Constrained optimization of femtocell deployment in cellular network

D.Phil. (Electrical and Electronic Engineering)Abstract: In this thesis, we aim to optimize femtocell deployment under the constraint of interference among the femto users in a cellular network, which will It improves the performance of network coverage in an indoor environment. Commonly, wireless networks are often used by macrocell for network coverage, data usage and voice calling between the outdoor and indoor environments. This macrocell network centred on so-called homogeneous systems involves many macrocell base stations inside a vast network system. To accommodate the many numbers of users, especially areas where it is thickly populated, where there is a lack of capacity of macrocell base stations and quality of performance to bear the increase in network traffic. However, the indoor users would probably encounter weak signal strength and slow network coverage, broken communication due to losses and dead spots in the house environment. Thus, the solution to these challenges dominate the indoor environment and usually the cellular networks, the mobile provider is encouraged to find an alternative technology that will improve the system performance. The introduction of femtocells brings an excellent outcome for both the mobile provider and subscriber of the system. The femtocell is designed for an indoor environment as a signal booster, the purpose of voice calling, data traffic and other uses. It applies to household and office environment, and it offers improved network performance for all users. Nevertheless, the benefits of femtocell networks come with different challenges that deteriorate the system operation and quality of service. The primary concern of all mobile provider, academic and the researcher is to explore the deployment of the femtocell in an indoor setup. In summary, in this the thesis, we determine ways to address the optimization of femtocell under the constraint of interference. The utility function was used to achieve an optimal network coverage for the deployment of femtocell base stations, and whereby it operates on fairness among FBSs users. We simulate and illustrate the power and the cost. These ensure the point of resource fairness that improved the cellular network for optimal deployment of the femtocells