Error Rate Performance of SC-FDMA with Channel Dependent Subcarrier Scheduling

Single Carrier Frequency Division Multiple Access (SC-FDMA) is a promising technique compared to Orthogonal Frequency Division Multiple Access (OFDMA) for uplink transmission in 3rd Generation Partnership Project(3GPP) Long Term Evolution(LTE) because of its low peak to average power ratio (PAPR). Being a multiple access technique, resources are required to be distributed among various users. In this paper, we have used Zero Forcing noise amplification factor (beta(ZF)) for scheduling subcarrier allocation in SC-FDMA systems unlike using the summation of amplitude response over different subcarriers. Using beta(ZF) for scheduling gives more exact information about channel condition over different sub bands for different users. For scheduling purpose we have used, Round Robin, Greedy Chunk and Proportionally Fair algorithms and we have compared the SER results for the different number of users including maximum possible users transmitting simultaneously. The effect on capacity and throughput over error performance has been observed earlier. In this work, the effects of different channel-dependent scheduling schemes on error rate performance of SC-FDMA have been evaluated.