Power control and RB allocation for LTE uplink

Abstract

According to 3GPP standards, the Single Carrier Frequency Division Multiple Access (SC-FDMA) was adopted for Uplink transmission in LTE networks. As multiple mobiles may have access to neighboring base stations simultaneously, the inter-cell interferences are inevitable with this technique and the system throughput is impacted. To mitigate the inter-cell interference and improve, therefore, the system performance, severe schemes have been proposed. However, these schemes target either adapting the power control in mobile stations (e.g. Fractional Power Control technique) or improving the Resource Block (RB) allocation (e.g. Universal Frequency Reuse technique). In this paper, we propose two new techniques to reduce the inter-cell interferences namely: (i) Dynamic Fractional Power Control and (ii) a Resource Block Allocation based on Genetic Algorithm. In addition, we advocate that, by combining these technique, the system can achieve a better throughput.