http://dspace.ewubd.edu:8080/handle/123456789/1643 Sat, 04 Apr 2026 15:14:23 GMT 2026-04-04T15:14:23Z http://dspace.ewubd.edu:8080/handle/123456789/2174 Comparative Performance Analysis of Static and BGP Route in a Network using Network Simulator (NS2) Tonny, Afroza Shultana Every small and large organization use computer network to share their resources. The size of network is increasing day by day. They are connecting their network to the public network such as Internet. They are scaling up their network Local Area Network to Metropolitan Area Network even Wide Area Network also. The aim of the proposed thesis is to analysis the network performance for both static and BGP route in a network, compare them finally took the best one and enhance the network performance. For performance analysis I have simulated a network topology for both Static and BGP route using an open source simulator NS2. In this research work two types of routing protocols (Static & BGP) have been analyzed to find their capabilities and deficiencies and suggest the most efficient between them. Analysis reveals that BGP routing protocol is better than Static in terms of throughput and delay. This thesis submitted in partial fulfillment of the requirements for the degree of Masters of Science in Telecommunication Engineering of East West University, Dhaka, Bangladesh Tue, 01 Jan 0009 00:00:00 GMT http://dspace.ewubd.edu:8080/handle/123456789/2174 0009-01-01T00:00:00Z http://dspace.ewubd.edu:8080/handle/123456789/2124 Performance Analysis of Channel Condition & Channel Model of LTE in Various Transmission Mode in Bangladesh Chowdhury, Rashedul Haque; Rahman, Moutosi Long Term Evaluation(LTE) is an emerging 4G wireless technology. Multiple-Input Multiple-Output (MIMO) systems are a primary enabler of the high data rate south to be achieved by LTE . In LTE /LTE -advanced standards, the physical layer is mapped into multiple transmission modes(TM) and each TM should be dynamically selected depending on the time-varying MIMO channel. Besides the single antenna SISO transmission (TM1), multi element antenna (MIMO) technology such as Open Loop Spatial Multiplexing (OLSM) and Close Loop Spatial Multiplexing (CLSM) transmission are also specified by the 3GPP standard for LTE downlink transmission. According to LTE Release 9 there are 7 MIMO configurations from mode 2 to 8. An LTE base station is expected to select and switch among these transmission modes based on channel quality feedback like Channel Quality Indicator (CQI) . In this paper we have investigated the effect of different channel conditions at different SNR levels on the performance achieved through transmission mode 1 to 4 . The simulation output shows that the mode 3 and 4 which are open loop and close loop spatial multiplexing respectively using 4 transmitting antenna outperforms all other mode in terms of high throughput at very reasonable BLER. This thesis submitted in partial fulfillment of the requirements for the degree of Masters of Science in Telecommunication Engineering of East West University, Dhaka, Bangladesh Sun, 01 Jan 0008 00:00:00 GMT http://dspace.ewubd.edu:8080/handle/123456789/2124 0008-01-01T00:00:00Z http://dspace.ewubd.edu:8080/handle/123456789/2120 Design, Simulation and Optimization of the efficiency of CdS –CdTe Solar Cell Barai, Nipun; Khan, Shafin Mahbub Everything in this age of science and technology is dependent upon energy. A lot of the sources of energy like fossil fuels pollutes the environment, is non - renewable and is quickly and easily used up like sands in an hourglass. On the other hand, nuclear energy, once considered to run the world of the future is slowly ditched after the incidents of Chernobyl and recent incidents of the tsunami in Fukushima. These days, one of the known, efficient, renewable source of energy where the bulk of the research is focused on is the light from the sun. That’s how solar cells came into existence. In the solar cells of today, mostly Silicon is used because of its abundance and its minimal price. Works are going on with other materials suitable for displacing silicon. One such candidate is CdS and CdTe, about whom this whole thesis is based upon. CdS – CdTe solar cells provide similar efficiencies when 1/100th of thickness of Silicon and with prices affordable for common citizen. In this specific thesis, by using 55 nm CdS, 1 μm CdTe and a back contact made up of Iridium, an efficiency of 27.056% was achieved with other parameters as Voc = -1.151 V, Jsc = 26.315 mA/cm2, FF = -0.893. All the simulation has been carried out by Analysis of Microelectronic and Photonic Structures (AMPS – 1D) simulator. This thesis submitted in partial fulfillment of the requirements for the degree of Masters of Science in Telecommunication Engineering of East West University, Dhaka, Bangladesh Sun, 01 Jan 0008 00:00:00 GMT http://dspace.ewubd.edu:8080/handle/123456789/2120 0008-01-01T00:00:00Z http://dspace.ewubd.edu:8080/handle/123456789/2119 Reflection and Absorption Contribution to the EMI Shielding Efficiency of SWCNT-Polymer Composites Ch., Md.Abdul Quayum; Akther, Sharmin Materials that protect against electromagnetic interference (EMI) with high shielding effectiveness (SE) have gained great importance due to their applications in telecommunication sectors , electronic, aerospace, medical, and military devices. Metals perform well as EMI shields, but they are relatively heavy and inflexible, with greater sensitivity to oxidation. In contrast, the prototyping of polymer conductive composites suggests that they are more chemically stable, cost-effective, and easier to process as shielding materials than their metal counterparts. Metal polymer nano composites are advanced materials for high electrical conductivity, which are critical for the synthesis of conductive polymer nano composites using extremely low amounts of conductive filler. A nano tube SWCNT-polymer system which utilizes functional group interactions for achieving uniform dispersion with low electrical percolation concentrations and enhanced microwave shielding effectiveness and light weight than other shielding materials . Analysis of the total observed EMI shielding was used for investigating the mechanisms of absorption and reflection in the composite. The aim of this thesis is to using functionalized CNT-polymer composites together with our obtained results could be used as a basis for light-weight, high shielding efficiency materials for EMI applications. SWCNT composites with well-dispersed SWCNTs were prepared using a simple physical mixing method and increasing shielding efficiencies This thesis submitted in partial fulfillment of the requirements for the degree of Masters of Science in Telecommunication Engineering of East West University, Dhaka, Bangladesh Sun, 01 Jan 0008 00:00:00 GMT http://dspace.ewubd.edu:8080/handle/123456789/2119 0008-01-01T00:00:00Z