Jocelyn Fiorina

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In ultra-wideband (UWB) communications based on time-hopping (TH) impulse radio, one of the most frequently studied receivers is the correlation receiver. The multiuser interference (MUI) at the output of this receiver is sometimes modeled as a Gaussian random variable. In order to justify this assumption, the conditions of validity of the Central Limit(More)
(MUI) at the output of this detector is modeled as a Gaussian random variable. In order to justify this assumption, the conditions of validity of the central limit theorem have to be studied in the asymptotic regime where the number of interferers and the spreading factor grow toward infinity at the same rate. An asymptotic study is made in this paper based(More)
—Space-time coding techniques have become commonplace in wireless communication standards as they provide an effective way to mitigate the fading phenomena inherent in wireless channels. However, the use of Space-Time Block Codes (STBCs) increases significantly the optimal detection complexity at the receiver unless the low complexity decodability property(More)
—Space-Time Block Codes (STBCs) suffer from a prohibitively high decoding complexity unless the low-complexity decodability property is taken into consideration in the STBC design. For this purpose, several families of STBCs that involve a reduced decoding complexity have been proposed, notably the multi-group decodable and the fast decodable (FD) codes.(More)
We propose in this paper to show how a one-bit sampling receiver can be more efficient in some cases than the classical correlation receiver for Impulse Radio Ultra Wide Band (IR-UWB) communications with high Multi User Interferences (MUI). This one-bit sampling receiver can also be seen as a hard decoding process of the classicla repetition code used in(More)