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.
Results
Showing 1 to 19 of 19 for “"Transmission errors"”.
-
Improving TCP performance over heterogeneous networks : The investigation and design of End to End techniques for improving TCP performance for transmission errors over heterogeneous data networks.
Transmission Control Protocol (TCP) is considered one of the most important protocols in the Internet. An important mechanism in TCP is the congestion control mechanism which controls TCP sending rate and makes TCP react to congestion signals. Nowadays in heterogeneous networks, TCP may work in …
-
Error detection and error concealment for MPEG2 over communication networks
… application for communication networks. During transmission errors may occur. For compressed video, that means degradation of the picture quality. Different error control strategies have been proposed to compensate for the problem of transmission errors. In this work we concentrate on combining …
-
Robot positioning error analysis and correction
… have been limited partly because of positioning errors. In this thesis, two causes of positioning errors are identified: link deflection and gear transmission errors. Positioning errors due to the effect of link deflection and gear transmission errors are discussed and an iterative scheme is …
-
Real time data acquisition for load management
… data is distorted due to noise in the line. Such transmission errors are imbedded in the data and require careful filtering. The thesis deals with the development of a Data Acquisition system that collects real time load and weather data and stores them as historical database for use in a load …
-
Transmission of image data over digital networks involving mobile terminals
There is a growing demand for data transmission over digital networks involving mobile terminals. An important class of data required for transmission over mobile terminals is image information such as street maps, floor plans and identikit images. This sort of transmission is of particular …
-
Diseño de simulación del engranaje, estudio del contacto y análisis tensional de engranajes cilíndricos rectos y heliocoidales de bajo ruido y contacto mejorado
… and (ii) predesign a parabolic function of transmission errors. Localization of the bearing contact allows us to avoid edge contact when missalignments occur. A parabolic function of transmission errors allows the almost lineal functions of transmission errors caused by missalignments to be …
-
Improving packet delivery efficiency using multi-radio diversity in wireless LANs
Data transmissions in Wireless Local Area Networks (WLANs) often suffer from bit errors that arise from the notoriously complex and time-varying signal propagation characteristics of the wireless medium. A number of physical factors such as attenuation and multi-path are prevalent indoors and can …
-
A deep learning approach to real-time short-term traffic speed prediction with spatial-temporal features
… due to many factors, like power failure, transmission errors,etc.,that could have an impact on the data collection. Given that some part of our dataset contains a large amount of missing values, we study the effectiveness of a multi-view approach to imputing the missing values so that …
-
A comparison study of TCP protocol (RENO and SACK) in WLAN, LAN networks
… While the wireless medium is more exposed to transmission errors and sudden changes. The main goal of this project is to evaluate various versions of TCP protocols in (LAN) and a (WLAN) networks. Simulation experiments are done using Simulation Network (NS2) programs for TCP Sack protocol and …
-
Analytical models of IP traffic on UMTS mobile networks
… on the CN, and one that would model the transmission errors on the UTRAN.
-
Performance modelling and enhancement of wireless communication protocols
… 802.11 standard family utilizing mainly radio transmission techniques, whereas the Infrared Data Association (IrDA) addressed the requirement for multipoint connectivity with the development of the Advanced Infrared(Alr) protocol stack. This work studies the collision avoidance procedures of …
-
Combined forward error correction and error concealment for digital video transmission
… used in digital communications to improve the transmission performance over noisy channels. Based on the introduced redundancy and encoding structure, a maximum likelihood (ML) decoding scheme can be used to correct significant part of transmission errors. For digital video transmission, …
-
Signal Processing for Joint Source -Channel Coding of Digital Images
… and then channel coding it to recover from transmission errors, this thesis advocates the joint source-channel coding solution to the problem. The joint approach potentially leads to significant performance gains in emerging multiuser communication scenarios like digital audio and video …
-
Research on remote control of reconfigurable modular robotic system
… Network bus. CAN protocol detects and corrects transmission errors caused by electromagnetic interference. The local PC can directly control the robotic arm via Visual Basic code, and it can also be treated as server controller. Client PCs can access and control the robotic arm remotely through …
-
From the lab to the real world : sources of error in UF6 gas enrichment monitoring
… factors that could potentially contribute to errors in a final enrichment determination delivered by the AEM. There are many factors that can cause errors in the determination of uranium hexafluoride (UF6) gas enrichment, especially during the period when the enrichment is being measured in an …
-
Link layer protocol performance of indoor infrared wireless communications
… by ambient infrared noise and by low power transmission levels due to eye safety limitations. The Infrared Data Association (IrDA) has developed the widely used IrDA 1.x protocol standard for short range, narrow beam, point to point connections.IrDA addressedthe requirement for indoor …
-
Low Complexity Multiview Video Coding
… 3D videos can suffer from packet loss during transmission, which can degrade the viewing quality of the 3D video at the decoder. This thesis aims to solve these problems by presenting techniques to reduce the computational complexity of the MVC encoder and by proposing a consistent error …
-
Using hypergraph theory to model coexistence management and coordinated spectrum allocation for heterogeneous wireless networks operating in shared spectrum
… (RF) spectrum are used to convey wireless transmissions from one radio antenna to another. Spectrum utilisation factor, which refers to how readily a given spectrum can be reused across space and time while maintaining an acceptable level of transmission errors, is used to measure how …
-
Seamless, reliable, video multicast in wireless ad hoc networks
… techniques that are robust against inevitable transmission errors. In contrast to MDC, LC encodes a media source into two or more sub-streams, known as layers, one base layer and several enhancement layers. The base layer can be decoded to provide a basic quality of the received video while the …