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26 articles for “bandwidth quality”
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Investigating the Quality of Online Education from University-level Students’ Perspective in Bangladesh
Abstract: Coronavirus disease has disrupted the global education system in the year 2020. An online teaching platform was the only alternative to the face-to-face classroom teaching to continue educational activities. The main purpose of the study was to assess the quality of online education from the perceptive of university-level students in Bangladesh. The research found that the class materials, the interaction between teacher and students, interaction among students, technical support availability …
Published in Research & Reviews : Journal of Statistics Read article
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A Overview of Free Space Optical Communication (FSO)
Abstract: Free Space Optical communication (FSO) is a wireless communication system that employs light propagation across free space to transport data between two sites without the usage of fibre optic cables. It uses either lasers or light emitting diodes (LEDs) for high speed data transmission with enormous bandwidth, which makes it a desirable solution for modern communication systems. The FSO provides many advantages such as minimal installation cost, excellent security, licence …
Published in International Journal of Optical Innovations & Research · Vol. 4, Issue 1, 2026 · pp. 31–35 Read article
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Image Compression via Non-separable Discrete Fractional Fourier Transform
Abstract: The main idea behind image compression is to reduce the bandwidth for transmission and required space for storage. Thus, image compression is of great importance. In this paper we present the image compression technique using Non-Separable Discrete Fractional Fourier Transform (NSDFrFT). Numerical simulation results suggested that image compression method using NSDFrFT as transform technique gives better performance for images when compression ratio is high in comparison to DFrFT and JPEG. …
Published in Research & Reviews: Discrete Mathematical Structures · Vol. 2, Issue 3, 2015 · pp. 1–9 Read article
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Analysis of a Dual Band Stacked Patch Antenna with Multiple Notches
Abstract: This paper presents the design and analysis of compact dual band stacked microstrip patch antenna for various applications. The designed antenna structure represents the dual frequency band operation and it covers the S band, frequency applications such as Wi-Fi, surface ship radar, weather radar, broadcasting in the range from 2.31GHz to 3.77GHz frequency band, radar, satellite based digital audio radio service (DARS) communication and some communication satellites. The parameters of …
Published in Journal of Microwave Engineering and Technologies · Vol. 4, Issue 1, 2017 · pp. 23–28 Read article
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Reconstruction Techniques for Super Resolution Using Low Resolution Images
Abstract: The aim of Super Resolution (SR) reconstruction is to restore High Resolution (HR) image using information obtained from many degraded and aliased Low Resolution (LR) images. SR is signal processing for bandwidth expansion beyond the pass band of the imaging hardware system by using spatio-temporal information available from LR images. Over last three-decade various researchers contributed in the field of SR, but all are intuitive SR mechanisms. This paper employs …
Published in Research & Reviews: A Journal of Embedded System & Applications · Vol. 9, Issue 2, 2021 · pp. 5–13 Read article
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Analysis of a Communication Link Performance Across Various Rayleigh Channels in Tropical Climates
Abstract: Tropical regions are characterized by intense and persistent rainfall throughout most of the year, and this environmental condition significantly influences wireless communication performance. The continuous presence of heavy precipitation weakens, scatters, and disrupts radio frequency signals, causing noticeable attenuation during transmission from the source to the destination. As a result, reliable communication becomes challenging, particularly for modern high-speed systems such as 5G networks. To address this limitation and enhance communication …
Published in Journal of Communication Engineering & Systems · Vol. 16, Issue 1, 2026 · pp. 06–12 Read article