A Novel Frequency Domain Equalization Algorithm for SC-FDE System

Single carrier frequency domain equalization technology is an important component of physical layer technology for broadband wireless access system, which can effectively avoid the lack of great complexity for single-carrier time domain equalization, as well as the high PAPR for orthogonal frequency division multiplexing In this paper, the MMSE decision feedback frequency domain equalization (MMSE-DFE) algorithm and the LMS frequency domain adaptive equalization algorithm are researched comparably. On this basis, a new LMS decision feedback frequency domain adaptive equalization (LMS-DFE) algorithm using non-linear structure is proposed. The computer Simulation results show that the proposed algorithm can effectively update the equalizer tap coefficients by tracking the channel changes, and then lower BER are obtained.