Browsing by Author "Hasan, Md. Mehedy"

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QoS-aware Channel Allocation in Directional Wireless Sensor Networks
(East West University, 2018-09-22) Tithi, Sharmin Sulatana Sattar; Hasan, Md. Mehedy; Hoque, Monica
In WSNs, majority of the channel allocation mechanisms considered energy efficiency as the many objective and assumed data traffic with similar priority. However, the introduction of image and video sensors demands certain QoS from the channel allocation mechanism and the underlying network. Managing real-time data requires both energy efficacy and QoS assurance. In this paper, we first present a novel QoS aware channel allocation algorithm, QDCA (QoS-aware Channel Allocation in Directional Wireless Sensor Networks), that supports high data rate for real-time traffic. By exploiting node clustering and directional communication, the channel is allocated dynamically by mapping the data priority requirements of the transmitting to the appropriate channel. The proposed mechanism works in distributed manner to ensure bandwidth and end-to-end delay requirements of real-time data. At the same time, the throughput of non-real-time data is also maximized. We have also proposed an improved QDCA mechanism, IQDCA, that enhances data throughput by inducing little computational and communication overhead. Results evaluated in simulation shows that QDCA and IQDCA mechanisms exhibit enhanced performance in terms of average delay, throughput and fairness.
Study of the Solar Irradiation Pattern of Bangladesh for Electricity Generation
(Daffodil International University, 2020-02-10) Hasan, Md. Mehedy; Rony, Md. Rashaduzzaman
Everyday electric power demand is increasing in present era. Beside that require of present energy resources lead today’s engineers and scientists to think about the substitute sources of energy. The solar energy is a potential source for producing electric power. Now this solar system is gaining its popularity more and more. In home system applications, the use of solar energy is also attractive. The following research paper is based on analyzing the solar irradiation model of Bangladesh for electricity generation. Irradiation and power are talked about with their optimum capacity. Power is one of the most important factors in developing country and for sustainable economy. Like the rest of the countries of the planet, in Bangladesh the demand for power is enhancing day by day. The main aim of our research is to find out the irradiation of sun in Dhaka city in the month of January and February 2019 so that the power production by the solar panel can be estimated and the data to get average irradiation and find the correlation between solar irradiation and power. By using this data we can easily understand the electricity production by SHS and create a standard form of power production of SHS in 2019.