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This paper enhances SeLected Mapping (SLM) and Partial Transmit Sequence (PTS) which are known as PAPR reduction methods for OFDM. And comparison of both PTS and SLM technique discussed. Multicarrier systems suffer from a high Peak-to-Average power Ratio (PAR) of their transmit signal as large signal peaks lead to power inefficiency of the amplifiers. This issue becomes even more serious in a multi-antenna transmitter. To increase power efficiency, a PAPR reduction scheme must be applied at the transmitter. Many methods have been proposed to solve this problem, but the most of them decrease high Peak-to-Average Power Ratio (PAPR) as well as the data rate.