Bachelor of Electronic and Telecommunication Engineering (ETE)

Permanent URI for this collectionhttp://dspace.iiuc.ac.bd/handle/88203/296

Browse

Start date: 2010End date: 2019

Search Results

Now showing 1 - 10 of 11
  • No Thumbnail Available
    Item
    Design and Evaluation of 20Gbps Inter Satellite Optical Wireless Communication System for improved distance and performance
    (Department of Electronic and Telecommunication Engineering, 2019-09) Faisal, Mohammad; Noman, Kazi Ishtiak Hasan
    In this present day world, satellite innovation plays a significant role. It is necessary to be sent data which obtained from the different orbits of satellites. So, it is required to have a link between the satellites to send these data. Hence, Inter satellite Optical Wireless Communication (Is-OWC) approach arises. Is-OWC system is high, small size, bandwidth, and light weight, low power and low cost and is therefore chosen over existing microwave satellite systems for reaching in space in the future. However the system has various limitations such as attenuations due to climate conditions, glimmers which limit its performance and diminishes its accessibility.The system also has trade-offs in the efficient design for higher distance coverage with better performance. In this paper, a 20 Gbs Is-OWC system with improved performance and longer distance is introduced. The proposed system is designed and evaluated using Optisystem Software 16 version. The proposed system provides better performance of Q factor and BER for the distance of 20,000 km. The distance is improved by using optical amplifier in the transmitter.
  • No Thumbnail Available
    Item
    Investigation on Wind Power Generation for Dhaka Chittagong Highway Based on Vertical Turbine
    (Department of Electronic and Telecommunication Engineering, 2019-10) Billa, Md.Bakey; Shawon, Md. Omar Faruk
    Wind power or wind energy is the use of air flow through wind turbines to provide the mechanical power to turn electrical generators and traditionally do other work. Wind power is a sustainable and renewable alternative for burning fossil fuels, and has much less effect on the environment. Electrical energy demand has been continuously increasing. Power generation using wind turbines is becoming viable solution as there is a demand for cleaner energy sources. Vertical axis wind turbines (VAWTs) are more efficient than the horizontal axis wind turbines (HAWTs) for low wind speed applications because of their ability to capture wind flowing from any direction. Therefore, VAWT systems are more suitable for residential and urban applications as they are universally adaptable. Major limitation observed in VAWT is high drag and turbulent force produced by the blade. In this thesis we are utilizing the air force that is generated due to vehicle velocity in Dhaka-Chittagong highway. We are using NACA-2424 as airfoil. NACA 2424 airfoil is selected and analyzed within the required range of Reynolds numbers and wind speeds in Q-Blade software. It is found that the power output is 100W at wind speed of 6 m/s. The estimated price per turbine is approximately 30500 takas only.
  • No Thumbnail Available
    Item
    An Ultra-compact Multiband Antenna for 5G massive MIMO Applications Below 6 GHz
    (Department of Electronic and Telecommunication Engineering, 2010) Razin, Kazi Fatin Intesar
    In this paper, we have designed a compact antenna for massive MIMO applications. The design has been carried out using various parameters such as left-hand tweak and right-hand tweak. The simulations were carried out with different hands simultaneously. The design and simulation of the proposed MIMO antenna are performed in the CST Studio Suite. The antenna is designed at an operational frequency of 2.6 GHz with a dielectric substrate and a conducting ground plane (W×L=19×38.2 mm2). The material of the substrate is FR-4 (lossy), with a relative permittivity of 4.3, a height of 1.6 mm, and a loss tangent of 0.025. The material of the ground plane is copper (annealed) with a thickness (t) of 0.035 mm, and the ground plane is cut into a smaller one to achieve a broader bandwidth. The optimized dimensions of the antenna are Wp=17.17 mm and Lp=22.13 mm. The width of the feedline (Flow) connected to the patch is 2.42 mm, and the length (Fl) is 14.93 mm.
  • No Thumbnail Available
    Item
    Design and Implementation of a Home Automation System Using IoT
    (Department of Electronic and Telecommunication Engineering, 2019-10) Ziaul Abedin Tanvir, T153026; Anwarul Ashadozzaman Nur Sohag, T153040
