Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 47 for “"Wireless local area network"”.
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Collaborative wireless local area network
In traditional infrastructural wireless local area network (WLAN), the mobile node (MN) makes the decision of choosing an access point (AP). The MN creates a list of APs in range along with the received signal strength indicator (RSSI). It then solely uses the RSSI as a decision metric for …
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Improving the Real-time Performance of a Wireless Local Area Network
… the transmission of real-time data within a wireless local area network (WLAN). Exact and approximate analytic network evaluation techniques are examined. The suitability of using a given technique in a particular situation is discussed. Simulation models are developed to study the …
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Design and analysis of reconfigurable phased array antenna for wireless local area network applications
… the Federal Communication Commission (FCC) for Wireless Local Area Network (WLAN) applications (2.4 and 5GHz) with adjustable radiation characteristics. Two reconfigurable mechanisms have been proposed in this work. The first mechanism controls operating frequency by switching the antenna from …
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Feasibility of Spectrum Sharing Between Airborne Weather Radar and Wireless Local Area Networks
Emerging technologies such as wireless local area networks and cellular telephones have dramatically increased the use of wireless communications services within the last 10 years. The shortage of available spectrum exists due to increasing demand for wireless services and current spectrum …
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Implementation of Orthogonal Frequency Division Multiplexing with FPGA
… access internet either through third generation network or IEEE802.11 wireless local area network. Orthogonal frequency division multiplexing (OFDM) has been widely used in IEEE802.11 wireless local area network and fourth generation network. This paper will focus on the design and implementation …
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Single queue priority scheduler for video transmission in IEEE 802.11 networks
… transmission poses many challenges in standard wireless network like Wireless Local Area Network or IEEE 802.11. The challenges range from handover, delay, packet loss, jitter, fading and signal loss. Some studies have suggested an increase in network resources as a way to cater for the huge …
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Channel assignment strategies for throughput enhancement in high density wireless local area networks
The emergence of high density wireless local area network (WLAN) deployments in recent years is a testament to both the insatiable demands for wireless broadband services and the ubiquity of WLAN technology. The increased density of WLAN deployments brings with it the potential of increased …
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An investigation into the viability of using radio signal strength across multiple frequencies for personnel tracking
… developed by Microsoft Research, using a wireless local area network with one mobile network point, and measuring the radio signal strength of the network communications between the mobile and fixed points. This project attempted to improve on this technique by investigating whether …
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A comparison of timing methods in orthogonal frequency division multiplexing (OFDM) systems
… division multiplexing (OFDM) is being used by wireless local area network (WLAN) standards, such as IEEE 802.11a, and wireless metropolitan area network (MAN) standards, such as IEEE 802.16a. OFDM is a very efficient communications scheme for wireless ADHOC networks. However, the wireless …
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Physical Layer Design for a Spread Spectrum Wireless LAN
A wireless local area network (LAN) system is proposed to provide mobility for existing data communication services. This thesis presents a physical layer design for a direct sequence spread spectrum ISM band radio LAN system. This radio system employs spread spectrum communication technology and a …
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Design of microstrip antenna based on different material properties
… Roger 4350 substrate which will be operating in Wireless Local Area Network (WLAN). The frequency chosen for the microstrip antenna is 2.4GHz and it has been chosen from IEEE 802.11 which is for the Wireless Fidelity (WiFi) network. This project is divided into three major parts which are …
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Efficient forward error correction coding technique for spread spectrum communications
… for the Forward Error Correction (FEC) of the wireless data in a highly noisy and severe fading wireless medium, based on standard (IEEE 802.11 Wireless Local Area Network specification) and GPS driven non-standard MAC schemes. The design and testing of this coding scheme is a part of MYMAR, a …
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Improving aggregate user utilities and providing fairness in multi-rate wireless LANs
… and fairly among competing devices using a wireless local area network. Unfortunately, existing MAC protocols, including 802.11's DCF, achieve neither efficiency nor fairness under many realistic conditions. In this dissertation, we show that both bit and frame-based fairness,the most widely …
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Throughput Optimization and Transmitter Power Saving (TOTPS) Algorithm and Extended TOTPS (ETOTPS) Algorithm for IEEE 802.11 Links
The IEEE 802.11 wireless local area network (WLAN) standard supports multiple transmission modes. However, the higher mandatory data rate mode does not necessarily yield higher throughput. This research started from the relationship between the link throughput and the channel's carrier-to-noise …
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Mobile Wireless System Interworking with 3G and Packet Aggregation for Wireless LAN
… the efficient transmission of data within a wireless local area network (WLAN) system. A simulation model was developed to study the performance of our protocol, AGG-MAC (aggregated medium access control). AGG-MAC is a simple and elegant medium access control (MAC) protocol designed to …
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A session-based architecture for Internet mobility
The proliferation of mobile computing devices and wireless networking products over the past decade has led to an increasingly nomadic computing lifestyle. A computer is no longer an immobile, gargantuan machine that remains in one place for the lifetime of its operation. Today's personal computing …
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The application of network coding to multicast routing in wireless networks
This thesis considers the application of network coding and opportunistic routing to improve the performance of multicast flows in wireless networks. Network coding allows routers to randomly mix packets before forwarding them. This randomness ensures that routers that hear the same transmission …
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SOME MULTIBAND COMPACT AND COST EFFECTIVE ANTENNAS FOR MOBILE COMMUNICATION APPLICATIONS
… are to support both cellular communication and wireless network applications. The target technologies and their frequency bands are Long Term Evolution (LTE),Global System for Mobile Communications(GSM) 850, Digital cellular systems (DCS1800), Personal Communications Service (PCS 1900), …
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An improved medium access control protocol for real-time applications in WLANs and its firmware development
The IEEE 802.11 Wireless Local Area Network (WLAN), commonly known as Wi-Fi, has emerged as a popular internet access technology and researchers are continuously working on improvement of the quality of service (QoS) in WLAN by proposing new and efficient schemes. Voice and video over Internet …
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An Open Management and Administration Platform for IEEE 802.11 Networks
<p>The deployment of Wireless Local Area Network (WLAN) has greatly increased in past years. Due to the large deployment of the WLAN, the immediate need of management platforms has been recognized, which has a significant impact on the performance of a WLAN. Although there are various …
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