Wszystkie pola: ZigBee - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: An Efficient Chaotic Interleaver for Image Transmission over IEEE 802.15.4 Zigbee Network
Autorzy:: El-Bendary, M. A. M. M.
El-Azm, A. A.
Powiązania:: https://bibliotekanauki.pl/articles/309078.pdf
Data publikacji:: 2011
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: block interleaving
chaotic interleaving
convolutional interleaving
fading channels
ZigBee
Opis:: This paper studies a vital issue in wireless communications, which is the transmission of images over wireless networks. IEEE ZigBee 802.15.4 is a short-range communication standard that could be used for small distance multimedia transmissions. In fact, the ZigBee network is a wireless personal area network (WPAN), which needs a strong interleaving mechanism for protection against error bursts. Thispaper presents a novel chaotic interleaving scheme for this purpose. This scheme depends on the chaotic Baker map. A comparison study between the proposed chaotic interleaving scheme and the traditional block and convolutional interleaving schemes for image transmission over a correlated fading channel is presented. The simulation results show the superiority of the proposed chaotic interleaving scheme over the traditional schemes.
Źródło:: Journal of Telecommunications and Information Technology; 2011, 2; 67-73
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: SVD Audio Watermarking: A Tool to Enhance the Security of Image Transmission over ZigBee Networks
Autorzy:: El-Bendary, M. A. M.
El-Azm, A. A.
El-Fishawy, N.
Shawki, F.
El-Tokhy, M. A. R.
El-Samie, F. E. A.
Krzemian, H. B.
Powiązania:: https://bibliotekanauki.pl/articles/308392.pdf
Data publikacji:: 2011
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: audio watermarking
copyright protection
IEEE 802.15.4, SVD
Opis:: The security is important issue in wireless networks. This paper discusses audio watermarking as a tool to improve the security of image communication over the IEEE 802.15.4 ZigBee network. The adopted watermarking method implements the Singular-Value Decomposition (SVD) mathematical technique. This method is based on embedding a chaotic encrypted image in the Singular Values (SVs) of the audio signal after transforming it into a 2-D format. The objective of chaotic encryption is to enhance the level of security and resist different attacks. Experimental results show that the SVD audio watermarking method maintains the high quality of the audio signals and that the watermark extraction and decryption are possible even in the presence of attacks over the ZigBee network.
Źródło:: Journal of Telecommunications and Information Technology; 2011, 4; 99-107
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

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