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UWB Communication System Based on Bipolar PPM with Orthogonal Waveforms

Wireless Engineering and Technology 2012年第3期3卷 181-188页

作者： amel elabed Fouzia Elbahhar Yassin Elhillali Atika Rivenq Raja Elassali CNRS UMR 8520 Villeneuve d’Ascq France ENSA Marrakech Morocco IFSTTAR LEOST Villeneuve d’Ascq France Université Lille Nord de France Lille France UVHC IEMN-DOAE Valenciennes France

In many classic Ultra Wide Band communication systems, only Gaussian and monocycle pulses associate to PPM modulation are used. In this paper, an original communication system based on orthogonal functions and the Bipolar PPM modulation is proposed. This system allows good performances in terms of Bit Error Rate (BER) and high data rate. This study concerns new applications, such as Vehicle to Vehicle (V2V) and Vehicle to Infrastructure (V2I) communication systems or a wireless link between computers. These applications need high reliability to transmit security-related information and high data rate to exchange multimedia data. With the emergence of the orthogonal wave-forms, the performances of the UWB communication system will be more interesting in terms of BER and data rate. In this paper, two kinds of improvement are proposed. The first improvement permits us to decrease the Bit Error Rate using the original waveforms. The second allows improving the data rate via novel modulation method. The last parameter study, in this paper, concerns the problem of synchronization between the different users. We will study the performances of the proposed system in multiusers environment in synchronous and asynchronous cases. In the first stage, the theoretical and simulation results will be presented for the proposed system. The simulation results obtained by comparing the classic UWB system and the proposed system show that our solution gives good performances in terms of BER and data rate. The theoretical results of BER values will be given for our proposed solution. In the second stage, we will compute BER values for different jitter effects. Theses studies report theoretical and simulation performances evaluation in the case of two

关键词： UWB Orthogonal Waveform PPM Pulse Position Modulation and Antipodal Modulation Jitter Multiuser

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