Slah Jarboui

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High peak-to-average power ratio (PAPR) is the major drawback for multicarrier transmission. In this paper, we propose reliable PAPR reducing method that consists in putting together a low complexity Golay coder followed by special Fractional Fourier Transform (FRFT) block. The input data encoder which provides low order Golay sequences coded modulation is(More)
In this paper, we derive for the first time the analytical expressions of the Cramer-Rao lower bound (CRLB) for non-data-aided (NDA) carrier frequency estimation from linearly modulated signals over flat Rayleigh fading channel (FRFC), where the fading gain is not constant during the observation window. Timing delay and phase offset are assumed as perfectly(More)
In this paper, new non-coherent space-time block code (STBC) based on concatenated inner STBC and outer four dimensional 8-PSK trellis coded modulation (4D-8-PSK-TCM) encoder is designed for quasi static Rayleigh fading channel. The code design method achieves a diversity order of 4 with two transmit and two receive antennas. Firstly, we demonstrate that(More)
The IEEE 802.11 WLAN becomes more applied for multimedia traffics that are very strict in terms of link rate and transmission delay performance. In this paper, the authors will study link adaptation requirements to allow the requested multimedia quality-based communications. The efficiency of rate control diagrams is linked to the fast channel variation(More)
We introduce and evaluate the performance of reliable fractional Fourier transform (FRFT) blocks both in the emitter and the receiver side for the four-dimensional 8-PSK-TCM previously designed for the NASA CCSDS standard. This new FRFT block makes use of weak inter correlation observed between signal and Gaussian noise in a particular FRFT plane and(More)
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