High-speed transmission across a dispersive communication channel is made possible by the multicarrier transmission technology, which is particularly appealing. One of the crucial problems to be solved while creating multicarrier transmission systems is the PAPR problem. We discussed PAPR reduction strategies for multicarrier transmission in this paper. The proposed method is found to be effective at lowering PAPR without sacrificing transmit signal strength, BER, or increasing computational complexity. This method is based on orthonormal beam forming weights precoded using MIMO OFDM data, together with optimized solution searching using a constant modulus approach. Applications for QPSK, 16QAM, and 64QAM modulations are displayed.