الفهرس 
MotivationOnly 14 pages are availabe for public view
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Abstract
This thesis is concerned with the Digital Video Broadcasting for br Handheld terminals (DVB-H) system which represents the European br standard of such systems with an evaluation of its performance. br Thesis starts with a complete overview on the DVB-H standard and br system then it focuses on the OFDM unit with all its specifications br mentioned in the standard with demonstration of the OFDM itself as a br modulation technique. br The different channel impairments that affect the propagating radio br signal specially if the receiver is a mobile one such as the propagation br loss, slow fading, fast fading, flat fading, frequency selective fading and br Doppler effect were discussed. br Various interpolation algorithms used for channel equalization such as br the linear, nearest, spline, second order Gaussian and 2D interpolations br were also represented. br The complete OFDM transmitter/receiver system is then simulated on br MATLAB according to the DVB-H standard specifications with a study br of the effect of the different channel impairments on its performance, br applying different interpolation methods used for channel equalization br with comparison between them. Also two algorithms for channel br estimation in DVB-H systems based on interpolation are proposed and br 10 br they were found to outperform the previously known methods with br respect to the BER criterion.