METHODS AND APPARATUS FOR MAXIMUM RATIO COMBINATION FOR DUPLICATED SIGNALS IN OFDMA SYSTEMS

摘要

PROBLEM TO BE SOLVED: To provide a method for processing a received orthogonal frequency division multiple access (OFDMA) signal that comprises a duplicated signal.SOLUTION: An FFT operation is performed 904 on a received OFDMA signal. Sub-carrier de-randomization is performed 906 on a frequency domain OFDMA signal. Sub-carrier de-allocation is performed 910. A look-ahead sub-carrier arranging scheme is utilized to arrange 914 sub-carriers into a duplicated format. After the arrangement into the duplicated format, equalization and combination 918 and demapping 922 are performed on the OFDMA signal. The equalization and combination are performed in accordance with a maximum ratio combining (MRC) scheme.