An encoding-PTS Algorithm for PAPR reduction in OFDMA systems

The technology of reducing PAPR in OFDMA systems has great engineering value.The traditional PAPR reduction encoding algorithm for OFDMA system is only applicable to systems with small number of subcarriers,which limits its practical use.To solve this problem,by referencing to the principle of traditional Partial Transmit Sequence(PTS) algorithm,an encoding-PTS algorithm which is suitable for the OFDMA systems is proposed.With the proposed algorithm,the input data symbols are divided into several groups,each group of symbols is encoded,and the groups are combined by side information.The proposed algorithm is called encoding-PTS algorithm.We also discuss a method to find sub-optimal side information,which can reduce system complexity.Simulation results show that the PAPR performance of OFDMA system is improved with the proposed encoding-PTS algorithm.