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 16 of 16 for “"Received signal strength (RSS)"”.
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Investigation of Indoor Propagation Algorithms for Localization Purposes: Simulation and Measurements of Indoor Propagation Algorithms for Localization Applications using Wall Correction Factors, Local Mean Power Estimation and Ray Tracing Validations
… of arrival (AOA), time of arrival (TOA) and received signal strength (RSS). Different models of path loss, shadowing and fast fading mechanisms are explored. The concept of MIMO channels is studied using many types of deterministic channel modelling such as Finite Difference Time Domain, Ray …
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A Grid based Indoor Radiolocation Technique Based on Spatially Coherent Path Loss Model
… propagation in an environment by solely using Received Signal Strength (RSS) fingerprints. The propagation of the radio waves is characterized by uniformly dividing the environment into grid cells, followed by the estimation of the propagation parameters for each grid cell individually. By …
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Distributed Localization for Wireless Distributed Networks in Indoor Environments
… associates unique characteristics such as received signal strength (RSS) that differentiates a location from another location. The location-dependent characteristics then can be used to infer a user's location. Furthermore, fingerprinting requires no specialized hardware because of its …
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An experimental comparison of wireless position locating algorithms based on received signal strength
… and a subset of these algorithms only rely on received signal strength (RSS). Two of the most promising RSS-based algorithms are the LC and dwMDS algorithms; however each algorithm has only been tested via computer simulations with different environmental parameters. To determine which …
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A novel beam management strategy using UE trajectory mapping
… of each segment to ensure stable and consistent signal coverage. The methodology integrates angular weighting, and dynamic power control to enhance beamforming efficiency. The angular weighting function prioritizes signals aligned closely with the beam direction, further enhancing signal strength …
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Localizatation estimation usign the technique of multi-sequence positioning
… to the current localization technique of Received Signal Strength (RSS) and the Time of Arrival (TOA). The result showed that MSP showed more efficiently in short and long range as compared to TOA. However, RSS proven to perform better than MSP in long range estimation. This was reasoned …
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Rogue Access Point Detection through Statistical Analysis
… done through analysis of the clock skew and the Received Signal Strength (RSS) as fingerprints using a naïve Bayes classifier to detect presence of rogue APs. Analysis of the system and extensive experiments in various scenarios on a real system have proven the efficiency and accuracy of the …
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An Optimization Approach to Indoor Location Problem Based on Received Signal Strength
… of a low-cost indoor location system using received signal devices. Indoor location through received signal strength (RSS) is of low costs, yet it suffers from poor accuracy due to lack of direct line-of-sight, multi-path ratio propagation, and various interferences. To improve its location …
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Energy-Efficient and Trustworthy Location-Based Services for Next-Generation IoT
… (BLE), and Long-Range (LoRa). Among these, Received Signal Strength (RSS)-based approaches stand out for their simplicity, cost-effectiveness, and compatibility with commodity devices. However, their performance is strongly affected by environmental variability, multipath propagation, and …
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Vibrations of mechanical structures: source localization and nonlinear eigenvalue problems for mode calculation
… for localization of vibration events. I use a received signal strength (RSS) framework that presumes exponential energy decay with distance to the source. I derive the Cramér-Rao bound (CRB) for this parameter estimation problem, with the unknown parameters being source location, source …
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Improved Localization Algorithms in Indoor Wireless Environment
… are in indoor environment, however, the GPS signal is usually blocked, so we also consider other assisted positioning techniques in order to obtain accurate position of targets. In this thesis, three different schemes in indoor environment are proposed to minimize localization error by …
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Physical Layer Security for Wireless Position Location in the Presence of Location Spoofing
… or disrupted by adversaries or unreliable signal sources. This dissertation addresses the problem of securing a radio location system against location spoofing, specifically the characterization, analysis, detection, and localization of location spoofing attacks by focusing on fundamental …
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Dynamic user motion prediction using advanced Kalman filtering in 5G mmWave systems
… to adapt to such scenarios, often leading to signal degradation, connectivity drops, inefficient resource utilization and more power consumption. This research presents an advanced framework that integrates historical user trajectories through beam sweeping, user tracking via sensor-based …
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Optimizing range aware localization in wireless sensor networks (WSNs)
… the performance of time-of-flight (ToF) and received signal strength (RSS) based ranging using IEEE 802.1.5.4 compliant WSNs nodes in outdoor and indoor for both line-of-sight (LOS) and non-line-of-sight (NLOS) paths. The fundamental Cram´er- Rao lower bound (CRLB) on ToF and RSS ranging …
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Wireless Network Physical Layer Security with Smart Antenna
… patterns at a high frequency. In this way, the signal to unintended directions experiences severe fading and the eavesdropper cannot decode it. We use simulation experiments to show that the artificial fading outperforms single pattern beamforming in reducing the unnecessary coverage area of the …
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Radio-Location Techniques for Localization and Monitoring Applications. A study of localisation techniques, using OFDM system under adverse channel conditions and radio frequency identification for object identification and movement tracking
… channel improves the performance of OFDM signal by mitigating the effect of frequency offset synchronization to give error-free data at the receiver, good angle of arrival accuracy and improved SNR performance. The full system simulation to explore optimum values such as channel estimation …