65 research outputs found

    Approaches for the Development of Low-Budget Analyzers of the Spectrum Sensor Networks 2.4–2.5 GHz

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    In Ukraine, more and more new home and industrial networks are being built with full or partial use of wireless technologies. Over the past few years, such technologies have become the de facto standard. The number of networks is increasing because of their affordability and ease of use, the emergence of industrial roaming systems, a wide range of antenna equipment and permissions fixed at the legislative level. When designing a wireless network, it is not possible to anticipate all the nuances: re-reflection, shading, directionality of the antennas of the receivers, etc., so after the construction of a real system, you need to check it and reduce the impact of negative factors. Spectrum analyzers help solve this problem

    Pembangunan Jaringan Komputer Nirkabel Dengan Freebsd Sebagai Gateway

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    Wireless network is a quite new technology in computer network world. It can connect computers without any wire, but it use radio frequency at 2.4 GHz. Today computer network still use wire to connected computers. Wireless is use the air medium, so there is different medium between wire and air. To connect these two medium networks we need other hardware. The hardware is called access point, but there is other problem comes. Access point price is quite expensive, so to handle this problem people were tried to look for another alternative. The alternative is use a personal computer with FreeBSD operating system, but it can\u27t simulate access point perfectly because access point is hardware. It doesn\u27t matter that can\u27t simulate perfectly because not all feature that access point have are use

    Analysis and Design of Computer Networks Using a Web-Based DSS

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    Analyzing the performance of computer networks to improve their overall performance requires accounting for a large variety of inputs and operating characteristics, such as packet flow rates and sizes, device capabilities and interconnection capacities. A decision support system to analyze these multiple simultaneous variables is presented to assist network developers. Network architectures and demand patterns are accounted for and the underlying model that analyzes these patterns is discussed. A web based approach was utilized which has resulted in an accessible and scalable analytical tool

    Design and Implement Multi-Parameter Marine Environment Network Monitoring System

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    中国海岸线长约3.2万千米,其中大陆海岸线1.8万千米,岛屿海岸线1.4万千米,海洋蕴藏丰富的能量和矿产资源,人们开发和探索的领域逐渐从内地向沿海及近海地带扩展。海洋环境监测系统是集无线通信技术、传感器技术、微电子技术、物联网等先进技术为一体的综合体系,是认识海洋、开发海洋、保护海洋的基础。至今为止,建立在我国海岸线上的监测节点和沿海信息站存在数量少,分布不合理,观测方法不够完善,技术手段相对落后等问题;由于电池能量耗尽导致监测节点失效会影响整个无线传感网络生命周期以及系统功能;定位技术在海洋监测系统的应用广泛,但目前实现的定位系统常具有价格昂贵、设备体积大、定位范围小、精度低等特点,无法满足...Chinese coastline is about 32,000 km, mainland coastline is 18,000 km, islands coastline is 14,000 km. Marine contains abundant energy and mineral resources, and the field that used to develop and explore gradually extended from mainland to coastal. Marine environment monitoring system is comprehensive system, which is a set of advanced technologies such as wireless communication technology, senso...学位:工学硕士院系专业:信息科学与技术学院_通信与信息系统学号:2332013115322

    Performance of wireless local area networks in Malaysian institutions

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    Although Wireless Local Area Networks (WLANs) are widely used in many settings little work has been done in studying their impact and benefits. This study provides empirical indicators on the performance of the WLANs implemented on Malaysian Institutions of Higher Learning Our research adopted Deming’s P-D-C-A Model and modified it to Plan-Implement-Control-Evaluate (P-I-C-E) in establishing a performance measurement for a WLAN; hence WLAN Performance Index (WPi). The measurement consists of four key performance indicators (KPi), reflecting the performance of the four P-I-C-E dimensions. These performance indicators provide a guide for the institutions to take the necessary corrective and preventive actions in attaining an effective WLAN system. Benchmarking was conducted by comparing three institutions in identifying the best WLAN system measures. The WPi is then applied to the three Malaysian public institutions of higher learning (MIPTA), which have implemented such WLAN system. The study reveals the WPi of each of the MIPTA being measured, indicating the strength and weaknesses of each institutions. Also, we suggest corrective actions necessary in achieving an effective and efficient WLAN system. Gap analysis was done to the three MIPTAs findings comparative to the benchmarked WLAN system
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