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Study and evaluation of a frequential multiplexing based on OFDM/OQAM

Abstract : This thesis is dedicated to the study of the OFDM/OQAM modulation as an alternative to the OFDM modulation. We treat more especially the multi-user environment. In this respect, synchronization aspects are crucial. The different options plus the choice of the waveform are examined in this point of view. Another objective is to precisely show how the OFDM/OQAM can be adapted to a cellular transmission type, taking as reference the 3GPP/LTE system. The main contributions we have made are : 1) Analysis of the desynchronization phenomena : we analyze the effect of desynchronization, according to the time and frequency axes, on the performance of OFDM/OQAM at the receiver side. 2) Synchronization method : we analyze a method of temporal synchronization defined in a single user OFDM/OQAM transmission and we adapt it to a multi-user scenario type. 3) Proposing for a multiple access scheme : we propose a multiple access scheme based on theOFDM/OQAM modulation, alternative to the known techniques OFDMA and SC-FDMA, for the UL transmission in a 3GPP/LTE context.
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Submitted on : Wednesday, December 19, 2012 - 5:46:17 PM
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Mohamed Gharba. Study and evaluation of a frequential multiplexing based on OFDM/OQAM. Other. Conservatoire national des arts et metiers - CNAM, 2012. English. ⟨NNT : 2012CNAM0820⟩. ⟨tel-00767401⟩

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