    Design and Implementation of a Home Automation System Using IoT Home Automation System gains popularity due to communication technology advancement. Smart home is one of the Internet of Things applications that facilitates the control of home appliances over the Internet using automation system. This paper proposes a low-cost Wi-Fi based automation system for Smart Home in order to monitor and control home appliances remotely using IoT based application. An Arduino Mega microcontroller provided with Wi-Fi module is utilized to build the automation system. In addition, several sensors are used to monitor the temperature, humidity and motion in home. A relay board is exploited to connect the home automation system with home under controlled appliances. The proposed automation system can easily and efficiently control the electrical appliances via Wi-Fi. This project proposes a low cost, secure, universally accessible, auto-configurable, remotely controlled solution. The approach discussed in the paper is original and Home Automation System achieved the mark to control home appliances remotely using the Wi-Fi technology to connect system parts, satisfying user needs and requirements. Wi Fi technology capable solution Home Automation System proved to be controlled remotely, provide home security and it is low cost as compared to the previous systems. The system design and architecture were discussed, and prototype presents the basic level of home appliance control and remote monitoring Home Automation System been implemented. Finally, the proposed system is better from the scalability and flexibility point of view than the commercially available home automation systems. Home Automation System gains popularity due to communication technology advancement.
  • No Thumbnail Available
    Item
    Design and Evaluation of 20Gbps Inter Satellite Optical Wireless Communication System for improved distance and performance
    (Department of Electronic and Telecommunication Engineering, 2019-09) Mohammad Faisal, T151022; Kazi Ishtiak Hasan Noman, T151009
    In this present day world, satellite innovation plays a significant role. It is necessary to be sent data which obtained from the different orbits of satellites. So, it is required to have a link between the satellites to send these data. Hence, Inter satellite Optical Wireless Communication (Is-OWC) approach arises. Is-OWC system is high, small size, bandwidth, and light weight, low power and low cost and is therefore chosen over existing microwave satellite systems for reaching in space in the future. However the system has various limitations such as attenuations due to climate conditions, glimmers which limit its performance and diminishes its accessibility.The system also has trade-offs in the efficient design for higher distance coverage with better performance. In this paper, a 20 Gbs Is-OWC system with improved performance and longer distance is introduced. The proposed system is designed and evaluated using Optisystem Software 16 version. The proposed system provides better performance of Q factor and BER for the distance of 20,000 km. The distance is improved by using optical amplifier in the transmitter
  • No Thumbnail Available
    Item
    Investigation on Wind Power Generation for Dhaka Chittagong Highway Based on Ve
    (Department of Electronic and Telecommunication Engineering, 2019-10) Bakey Billa, T-151010; Omar Faruk Shawon, T151039
    Investigation on Wind Power Generation for Dhaka Chittagong Highway Based on Ve Wind power or wind energy is the use of air flow through wind turbines to provide the mechanical power to turn electrical generators and traditionally do other work. Wind power is a sustainable and renewable alternative for burning fossil fuels, and has much less effect on the environment. Electrical energy demand has been continuously increasing. Power generation using wind turbines is becoming viable solution as there is a demand for cleaner energy sources. Vertical axis wind turbines (VAWTs) are more efficient than the horizontal axis wind turbines (HAWTs) for low wind speed applications because of their ability to capture wind flowing from any direction. Therefore, VAWT systems are more suitable for residential and urban applications as they are universally adaptable. Major limitation observed in VAWT is high drag and turbulent force produced by the blade. In this thesis we are utilizing the air force that is generated due to vehicle velocity in Dhaka-Chittagong highway. We are using NACA-2424 as airfoil. NACA 2424 airfoil is selected and analyzed within the required range of Reynolds numbers and wind speeds in Q-Blade software. It is found that the power output is 100W at wind speed of 6 m/s. The estimated price per turbine is approximately 30500 takas only
  • Thumbnail Image
    Item
    Performance Evaluation of MIMO in Urban Microcell for Dhaka City at 28 GHz Frequency
    (IIUC Central Library, 2018-07) Kamrul, MD. Imtiaz; Haque, Kazi Mazharul
