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Multicarrier modulation is an attractive technique for fourth generation wireless communication. Orthogonal Frequency Division Multiplexing (OFDM) is multicarrier transmission scheme. Its high PAPR (Peak-to-Average Power Ratio) of the transmitted signal is a major drawback. We propose to reduce PAPR by probabilistic method of modified Partial Transmits Sequence (PTS), using forward error-correcting codes (FECs) such as Golay codes are employed by finding the optimum phase weighting factors and the sub block partition schemes that can achieve the lowest PAPR and computational complexity of MIMO-OFDM wireless systems. Simulation results show that the modified PTS technique achieves better PAPR reduction with reduced computational complexity of PTS scheme in the MIMO-OFDM systems.

Modified PTS for PAPR Reduction in MIMIO-OFDM Wireless Systems