A frequency domain fractionally-spaced CG-MOE detection technique for MC-CDMA systems

In this paper, a frequency domain fractionally-spaced conjugate gradient minimum output energy (FDFS-CG-MOE) algorithm is proposed as a new detection technique for MC-CDMA systems. The proposed technique exploits the oversampled received signals in the frequency domain before detection with the CG-MOE algorithm. Simulation results show that the proposed technique has better performance to cope with the effect resulting from frequency offset, multipath channel and near-far problem caused by powerful interfering users than the conventional CG-MOE and MOE algorithms.