The rapid growth of the digital communication in recent years, the need for high speed transmission has increased. New multicarrier modulation technique such as MIMO OFDM (Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing) is implemented. Therefore MIMO OFDM has one of the major disadvantages is that PAPR problem. MIMO OFDM system is known to have a high PAPR when compared with single carrier system. In fact the high PAPR is one of the most determined aspects in the MIMO OFDM system. The PAPR problem is more important in uplink since the efficiency of power amplifier is critical due to the limited battery power in a mobile terminal.