Search Results - "Messiha, Nagy W."

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  1. 1

    Fair subcarrier-power allocation scheme for multiuser multicarrier systems by Abd-Elnaby, Mohammed, Sedhom, Germien G., Messiha, Nagy W., Zhu, Xu, Abd El-Samie, Fathi E.

    Published in Journal of Central South University (01-08-2015)
    “…The main objective of multiuser orthogonal frequency division multiple access (MU-OFDM) is to maximize the total system capacity in wireless communication…”
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    Journal Article
  2. 2

    Efficient user pairing algorithm for enhancement of spectral efficiency and interference cancelation in downlink NOMA system by Abd-Elnaby, Mohammed, Sedhom, Germien G., Messiha, Nagy W., Elwekeil, Mohamed

    Published in Wireless networks (01-02-2021)
    “…A new subcarrier-user allocation algorithm for the downlink non-orthogonal multiple access system is presented in this paper. The proposed algorithm aims to…”
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    Journal Article
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  5. 5

    Chaotic encryption of speech signals by Mosa, Emad, Messiha, Nagy W., Zahran, Osama, Abd El-Samie, Fathi E.

    Published in International journal of speech technology (01-12-2011)
    “…This paper introduces a speech encryption approach, which is based on permutation of speech segments using chaotic Baker map and substitution using masks in…”
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    Journal Article
  6. 6

    Electromagnetic Field Measurement Instruments: Survey by Shalaby, Mohamed, Shokair, Mona, Messiha, Nagy W.

    “…The danger of human exposure to electromagnetic fields (EMFs) is a vital phenomenon to be studied. There are a lot of competing radio and microwave…”
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    Journal Article
  7. 7

    Subcarrier Gain Based Power Allocation in Multicarrier Systems by Mohammed Abd-Elnaby, Germien G. Sedhom, Fathi E. Abd El-Samie, Nagy Wadie Messiha, Xu Zhu

    “…The Orthogonal Frequency Division Multiplexing (OFDM) transmission is the optimum version of the multicarrier transmission scheme, which has the capability to…”
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    Journal Article
  8. 8

    Migration of Legacy Industrial Automation Systems in the Context of Industry 4.0- A Comparative Study by Zawra, Labib M., Mansour, Hala A., Messiha, Nagy W.

    “…Automation systems are driven by industrial requirements such as sustainability, flexibility, efficiency and competitiveness. Those in turn are driven by a…”
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    Conference Proceeding
  9. 9

    Performance of a LTE system employing practical cognitive femtocells by Ghanem, Walid R., Shalaby, Mohamed, Shokair, Mona, Messiha, Nagy W.

    “…Combined with the cognitive femtocells, LTE can serve the indoor users. Thanks to the cognitive capabilities of the femtocells, no mutual electromagnetic…”
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    Conference Proceeding
  10. 10

    Efficient subcarrier-power allocation scheme for multiuser OFDM systems by Sedhom, Germien G., Abd-Elnaby, Mohammed, Messiha, Nagy W.

    “…Multiuser Orthogonal Frequency Division Multiplexing (MU-OFDM) is a promising technique for achieving high total capacities in wireless communication systems…”
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    Conference Proceeding
  11. 11

    C10. Haar Wavelet Image Compression Algorithm (HW-JPEG2000) by Kishk, Amr M., Messiha, Nagy W., El-Fishawy, Nawal A., Alkafs, Abdelrahman A., Madian, Ahmed H.

    “…One of the popular image compression algorithms is Joint Photographic Experts Group 2000 (JPEG2000). It is based on Discrete Wavelet Transform (DWT). The…”
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    Conference Proceeding
  12. 12

    Proposed hierarchical routing protocol with simple nodes locating algorithm for authenticated nodes in wireless sensor network by Kishk, Amr M., Elkafs, Abdelrahman A., Madian, Ahmed H., Messiha, Nagy W., El-Fishawy, Nawal A.

    “…This paper introduces a hierarchical routing protocol with proposed node locating algorithm and high security level in the case of fixed and mobile nodes. With…”
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    Conference Proceeding
  13. 13

    Design and simulation of microwave diplexer based on D-CRLH metamaterials by Mansour, Mohamed M., Shalaby, Abdel-Aziz T., El-Rabaie, El-Sayed M., Messiha, Nagy W.

    “…In this paper, we propose a design of diplexer based on Dual Composite Right-Left Handed metamaterial (D-CRLH-MTM). The diplexer is practically a 3 port…”
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    Conference Proceeding
  14. 14

    Chaotic encryption of speech signals in transform domains by Mosa, E., Messiha, N.W., Zahran, O.

    “…A speech encryption system based on substitution and permutation is described. The stream of speech segments is divided and reshaped into two fixed size blocks…”
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    Conference Proceeding
  15. 15

    CRLH ZOR metametrial, design, simulation and fabrication by Mansour, Mohamed M., El-Mala, Mostafa, Shalaby, Abdel-Aziz T., El-Rabaie, El-Sayed M., Messiha, Nagy W.

    “…In this article, a survey about ZOR is illustrated and its characteristics are investigated in a detailed manner. The fabrication process has been presented to…”
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    Conference Proceeding
  16. 16

    Random encryption of speech signal by Mosa, E., Messiha, N.W., Zahran, O.

    “…This paper presents an analog speech cryptosystem based on permutation and substitution of speech segments. Permutations processes and substitutions masks are…”
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    Conference Proceeding