LTE OFDMA ağları için deneyim tabanlı dinamik hücreler arası bantgenişliği paylaşımı

In recent years, developments in telecommunications systems have led to the appearance of new demands. For wireless communication systems users, data transmission speed and data sharing have become the most important issues. Thanks to the technological advancements that have been experienced every day, the data transmission speeds have reached unpredictable dimensions. When considering the users' demands and limitation of the frequency spectrum, it is clearly understood the importance of effective way of resource allocation, resources distribution and efficient use of existing resources. At the same time, scientists want to avoid intra-cell interference. For this reason, orthogonal frequency division multiple access (OFDMA) in Long Term Evolution (LTE) can minimize intra-cell interference using sub-carriers that are orthogonal to each other. But, inter-cell interference, limits the downlink performance of cellular systems. To minimize inter-cell interference, several interference cancellation techniques have been analyzed and compared. One of these techniques has been analyzed in detailed and some improvements made in this technique. The first objective of this technique is to minimize inter-cell interference by developing the frequency reuse technique. Also, it aims to increase the throughput and signal to interference plus noise ratio (SINR) of the entire setup and prevents the overload of the cells by allocating and reallocating the bandwidth dynamically between the cells. The last target of the proposed technique is to progress a fairness scheduler algorithm among users by optimizing the base station schedulers that is called experience-based packet scheduler (EBPS). Finally, combining all these targets, I proposed the algorithm called Experiment Based Dynamic Soft Frequency Reuse (EBDSFR) in this thesis. First of all, EBDSFR technique has been compared with Reuse-1, Reuse-3, Fractional Frequency Reuse (FFR), and Soft Frequency Reuse (SFR). Secondly, I compared our proposed technique with the Dynamic Inter-cellular Bandwidth Fair Sharing FFR (FFRDIBFS) and Dynamic Inter-cellular Bandwidth Fair Sharing Reuse-3 (Reuse3DIBFS).