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Assessment of LTE Uplink Power Control with Different Frequency Reuses Schemes

Single Carrier Frequency Division Multiple Access (SC-FDMA) is the access scheme chosen by 3GPP for uplink UTRAN Long Term Evolution project (LTE). As SC-FDMA provides intra-cell orthogonality, one of the main reasons for performance degradation is the Inter-Cell Interference (ICI). This degradation is accentuated by the frequency reuse of 1 deployed in the system, Since the Frequency Reuse (FR) and Power Control (PC) functionalities is a strong tool for cochannel interference mitigation, using them critical issues in cellular Orthogonal Frequency Division Multiple Access (OFDMA)/LTE networks. In this paper, we compare between the Open Loop Power Control (OLPC) and Closed Loop Power Control (CLPC) performance using different frequency reuse schemes. Simulation results show that large differences exist between the performance of different (FR) schemes and the optimal case in the overall cell throughput, as well as the cell-edge user performance. Also the closed loop power control has shown more cell and edge throughput gain over OLPC. Keywords— Open Loop Power Control; Closed Loop Power Control; Hard Frequency Reuse; Fractional Frequency Reuse; Soft Frequency Reuse.