Browsing by Author "El-Tokhy, M."

Filter results by typing the first few letters
Now showing 1 - 3 of 3
  • Thumbnail Image
    Item
    Efficient Error Correction Technique Improving the Efficiency of Image Transmission over a Mobile Bluetooth Networks
    (IEEE, 2012) El-Bendary, M. A. M.; El-Tokhy, M.; AbouElazm, A. E.; El-Fishawy, N. A.
    With increasing the applications fields of low-power short range wireless communication, especially Bluetooth, the most of these applications need transmitting image. This paper proposes improving the colored JPEG image transmission over mobile Bluetooth network using Enhanced Data Rate (EDR) packets with the 2DH(3) and 2DM(3) EDR Asynchronous Connectionless (ACL) packets. It proposes using efficient error control schemes to improve a transmission of colored images over Bluetooth systems. Also, it proposes different EDR packet formats for this purpose. 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 enhances the received colored image over a bad channel. The 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. The paper shows the standard error control scheme of old Bluetooth versions is ineffective in the case of colored JPEG image transmission over the mobile Bluetooth network. The proposed schemes provide packet latency. Also, it reduced the retransmission times with the lost frames reduction at low SNR.
  • Thumbnail Image
    Item
    Efficient Image Transmission over Low-Power IEEE802.15.1 Network over Correlated Fading Channels
    (IEEE, 2012) El-Bendary, M. A. M.; El-Tokhy, M.; Kazemian, H. B.
    The paper studies the colored image (JPEG) transmission over mobile Bluetooth network using Enhanced Data Rate (EDR) packets. The paper uses the 2DH3 EDR Asynchronous Connectionless (ACL) packets. It presents the proposed chaotic interleaving technique to improve a transmission of colored images over Bluetooth systems. Also, it studies different interleaving schemes for this purpose. A comparison study between different propositions is held in the paper to choose an effective technique over mobile Bluetooth network. The fragmentation of the transmitted image is discussed. The simulation experiments are carried over correlated Rayleigh fading channel. Our experiments reveal that the proposed chaotic interleaving technique enhances the received colored image. In our simulation, we propose the image compression is lossless type. The experimental results reveal using the encoded EDR Bluetooth packets reduces the dropped packets. Also, the paper shows the standard error control scheme of old versions is ineffective in the case of colored image transmission over mobile Bluetooth network. The paper shows there is an error factor from fragmentation process where it determines the number of packets. JPEG image performs better with using chaotic interleaving.
  • Thumbnail Image
    Item
    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.