    5th generation cellular network is the upcoming revolution in the cellular communication world. It tends to operate in millimeter wave frequency to increase the usage for the next decade. While the researcher focuses on optimising spectral efficiency and increases bandwidth for incredible demand, only the mmWave spectrum have capability that can accommodate the ever-expanding consumption for the wireless network. The 28 GHz frequency band is a serious candidate for mmWave communication with more than 3 GHz of available bandwidth. The line of Sight (LOS) is a direct line between the radio transmitter and receiver and many types of radio transmissions depend on it. Unfortunately, for arbitrary transmission networks, obstacles are commonly caused by non-line-of-sight (NLOS) conditions. This thesis presents a proper number of selection antenna element in 28 GHz frequency in NLOS and LOS environment and their characteristics by analysis of different channel parameter in Urban microcell scenario for Dhaka city. This thesis also discusses the radio propagation mechanisms that impact the performance of the network in the form of time delays, received power, azimuth AoD, Elevation AoD, Azimuth AoA, Elevation AoA, path-lost and RMS delay in LOS and NLOS environments.
  • Thumbnail Image
    Item
    Implementation of Dynamic Multipoint VPN over IPsec for Secure Enterprise Network
    (IIUC Central Library, 2018-07) Alam, Towhidul; Hamid, Kawsar
    The Purpose of this thesis is to promote an improvement of availability and remote access for secure enterprise network infrastructure by using dual hub dual DMVPN(Dynamic Multipoint VPN).using multipoint GRE (mGRE) over IPSec data transmission of enterprise network are reliably secure. DMVPN is a technology that implements different protocols concept such as IPSec encryption, next hop resolution protocol (NHRP), generic routing encapsulation (GRE) and provides dynamic and static IPSec tunnel between spoke to hub, spoke to spoke. In this book, we implement the technique of DMVPN to constructs secure enterprise network of enterprise organization and by using hot standby routing protocol (HSRP) to overcome the failure network. The simulation was done by GNS3 and packet capture by wire shark software. From the result of the test, DMVPN technology with HSRP protocols completely fulfills the real necessity that undertaking utilizes a system for enterprises. It offers a mode which is a fast, advantageous and practical venture and accessible up time network to an endeavor for building a safe and dependable network.
  • Thumbnail Image
    Item
    Design and Performance Evaluation of a Campus Network Based on Different Routing Protocols
    (IIUC Central Library, 2018-09) Refat , Chowdhury Mohammad Masum
    A Campus Area Network (CAN) can be characterized as a Local Area Network (LAN). Generally, it is a network which connects various entities of an office e.g. various infrastructural entities of a university campus. In this paper, it is designed a new CAN topology and analyzed the performance of CAN by considering Routing Information Protocol (RIP), Enhanced Interior Gateway Routing Protocol (EIGRP), and Open Shortest Path First (OSPF) routing protocols. The simulation results were analyzed with a performance comparison among these three routing protocols. It is found that the proposed design model reduces the cost from bandwidth perspective and also provides values for various network parameters which lead to better Quality of Service (QoS) in the CAN.
  • Thumbnail Image
    Item
    Performance Investigation of Three Precoding Methods for Maximal Energy Efficiency in Next Generation Wireless Communications System
    (IIUC Central Library, 2018-09) Kabir, Md. Humayun
    Nowadays, Energy Efficiency (EE) has become a buzzword for future wireless communication systems. Consequently, Massive Multiple Input and Multiple Output (MMIMO) technology have attained a great attention for Multi-User Communication scenario. MMIMO systems are crucial to maximizing energy efficiency (EE) and batterysaving technology. Achieving EE without sacrificing the quality of service (QoS) is increasingly important for mobile devices. We first derive the data rate through three linear precoding: Maximum Ratio Transmission (MRT), Zero-Forcing (ZF), and Minimum Mean Square Error (MMSE). Performance EE can be achieved when all available antennas are used and when taking account of the consumption circuit power ignored because of high transmit power.The aim of this work is to demonstrate how to obtain maximum EE while minimizing power consumed, which achieves a high data rate by deriving the optimal number of antennas and number of users in the massive MIMO system. The consumed power of the system includes transmitting power, circuit power consumption, and idle power consumption. The circuit power consumption dominates the system power consumption when the transmitter is equipped with the massive number of antennas. Hence, to analyze this problem, we propose a power consumption model. Maximized EE depends on the optimal number of antennas and determines the number of active users that should be scheduled in each cell. The results show the optimization of Energy with respect to the number of functioning mobile users, number of assigned base stations and launch input power in the system respectively.