a significant problem in multicarrier communication systems is the necessity to reduce the value of papr (peak-to-average power ratio) of transmitting signal. in this thesis we study the effect of the system parameters such as coding and modulation types on papr and ultimate ber in a mc-cdma system. in this study we consider fading channel as well as the nonlinearity of transmitter’s amplifier ...

Today, the importance and special position of the historical texture and buildings in the city is completely obvious. However, the issue of protecting, supporting and restoring historical texture and valuable historical buildings in Iran is not seriously, scientifically and legally pursued by top level of management and popular demand. Historical texture and buildings are increasingly in danger...

this thesis is a study on insurance fraud in iran automobile insurance industry and explores the usage of expert linkage between un-supervised clustering and analytical hierarchy process(ahp), and renders the findings from applying these algorithms for automobile insurance claim fraud detection. the expert linkage determination objective function plan provides us with a way to determine whi...

textbooks play a crucial role in language learning classrooms. the problem is that among the great quantity of available textbooks on the market which one is appropriate for a specific classroom and a group of learners. in order to evaluate elt textbooks, theorists and writers have offered different kinds of evaluative frameworks based on a number of principles and criteria. this study evaluate...

During 19th century a wave of orientalism culminated and lots of orientalists departed for the eastern lands with various motivations. They started to research and write on the eastern societies, cultures, civilizations and arts, including carpets. Historiography, study of motives and designs and weave-geography of eastern carpets were of the most important points orientalists focused on. This ...