Accepted Papers

  • ANTI-JAMMING RANDOMIZED OFDM BAND HOPPING FOR TACTICAL COMMUNICATIONS
    Mohamed A. Soliman1, Walid M. Saad2, Karim H. Moussa3, Shawky Shaaban4, and Mohamed R. M. Rizk5
    1,2,4,5Alexandria University, Alexandria 21544, Egypt. 3Higher Institute of Engineering and Technology King Marriott, Alexandria 3135, Egypt.
    ABSTRACT
    Orthogonal frequency division multiplexing (OFDM) is proved to be a robust well-known technique and hopping across various frequency bands is also known for its ability to enhance the system's performance. Combining both of them should be beneficial in mitigating interference and jamming caused accidentally or on purpose especially in military applications. In this paper, the bit error rate (BER) performances of an improved OFDM communication system utilizing different frequency band hopping techniques against diverse types of jammers are presented. The overall system performance is improved gradually by increasing the number of frequency hopping bands against narrowband, wideband, and barrage jammers in case of low jamming power at the receiver front end. At high jamming power, no improvement is achieved using band hopping.
  • A CONTENT-BASED COMMUNICATION SOLUTION FOR VANET
    Mohamed Anis Mastouri1 and Salem Hasnaoui1
    1,2National school of engineers of Tunis - ENIT Tunis, Tunisia
    ABSTRACT
    Increasingly, vehicles are being equipped with wireless communication capabilities, embedded sensors, processing and opening a myriad of possibilities for powerful and potential life changing applications on efficiency, safety, public collaboration, comfort and participation while they are on the road. Due to the particular characteristics, from highly dynamic topology to intermittent connectivity, VANETs have great challenges in terms of data exchange and routing. In this article, a proposal of a content-based communication approach is presented as a solution to bypass the dynamicity and loss of connectivity.