Improving SC-FDMA Performance by Time Domain Equalization for UTRA LTE Uplink

Single carrier frequency division multiple access (SC-FDMA) is used in the uplink of the next generation mobile communications standard Long Term Evolution (LTE). Based on a complete system simulation including channel coding and automatic repeat request, we compare a minimum-mean-square error block linear equalizer with an iterative equalization in time domain using a recurrent neural network structure. Iterative equalization in time domain shows a clear performance improvement with respect to the total throughput of the system. Using the concept of turbo equalization leads to further improvements of the throughput for a wide range of signal-to-noise ratios.