Simplified way of LMMSE algorithm

Because of enabling to provide high-rate and high-quality mobile communication service in mobile wireless communication, Orthogonal Frequency Division Multiplexing (OFDM) system has become the focus of study recently. Estimating and equalizing channels in OFDM system is one of the technical difficulties. In this paper, aiming at decreasing the high computing complexity degree of LMMSE algorithm, one simplified way is proposed that the LMMSE algorithm be simplified through the self-correlation matrix of channel impulse response. In other words, channel correlation is neglected. It can be seen from the simulation results that the method can simplify the computing complexity degree to some extent and offer relatively better bit error performance.