Browsing by Author "Abd-El-Samie, F. E."

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    Proposed Approach for Improving Bluetooth Networks Security through SVD Audio Watermarking
    (IEEE, 2012) El-Bendary, M. A. M.; Haggag, A.; Shawki, F.; Abd-El-Samie, F. E.
    Some of applications need multi-level security. The paper proposes a novel approach IEEE 802.15.1 Bluetooth network to provide better secure link for essential applications. It proposes a new approach for audio watermarking using the singular value decomposition (SVD) mathematical technique. This approach is based on embedding the encrypted image in the singular values of the audio signal after transforming it into a 2-D format. After watermark embedding, the audio signal is transformed again into a 1-D format. The 1-D audio signal is segmented to Bluetooth packet payload length. That leads to the needs of fragmentation of the image to small segments. In the proposed technique the chaotic encryption is used for encrypt the image. It improves the quality of extracted images as proved experimentally, where it resists the noise and different attacks. The paper uses two type of Bluetooth packets (2DH1 and 2DM1), uncoded Enhanced Data Rate (EDR) and encoded EDR packets respectively. At the receiver the segments are recollected to construct watermark signal. The final step is extracting the image. Experiments of the simulation are carried over fading channel. Experimental results show that the proposed audio watermarking approach maintains the high quality of the audio signal and that the watermark extraction and decryption are possible.
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    Studying the Throughput Efficiency of JPEG Image Transmission over Mobile IEEE 802.15.1 Network Using EDR Packets
    (IEEE, 2012) El-Bendary, M. A. M.; El-Tokhy, M.; Shawki, F.; Abd-El-Samie, F. E.
    Throughput is one of the most important factors in wireless communication. This paper studies the throughput efficiency of Bluetooth network using Enhanced Data Rate (EDR) packets. This paper, proposes improving the throughput efficiency of JPEG image transmission over mobile Bluetooth network using Enhanced Data Rate (EDR) packets. This paper uses the 2DH(3) and proposed 2DM(3) EDR Asynchronous Connectionless (ACL) packets. This paper presents a proposed using efficient error control schemes to improve the throughput of Bluetooth systems. A comparison study between different propositions is held in the paper to choose an efficient case over mobile Bluetooth network. The simulation experiments are carried over correlated Rayleigh fading channel. Our experiments reveal that the proposed convolutional code with constraint length K=3 and 7 improves the throughput efficiency of JPEG image at low SNR values. In our simulation results show that the convolutional codes are good over correlated fading channel more than the traditional Bluetooth error correction scheme for EDR Bluetooth packets. At higher SNR values (SNR>28dB) the standard uncoded 2DH3 packets gives a good throughput. Finally, using convolutional code with different K values improves the throughput over mobile Bluetooth network.