Impact of Adaptive Modulation and Coding Schemes on Bit Error Rate for System Performance in the Uplink LTE System

摘要

Long Term Evolution (LTE) is a cellular network technology aims to render enriched data services to users at lower latency and higher (multi-megabit) throughput. The higher system throughput with more reliable transmission is achieved by the support of Adaptive Modulation and Coding (AMC) schemes, scheduling algorithms, multi-antenna techniques etc. The AMC schemes substantially increases the system throughput by reducing the Bit Error Rates (BER) and by adjusting the transmission parameters based on the link quality. The scheduling algorithms also enhance the throughput of individual users, as well as the cell throughput by allocating the resources among the active users. Hence in this paper, an attempt has been made to study and evaluate the effects of AMC schemes such as QPSK, 16-QAM and 64-QAM on uplink LTE system performance for Proportional Fair (PF) and Round Robin (RR) scheduling algorithms using QualNet 7.1 network simulator. The performance metrics considered for the simulation studies are BER, cell throughput, average delay and average jitter