Abstract
High PAPR of the transmitted signal is a major drawback of OFDM communication systems. The PAPR reduces the power efficiency of the RF high power amplifier in the transmitter and caused distortion in the system. In this thesis, we propose a new PAPR reduction method, which uses a DC-balanced 8B/10B code in the time domain of OFDM system to reduce PAPR. The simulation result shows that the proposed method can reduce the peak PAPR value of a 16 subcarrier OFDM system utilizing QPSK modulation to < 7.4dB. The theoretical peak PAPR for the same system would be 12 dB. Moreover, the proposed method has very low complexity and the complexity does not increase as the number of OFDM subcarriers increases.