A. Abdaoui

Université de Technologie de Troyes, Troyes, Champagne-Ardenne, France

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Publications (7)2.06 Total impact

  • A. Abdaoui, T.M. Elfouly, M. Draief
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    ABSTRACT: We consider the design and implementation of the binary consensus algorithm in wireless sensor networks (WSN) under real life environment. This algorithm is applied for the evaluation of a consensus of a measured values in presence of a faulty/attacked node. As this algorithm has been tested theoretically, we deploy it for real-life environment including distributed and routing features. In this paper, we propose the development and the implementation of the distributed binary consensus algorithm in WSN under Tinyos environment. The implementation was tested on sensor nodes using the TinyOSSimulator for a WSN with a large number of nodes and a testbed with limited number of nodes. We evaluate the performances related to the average convergence time of nodes states to a consensus value. As in analytical results, in the simulations, we applied the distributed algorithm for fully connected, ring, cycle, Erdos Reny random, and star-shaped topologies.
    Wireless Communications and Mobile Computing Conference (IWCMC), 2013 9th International; 01/2013
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    ABSTRACT: In this paper, we introduce the hardware implementation of video acquisition in a sensor node of wireless sensor network with the help of USB 2.0 interface. The USB 2.0 video acquisition is based on the CY7C67300 controller and the DCC1545M image sensor. In this paper, we detail the hardware architecture and the application program design in a sensor node using field-programmable gate array (FPGA) board and USB 2.0 interface. The CY7C67300 controller is the suitable choice for FPGA Virtex 4 and 5 based USB peripherals. A simple interface module capable of transferring data rates above 400 Mbits/s is implemented to communicate with the CY7C67300 controller. In order to use the developed module, in Xilinx embedded design, we provide a custom peripheral which includes the CY767300 interface as its core and additional logic for the connection to the external peripheral controller (EPC) and then the processor local bus (PLB).
    01/2011;
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    ABSTRACT: This paper presents performance analysis of a cooperative multiple-input-multiple-output (MIMO) relaying system with a single relay. In this scheme, each link uses MIMO Alamouti space-time block coding (STBC) over Rayleigh flat-fading channels. The particularity of the proposed scheme is that, during a first time slot, the source node broadcasts each STBC to the relay and destination nodes. During the second time slot, the relay node amplifies-and-forwards (AF) the received STBCs. Finally, the receiver at the destination node exploits the diversity gain that is obtained through the direct and indirect links simultaneously by applying maximum ratio combining (MRC) on the received signals. Using the SNR for the direct link and an upper bound of the SNR for the indirect link, the moment-generating function (MGF) of the SNR for the cooperative link is derived. Since this MGF is based on an upper bound of the SNR, it is then employed to derive a lower bound of the symbol error probability (SEP) for a particular signal of M-ary quadrature-amplitude modulation (M-QAM). Subsequently, simulation results of the SEP are presented to illustrate the performance improvement given by the MIMO cooperative diversity system based on the STBC scheme.
    IEEE Transactions on Vehicular Technology 10/2010; · 2.06 Impact Factor
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    A. Abdaoui, M. Berbineau, H. Snoussi
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    ABSTRACT: In this paper, we introduce a collaborative minimum mean squared error (MMSE) interference canceler in MIMO relay networks. The proposed receiver architecture is characterized by the integration of the generalized minimum residual method (GMRES) for symbol detection. In this scheme, the GMRES method detects the transmitted symbols by solving iteratively a linear system representing the MMSE interference canceler without matrix inversion. The relay-destination channels are assumed to be orthogonal. We evaluate the instantaneous capacity of the equivalent MIMO relay network equipped with K parallel relay nodes for TDMA and MC-CDMA modes, using the assumption that the source node does not communicate directly with the destination node. In order to evaluate the system performances, the bit error rate (BER) is evaluated with respect to the number of relay nodes K and the signal to noise ratio (SNR) measured at the destination.
    Global Telecommunications Conference, 2008. IEEE GLOBECOM 2008. IEEE; 01/2009
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    ABSTRACT: The success of MIMO technology has led to the concept of cooperative communications where multiple single-antenna nodes can share their antennas in order to create a distributed ¿virtual¿ MIMO system. The basic idea of Multiple Input Multiple Output systems is to create spatial diversity transmitting signals from different locations. This elementary concept is the basis of cooperative communications. In this paper, a brief state of the art of cooperative communications is first presented. The concept is then applied to a wireless transmission scenario between an urban bus and a control centre with a relay for video surveillance applications. We consider either theoretical or realistic propagation channels: 1) Rayleigh channels on all three links, or 2) a Rice channel between the relay and the destination and a suburban channel for the other links. It will be shown that cooperative communications prove to be particularly interesting to extend the coverage range.
    ITS Telecommunications, 2008. ITST 2008. 8th International Conference on; 11/2008
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    A. Abdaoui, M. Berbineau, H. Snoussi
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    ABSTRACT: In this paper, we propose a reduced complexity interference canceler for a Turbo Space-Time Codes (TSTC) receiver. Actually, the TSTC receiver is based on a linear Minimum Mean Squared Error (MMSE) filter inside an Interference Canceler (IC) loop. In this scheme, considering the matrix inversion cost, the overall complexity remains important for a large number of transmit and receive antennas. In the proposed receiver, we integrate the Generalized Minimum residual method (GMRES) for symbol detection to compute the MMSE filter without matrix inversion. A good tradeoff between performances and complexity is thus achieved for a system with a large number of transmit and receive antennas. The bit error ratio (BER) and the complexity are evaluated with respect to the number of iterations of the GMRES and the number of transmit/receive antennas. A comparison with the existent IC-MMSE is presented and discussed at the end of the paper.
    Signal Processing and Information Technology, 2007 IEEE International Symposium on; 01/2008
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    ABSTRACT: 1 Stating the problem Large civil structures such as buildings and bridges form the backbone of our society and are critical to its daily operation. Inspectors typically assess them manually, but a networked computer system that could automatically assess structural integrity could measurably lengthen a structure's lifetime, reduce its operational cost and improve the overall public safety.