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Wyszukujesz frazę "Zekry, Abdelhalim" wg kryterium: Autor


Wyświetlanie 1-3 z 3
Tytuł:
Efficient H.264 Intra Frame CODEC with Best Prediction Matrix Mode Algorithm
Autorzy:
Hamdy, Sara
Zekry, Abdelhalim
Mohamed, Wael A.
Powiązania:
https://bibliotekanauki.pl/articles/226164.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
best prediction matrix mode (BPMM)
compression efficiency
H.264/AVC
Huffman coding
Intra prediction
Opis:
The continuous growth of smart communities and ever-increasing demand of sending or storing videos, have led to consumption of huge amount of data. The video compression techniques are solving this emerging challenge. However, H.264 standard can be considered most notable, and it has proven to meet problematic requirements. The authors present (BPMM) as a novel efficient Intra prediction scheme. We can say that the creation of our proposed technique was in a phased manner; it's emerged as a proposal and achieved impressive results in the performance parameters as compression ratios, bit rates, and PSNR. Then in the second stage, we solved the challenges of overcoming the obstacle of encoding bits overhead. In this research, we try to address the final phase of the (BPMM) codec and to introduce our approach in a global manner through realization of decoding mechanism. For evaluation of our scheme, we utilized VHDL as a platform. Final results have proven our success to pass bottleneck of this phase, since the decoded videos have the same PSNR that our encoder tells us, while preserving steady compression ratio treating the overhead. We aspire our BPMM algorithm will be adopted as reference design of H.264 in the ITU.
Źródło:
International Journal of Electronics and Telecommunications; 2020, 66, 3; 571-582
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Autonomous Wearable Sensor Node for Long-Term Healthcare Monitoring Powered by a Photovoltaic Energy Harvesting System
Autorzy:
Mohsen, Saeed
Zekry, Abdelhalim
Youssef, Khaled
Abouelatta, Mohamed
Powiązania:
https://bibliotekanauki.pl/articles/227109.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
energy harvesting
healthcare monitoring
wearable sensor nodes
photovoltaic
Bluetooth low energy (BLE)
Opis:
In this paper, an autonomous wearable sensor node is developed for long-term continuous healthcare monitoring. This node is used to monitor the body temperature and heart rate of a human through a mobile application. Thus, it includes a temperature sensor, a heart pulse sensor, a low-power microcontroller, and a Bluetooth low energy (BLE) module. The power supply of the node is a lithium-ion rechargeable battery, but this battery has a limited lifetime. Therefore, a photovoltaic (PV) energy harvesting system is proposed to prolong the battery lifetime of the sensor node. The PV energy harvesting system consists of a flexible photovoltaic panel, and a charging controller. This PV energy harvesting system is practically tested outdoor under lighting intensity of 1000 W/m². Experimentally, the overall power consumption of the node is 4.97 mW and its lifetime about 246 hours in active-sleep mode. Finally, the experimental results demonstrate long-term and sustainable operation for the wearable sensor node.
Źródło:
International Journal of Electronics and Telecommunications; 2020, 66, 2; 267-272
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
FPGA Implemetation of Acquisition Phase of the GPS Receiver Using XSG
Autorzy:
Hawary, Mohamed Ibrahiem El
Hamza, Gihan Gomah
Zekry, Abdelhalim
Motawie, Ibrahiem Mohamed
Powiązania:
https://bibliotekanauki.pl/articles/963910.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
GPS receiver
acquisition phase
SDR
Xilinx System Generator XSG
FPGA implementation
Opis:
In the past it was usual to exert a huge effort in the design, simulation, and the real time implementation of the complicated electronic and communication systems, like GNSS receivers. The complexity of the system algorithms combined with the complexity of the available tools created a system that is difficult to track down for debugging or for redesign. So, the simulation and educational tools was different from the prototyping tools. In this paper the parallel search acquisition phase of a GPS receiver was simulated and implemented on FPGA using the same platform and through a graphical programming language. So this paper introduces the fruit of integrating the prototyping tools with the simulation tools as a single platform through which the complicated electronic systems can be simulated and prototyped.
Źródło:
International Journal of Electronics and Telecommunications; 2019, 65, 4; 739-744
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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