WRAN technology, a consumer premises equipment (CPE) and a base station communicate opportunistically by sensing available radio channels. In our network structure, CPEs use the time-division multiple access (TDMA) technique with channel bonding to detect patient-related data and transmit it to the base station. With the help of our node placement approach, many sensor nodes were placed in the field hospital environment. Because urgent communication is important in field hospitals, a fuzzy logic-based relay selection approach is proposed to improve network sustainability. sensor nodes are placed to cover the entire region to detect parameters around the field hospital. The values detected by the sensor nodes were collected by the collector station fixed in the center. The simulation model of our proposed approach was implemented using riverbed modeler software. Thanks to our proposed node placement and relay node selection approaches, the field hospital was monitored safely with a minimum number of wirelesssensor nodes.
作者：
Li, BinZou, YulongWu, TonghuaZhang, ZaichenChen, MingkaiJiang, YuhanNUPT
Key Lab Broadband Wireless Commun & Sensor Network Minist Educ Nanjing 210003 Peoples R China NUPT
Jiangsu Engn Res Ctr Commun & Network Technol Nanjing 210003 Peoples R China NUPT
Sch Telecommun & Informat Engn Nanjing 210003 Peoples R China Nari Grp Corp
Nanjing 211106 Peoples R China Southeast Univ
Frontiers Sci Ctr Mobile Informat Commun & Secur Natl Mobile Commun Res Lab Nanjing 210096 Peoples R China
This paper analyzes the security and reliability tradeoff (SRT) performance for a hybrid satellite-terrestrial network (HSTN) using the non-orthogonal multiple access (NOMA) protocol. To improve the SRT performance of...
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This paper analyzes the security and reliability tradeoff (SRT) performance for a hybrid satellite-terrestrial network (HSTN) using the non-orthogonal multiple access (NOMA) protocol. To improve the SRT performance of the NOMA based HSTN, a friendly jammer assisted transmission (FJT) scheme is proposed and its outage and intercept probability expressions are carried out in closed-form. The transmission secrecy outage probability is given to show the tradeoff between the security and reliability of the FJT scheme. For the purposes of comparison, the none jammer aided transmission (NJT) scheme is also considered in simulations. Numerical results reveal that the FJT scheme significantly enhances the SRT performance of each user and the whole system compared to the NJT scheme. Moreover, the power allocation between users and that between the relay and the friendly jammer can be adjusted to achieve better SRT performance.
A compact broadband loop complementary source antenna with four switchable tilted beams is proposed in this paper. The antenna is constructed by adding vertical quarter wavelength shorting pins to a horizontal four-le...
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A compact broadband loop complementary source antenna with four switchable tilted beams is proposed in this paper. The antenna is constructed by adding vertical quarter wavelength shorting pins to a horizontal four-leaf-clover-shaped loop patch. A packaged microstrip line structure is developed to excite different ports of the antenna. The complementary antenna features a wide impedance bandwidth of 56.5%, covering from 6.07 to 10.85 GHz, and the profile height of the proposed structure is 0.165 lambda(0) at the operating frequency of 8.46 GHz. In addition to its broadband and tilted radiation performances, the antenna can generate four switchable tilted beams in different directions to cover the entire hemispheric space. Measured results show that a gain of 7.89 dBi is achieved. Compared to available works, the proposed antenna demonstrates a notable bandwidth improvement, making it a preferable candidate for future intelligent wirelesscommunication.
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