METHOD AND APPARATUS FOR RECEIVING MINIMUM MEAN-SQUARED-ERROR IN SINGLE-CARRIER FREQUENCY DIVISION MULTIPLE ACCESS SYSTEM

摘要

PURPOSE: A method and device for receiving a minimum mean-squared-error in a single-carrier frequency division multiple access system are provided to reduce the lowering of the performance of an SC-FDMA(Single-Carrier Frequency Division Multiple Access) receiver. CONSTITUTION: A received signal of a time domain is converted into a frequency domain by FFT(Fast Fourier Transform)(501). An MMSE equalization and detection procedure is performed by a sub carrier of a user band in the frequency domain(502). An MMSE weight vector and an MMSE weight bias are calculated in the frequency domain of the FFT converted signal. The calculated bias is normalized(503). A decoded signal is transmitted to each terminal(505).