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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 15 of 15 for “"IEEE 802.11b"”.
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A Simulator for analyzing the throughput of IEEE 802.11b Wireless LAN Systems
… have proliferated in the last 5 years. The IEEE 802.11b products have become commonplace both in the residential and business places for untethered Internet access. However the end user experience has often been less satisfactory than what the technology can offer. The degradation in the …
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Throughput Measurements and Empirical Prediction Models for IEEE 802.11b Wireless LAN (WLAN) Installations
… campaign to evaluate the performance of two IEEE 802.11b access points (APs) under ideal, multiuser, and interference scenarios. The data from this measurement campaign was then used to create empirically based throughput prediction models. The resulting models were first developed using RSSI …
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Reduction in Coexistent WLAN Interference Through Statistical Traffic Management
… bands. Two such protocols are Bluetooth and IEEE 802.11b. Several methods have been presented in the literature for managing interference between these two devices. However, these approaches are generally not practical, since they either require the purchase of specialized hardware or do not …
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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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Reconfigurable Wideband Circularly Polarized Microstrip Patch Antenna for Wireless Applications
… the suggested design procedure to cover the IEEE 802.11b/g WLAN band. The performance of the fabricated antenna was measured and compared with the simulation results for the reflection coefficient, axial ratio, radiation pattern, and antenna gain. Good agreement is achieved between simulation …
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Filtering techniques for mitigating microwave oven interference on 802.11b wireless local area networks
… arises. Particularly strong interferers for the IEEE 802.11b standard are microwave ovens, since both operate at 2.4 GHz. The interference mitigation techniques all exploit the differences between the interference and the signal, since the former is sinusoidal in nature while the latter can be …
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A broadband Microwave Transceiver Front-end for an Airborne Software Defined Radio Experiment
… The transceiver must operate in the GSM-1800 and IEEE 802.11b/g WiFi frequency bands and accommodate beamforming. It consists of a transmitter and dual band receiver. The receiver input is fed by a helical antenna and the outputs are digitized for use in the SDR. The transmitter is fed by a …
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Voice Call Capacity Over Wireless Mesh Networks
… the voice call carrying capacity of an IEEE 802.11b/e based ad hoc network. We begin with the modelling of conversational speech and define a six state semi-Markov voice model based on ITU-T P59 recommendation. We perform a theoretical analysis of the voice model and compare it with …
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Smart Antennas & Power Management in Wireless Networks
… ad-hoc networks especially wireless LAN (IEEE 802.11b Standard) in the commercial market in recent years has reached a critical mass. The adoption and strong support of wireless IEEE 802.11 standard, coupled with the consequent decline in costs, has made wireless LAN deployment as one of …
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MedLAN: Compact mobile computing system for wireless information access in emergency hospital wards
… To implement that, it makes use of the existing IEEE 802.11b wireless technology. Initially, this thesis demonstrates that for specific scenarios (such as when using WLANs), DICOM specifications should be adjusted to accommodate for the reduced WLAN bandwidth. Near lossless compression has been …
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A fuzzy logic based approach to quality of service in 802.11b wireless networks
… of Electrical and Electronic Engineers (IEEE) 802.11b. Wireless hotspots and local area networks using equipment working to this standard are now ubiquitous. Regrettably the 802.11b standard has no mechanisms for providing QoS across wireless channels. Users of 802.11b networks cannot …
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Investigation into the design of ultra-wideband (UWB) and multi-band antennas
… for GSM and DCS/PCS as well as DCS/PCS and IEEE 802.11b applications are proposed, which have C-shape and T-shape structures respective1y. The theoretical and experimental results for these antennas are provided, in the point of view of reflection coefficient and radiation characteristics. …
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Improving the Reliability of Optimised Link State Routing Protocol in Smart Grid’s Neighbour Area Network
… requirements of the Smart Grid. The IEEE 802.11 ad hoc Wireless Mesh Network (WMN) is re-emerging as one of the communication networks that can significantly extend the reach of Smart Grid to backend devices through the Advanced Metering Infrastructure (AMI). However, the unique …
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A Power-Aware Routing Scheme for Ad Hoc Networks
Wireless network devices, especially in ad hoc networks, are typically battery-powered. The growing need for energy efficiency in wireless networks, in general, and in mobile ad hoc networks (MANETs), in particular, calls for power enhancement features. The goal of this dissertation is to extend …
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Design, Implementation and Analysis of Wireless Ad Hoc Messenger
… communicate wirelessly with each other using the IEEE 802.11b technology without the use of an infrastructure. The main protocol implemented in this application is based on Dynamic Source Routing (DSR), which consists of two important mechanisms, Route Discovery and Route Maintenance. We adopt DSR …