WLAN IMPLEMENTATION AND PERFORMANCE ANALYSIS

Wireless networks are fast becoming ubiquitous in today's highly networked world. New applications based on 802.11 standards are rapidly expanding into corporate, residential, Wireless-Internet-Service-Provider (WISP), and hot-spot applications. With the advent of WLAN technologies, users are increasingly demand for WLAN high performance. Hence, the main focus of this project is to study, observe and experiment the WLAN implementation and performance analysis. The WLAN implementation and performance characteristics are firstly studied and several experiments are conducted. Two major applications are also performed under the wireless network condition that are File Transfer Protocol (FTP) and video streaming. The results show that the WLAN performance depends on location factors, network load and signal strength. The client location will affect the performance of interbuilding WLAN file transfer process. The media streaming performance can degrade significantly by signal quality

INDOOR LOCATION SENSING USING WLAN

The purpose of this project was to produce an indoor location system using WLAN IEEE 802.11b in Access Point (AP) infrastructure setup without additional external hardware. The system was developed in MATLAB platform that comprises of location sensing algorithm (Nearest Neighbor), signal strength database, client-server interface and graphical user interface (GUI). The basic idea was to build a database of signal strength information for various predetermined locations. Using the Nearest Neighbor algorithm, this database can be used to determine a particular location provided that a set of signal strength is given. As for the location sensing system's performance, it had a precision in terms of average distance error of 5 m and an accuracy of 72.2 %. The justification of these results was that noise, interference, multi-path effect, indoor propagation loss and random movement in the environment affectedRF signals

WLAN IMPLEMENTATION AND PERFORMANCE ANALYSIS

Wireless networks are fast becoming ubiquitous in today's highly networked world. New applications based on 802.11 standards are rapidly expanding into corporate, residential, Wireless-Internet-Service-Provider (WISP), and hot-spot applications. With the advent of WLAN technologies, users are increasingly demand for WLAN high performance. Hence, the main focus of this project is to study, observe and experiment the WLAN implementation and performance analysis. The WLAN implementation and performance characteristics are firstly studied and several experiments are conducted. Two major applications are also performed under the wireless network condition that are File Transfer Protocol (FTP) and video streaming. The results show that the WLAN performance depends on location factors, network load and signal strength. The client location will affect the performance of interbuilding WLAN file transfer process. The media streaming performance can degrade significantly by signal quality

Performance Evaluation of IEEE 802.11 ac WPA2 Laboratory Links

The increasing importance of wireless communications, involving electronic devices, has been widely recognized. Performance is a fundamental issue, resulting in more reliable and efficient communications. Security is also crucially important. Laboratory measurements are presented about several performance aspects of Wi-Fi IEEE 802.11ac WPA2 point-to-point links. Our study contributes to performance evaluation of this technology under WPA2 encryption, using available equipment (Cisco 2702i access points and TP-Link AC1900 USB 3.0 adapters). New results are given from TCP and UDP experiments concerning TCP throughput versus TCP packet length, jitter and percentage datagram loss versus UDP datagram size. Comparisons are made to corresponding results for WPA2 802.11n. Conclusions are drawn about the comparative performance of the links. Keywords: Wi-Fi, WLAN, IEEE 802.11ac, Wireless network laboratory performance, Point-to-Point WPA2 link

Performance Research on IEEE 802.11 ac Laboratory Links

The increasing importance of wireless communications, involving electronic devices, has been widely recognized. Performance is a fundamental issue, resulting in more reliable and efficient communications. Security is also crucially important. Laboratory measurements are presented about several performance aspects of Wi-Fi IEEE 802.11ac WPA2 point-to-point links. Our study contributes to performance evaluation of this technology under WPA2 encryption, using available equipments (Cisco 2702i access points and Edimax AC 1200 adapters). New results are given from TCP and UDP experiments concerning TCP throughput versus TCP packet length, jitter and percentage datagram loss versus UDP datagram size. Comparisons are made to results obtained for corresponding IEEE 802.11n links. Conclusions are drawn about the comparative performance of the links.University of Beira Interiorinfo:eu-repo/semantics/acceptedVersio

INDOOR LOCATION SENSING USING WLAN

The purpose of this project was to produce an indoor location system using WLAN IEEE 802.11b in Access Point (AP) infrastructure setup without additional external hardware. The system was developed in MATLAB platform that comprises of location sensing algorithm (Nearest Neighbor), signal strength database, client-server interface and graphical user interface (GUI). The basic idea was to build a database of signal strength information for various predetermined locations. Using the Nearest Neighbor algorithm, this database can be used to determine a particular location provided that a set of signal strength is given. As for the location sensing system's performance, it had a precision in terms of average distance error of 5 m and an accuracy of 72.2 %. The justification of these results was that noise, interference, multi-path effect, indoor propagation loss and random movement in the environment affectedRF signals

Scheduling Data Delivery in Heterogeneous Wireless Sensor Networks

In this paper we present a proxy-level scheduler that can significantly improve QoS in heterogeneous wireless sensor networks while at the same time reducing the overall power consumption. Our scheduler is transparent to both applications and MAC in order to take the advantage of the standard off-the-shelf components. The proposed scheduling reduces collisions through a generalized TDMA implementation, and thus improves throughput and QoS, by activating only a subset of stations at a time. Power savings are achieved by scheduling transfer of larger bursts of IP packets followed by longer idle periods during which node’s radio can either enter sleep or be turned off. Our simulation and measurement results show significant power savings with an improvement in QoS. On average we get 18% of saturation throughput enhancement for real traffic and 79 % of power reduction in a highly loaded network

Implementation of Electrical and Electronics' Department's Wireless Local Area Network and Central Server

This project is designed to overcome two related problems: the Electrical and Electronics Department is located on two blocks in the new campus, namely Block 22 and Block 23. Currently these blocks are connected through a physically wired local area network connection under the control of the Information Technology and Media Services (ITMS) department. Unfortunately, this has the restriction of requiring a computer to be physically near a port in order to log onto the network, and locations without a port are essentially cut off from the other computers. Another observed problem is the excessive dependence on unreliable paper records to track students as they borrow electronic components from the stores. To overcome these problems, this project involves the design and implementation of a wireless network that covers both the blocks. The project itself will have two stages: first, to set up the hardware for a wireless network in the two blocks, and secondly, to design and implement a centralised system for recording inventory when they are borrowed by students as a demonstration of the possibilities offered by such a network