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For orthogonal frequency division multiplexing (OFDM) system, several Peak-to-average power ratio (PAPR) reduction schemes have been presented in recent years. To better handle dispersive channel, Space frequency block code (SFBC) MIMO-OFDM is preferred. In this paper space frequency block code (SFBC) is for reducing PAPR using Cooperative partial transmit sequence. The Co-operative partial transmit sequence (Co-PTS) PAPR scheme is designed to suppress peaks in SFBC MIMO-OFDM signal.