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 30 for “"Wireless local area network (WLAN)"”.
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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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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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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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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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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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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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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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Greediness control algorithm for multimedia streaming in wireless local area networks
… while streaming multimedia in a residential Wireless Local Area Network (WLAN). Inconsistencies have been identified that can have a severe impact on the Quality of Experience (QoE) experienced by end users. This problem arises as a result of the streaming processes reliance on rate …
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A Cognitive TV White Space Access Framework
… information. While the new IEEE802.11af wireless local area network (WLAN) standard attempts to resolve some SU access issues, there remain many challenges, such as the critical asymmetry between mobile and base station power resources. <br></br><br></br> This thesis presents a new …
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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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Concurrent multipath transmission to improve performance for multi-homed devices in heterogeneous networks
Recent network technology developments have led to the emergence of a variety of access network technologies - such as IEEE 802.11, wireless local area network (WLAN), IEEE 802.16, Worldwide Interoperability for Microwave Access (WIMAX) and Long Term Evolution (LTE) - which can be integrated to …
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Graph-theoretic channel modeling and topology control protocols for wireless sensor networks
… different research problems: (i) It presents a wireless channel model that reduces the complexity associated with high order Markov chains; and (ii) presents energy efficient topology control protocols which provide reliability while maintaining the topology in an energy efficient manner. For …
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ESD Protected SiGe HBT RFIC Power Amplifiers
… Amplifier designs. A prototype PA for 2.4 GHz Wireless Local Area Network (WLAN) applications was redesigned to provide protection to the RF input and the PA Control pins. A relatively new technique known as the L-C tank approach was used to protect the RFinput while a standard diode ring …
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Exploiting Cyclostationarity for Radio Environmental Awareness in Cognitive Radios
The tremendous ongoing growth of wireless digital communications has raised spectrum shortage and security issues. In particular, the need for new spectrum is the main obstacle in continuing this growth. Recent studies on radio spectrum usage have shown that pre-allocation of spectrum bands to …
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Improving the Capacity in Wireless Ad Hoc Networks through Multiple Channel Operation: Design Principles and Protocols
Despite recent advances in wireless local area network (WLAN) technologies, today's WLANs still cannot offer the same data rates as their wired counterparts. The throughput problem is further aggravated in multi-hop wireless environments due to collisions and interference caused by multi-hop …
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Network access selection in heterogeneous wireless networks
In heterogeneous wireless networks (HWNs), both single-homed and multi-homed terminals are supported to provide connectivity to users. A multiservice single-homed multi-mode terminal can support multiple types of services, such as voice call, file download and video streaming simultaneously on any …
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Context-Aware Resource Management and Performance Analysis of Millimeter Wave and Sub-6 GHz Wireless Networks
Emerging wireless networks are foreseen as an integration of heterogeneous spectrum bands, wireless access technologies, and backhaul solutions, as well as a large-scale interconnection of devices, people, and vehicles. Such a heterogeneity will range from the proliferation of multi-tasking user …
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