http://dspace.ewubd.edu:8080/handle/123456789/2498 Sun, 05 Apr 2026 23:30:24 GMT 2026-04-05T23:30:24Z http://dspace.ewubd.edu:8080/handle/123456789/2575 A New Channel Assignment and Routing Scheme for Competitive and Cooperative Wireless Mesh Network (WMM) Islam, Khandakar Sakib Al; Hossain, Syed Abed; Chowdhury, Md. Abu Raihan With a specific end goal to keep away from transmission's crashes and enhance arrange exhibitions in remote work systems (WMNs), a solid and effective medium get to control (MAC) convention and a decent channel allotment are required. Wireless mesh networks are multi hop networks of wireless routers, where each router node is equipped with multiple radio interfaces and multiple channels are available for communication. There is an increasing interest in using wireless mesh networks as broadband backbone networks to provide ubiquitous network connectivity in enterprises, campuses, and in metropolitan areas. An important design goal for wireless mesh networks is capacity. It is well-known that wireless interference severely limits network capacity in multi-hop settings. One common technique used to improve overall network capacity is use of multiple channels. Essentially, wireless interference can be minimized by using orthogonal (non-interfering) channels for neighboring wireless transmissions. The current IEEE 802.11 standard provides several orthogonal channels to facilitate the above. Presence of multiple channels requires us to address the problem of which channel to use for a particular transmission. The method which is used to assign the proper channel to a link is called Channel Assignment. The overall objective of such an assignment strategy is to minimize the overall network interference. Since the number of radios on any node can be less than the number of available channels, the channel assignment must obey the constraint that the number of different channels assigned to the links incident on any node is utmost the number of radio interfaces on that node. Routing is the process of finding a path from a source to some arbitrary destination on the network. A routing protocol is needed whenever a packet needs to be transmitted to a destination via number of nodes and numerous routing protocols have been proposed for wireless network. These protocols find a route for packet delivery and deliver the packet to the correct destination. In this paper, a joint Channel assignment and routing protocol are proposed to ensure low interference by assigning the non-overlapping channels to the multiple radios. This thesis submitted in partial fulfillment of the requirements for the degree of B.Sc in Electrical and Electronic Engineering of East West University, Dhaka, Bangladesh. Tue, 01 Jan 0009 00:00:00 GMT http://dspace.ewubd.edu:8080/handle/123456789/2575 0009-01-01T00:00:00Z http://dspace.ewubd.edu:8080/handle/123456789/2574 A New Routing Algorithm for Inter-cluster Load Balancing in Wireless Mesh Networks Barua, Shourov; Mohammad, Hossain; Miah, Md Mamun When MANET is connected into the Internet, the gateways are the entry points of all traffic between the hybrid networks. Usually, a large amount of traffic load may become concentrated in some gateways and congestion occurs. To resolve this problem, this thesis paper proposes a load balancing routing algorithm, called LBRA, in MANET to distribute the traffic load among multiple gateways. Through simulation, we show that the proposed algorithm can distribute the traffic load uniformly among multiple gateways and suppress the increase in the routing path length at most 20% compared to the shortest path routing. This thesis submitted in partial fulfillment of the requirements for the degree of B.Sc in Electrical and Electronic Engineering of East West University, Dhaka, Bangladesh. Thu, 01 Jan 0005 00:00:00 GMT http://dspace.ewubd.edu:8080/handle/123456789/2574 0005-01-01T00:00:00Z http://dspace.ewubd.edu:8080/handle/123456789/2564 Simulation-Based Proportional Study of Routing Protocols for MANET Hasan, Md. Nazmul; Sadekin, Md. Emil; Ahmed, Faisal Wireless ad-hoc networks have recently gained significant research attention due to their vast potential of applications in numerous fields. Multihop routing is a significantly important aspect which determines, to a large extend, the overall performance of the network. A number of routing protocols have been proposed for routing in wireless ad-hoc networks with focus on optimizing different aspects of the network routing. This report focuses on studying two popular protocols for wireless networks: Ad-hoc On Demand Distance Vector (AODV) and Optimized Link-State Routing (OLSR). The two protocols belong to different classes of routing categorization. AODV is a popular on-demand (reactive) routing protocol whereas the OLSR is a popular link-state based proactive routing protocol. The technical aspects of the two protocols shall be studied while highlighting the differences between the two and simulation based performance comparison of the two protocols shall be carried out under varying traffic and network conditions using the Network Simulator This thesis submitted in partial fulfillment of the requirements for the degree of B.Sc in Electrical and Electronic Engineering of East West University, Dhaka, Bangladesh. Tue, 01 Jan 0004 00:00:00 GMT http://dspace.ewubd.edu:8080/handle/123456789/2564 0004-01-01T00:00:00Z http://dspace.ewubd.edu:8080/handle/123456789/2563 Surface Texturing Effects on the Performance of a Solar Cell Rahman, Md. Habibur; Akter, Mst. Juhana; Islam, Sohan Md. Azizul In modern technology, people are becoming more and more dependent on solar energy. For this reason, solar cell is needed to be more improved. Solar cell is basically useful for its cost effectiveness and time saving capabilities. To improve efficiency, reflection of light should be reduced. Surface texturing is used to reduce light reflections and enhance light trapping. In this thesis, surface texturing is used on different layers of a GaAs solar cell. Some basic parameters of textured solar cell are studied here such as short circuit current, open circuit voltage, maximum power, external quantum efficiency, photon absorption rate and fill factor, and we compare them with the results of a non-textured solar cell. ATLAS and DEVEDIT of SILVACO tool are used for the simulation of these parameters. Standard AM 1.5 spectrum is used in this thesis. Maximum power for non-textured solar cell and textured solar cell is 21.08 mW/cm2 and 24.65 mW/cm2 respectively. Also, efficiency for non-textured solar cell and textured solar cell is respectively 21.08% and 24.65%. So, it can be shown that textured solar cell has better performance than non-textured solar cell. This thesis submitted in partial fulfillment of the requirements for the degree of B.Sc in Electrical and Electronic Engineering of East West University, Dhaka, Bangladesh. Tue, 01 Jan 0009 00:00:00 GMT http://dspace.ewubd.edu:8080/handle/123456789/2563 0009-01-01T00:00:00Z