http://dspace.ewubd.edu:8080/handle/2525/2988 2026-04-04T15:00:35Z http://dspace.ewubd.edu:8080/handle/123456789/3342 Study of AQM Based Congestion Control in LTE Network Hasan, Abu Kamal; Khan, Md. Foysal Wireless communication is the heart of all the modern communication system. This communication is mostly all about to wireless communications. In wireless communication, different modulation methods are playing the vital roles. With the advancement of the Long‐ Term Evolution (LTE) network and smart‐phones, most of today’s internet content is delivered via cellular links. Due to the nature of wireless signal propagation, the capacity of the last hop link can vary within a short period of time. In our simulations, we demonstrate that the performance of different schedulers can be enhanced via proper dropping function. This thesis submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Electronics and Telecommunication Engineering of East West University, Dhaka, Bangladesh 2018-02-23T00:00:00Z http://dspace.ewubd.edu:8080/handle/2525/3058 Study on Range Free Localization in Wireless Sensor Network (WSN) Bhuiyan, MD. Hasibul Islam; Bhuiyan, Md. Tanvir Ahmed The position accuracy of range free localization is a fundamental problem in Wireless Sensor Networks (WSNs). The accuracy of the localization algorithm greatly impacts the performance of the localization dependent protocols and applications, such as routing and storage. Most of the range free localization algorithms are designed by assuming that the sensor nodes are deployed in regular areas without any obstacles. This assumption does not reflect the real-world conditions, especially for outdoor deployment of WSN. In this paper we propose a novel scheme called Range Free Angle Calculation (RFAC) based Sensor Localization in WSNs, which can greatly reduce the localization error in the irregular deployment areas. We estimate the average hop distance by selecting the middle of the transmission path between every two anchor pairs one by one. Then the estimated hop distance is adjusted by the angle between the anchor pairs to that selected middle point. The simulation results show that RFAC achieves significant improvement in localization accuracy in anisotropic WSNs This thesis submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Electronics and Telecommunication Engineering of East West University, Dhaka, Bangladesh 2018-01-10T00:00:00Z http://dspace.ewubd.edu:8080/handle/2525/3057 Performance Analysis of dipole antenna & patch antenna around 2.4GHZ Shawon, Mamunur Rashid; Aktar, Sharmin The research work that is to be presented is based on the study and designing of antenna system for wireless RF energy harvesting for domestic or indoor environments. An introduction to the essential prerequisites have been presented prior to the work along with the literature survey that went in and thus, the main research work was presented along with the different tests and the various results from both simulations as well as results. The main research work is divided into two parts.  The 1st part describes about the design and analysis of the antennas.  The 2nd part describes about the results as well as efficiency of the antennas in real world. This thesis submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Electronics and Telecommunication Engineering of East West University, Dhaka, Bangladesh 2018-01-10T00:00:00Z http://dspace.ewubd.edu:8080/handle/2525/3056 Study on Gas Sensor and Its Application as a IOT Device Waaje, Abdul; Islam, J.M Saiful; Akter, Tamanna This paper reviews the gas sensors according to the hazard limits and introduces a model of IOT based gas sensor. It is also containing a market review based on previous year’s gas sensor global market, nevertheless special types of gas sensors also noted in this paper. According to WHO the world is facing a tremendous climate change in recent years, which mainly focused on the increasing number of hazardous gases limit in atmosphere. Moreover, the EU also declares to fulfil worker safety from the hazardous effect from the poisonous gases of production wastes. So it can be said that it is the alarming period of being aware and acquire knowledge about the gases, importantly how to get primary solution of it. Study of hazardous gases, specially their hazardous limits and the detection process of them can be a primary solution of being aware of any miserable explosion occurred by hazardous gases. This paper will help to give a clear overview of this kind of situation. Moreover, this paper can be a study of gas sensors which will be helpful for our upcoming global changes. This thesis submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Electronics and Telecommunication Engineering of East West University, Dhaka, Bangladesh 2018-02-13T00:00:00Z