A Novel Low Complexity PAPR Reduction Scheme for TDS-OFDM Systems

Time Domain Synchronous Orthogonal Frequency Division Multiplexing Systems (TDS OFDM) achieve higher spectral efficiency than the conventional Cyclic Prefix based OFDM systems but the high Peak to Average Power Ratio remains the biggest challenge faced by these systems. Clipping scheme and Selected Length Mapping (SLM) are the most popular and low complexity deterministic methods which are utilized to reduce P APR but no improvement is observed in the Bit Error Rate of the whole system. In this work, a new hybrid scheme based on predictive algorithms is investigated and the simulation results show that the proposed method outperforms the conventional P APR reduction schemes for the TDS OFDM Systems. Also the computation complexities of the conventional schemes and proposed scheme are analyzed and compared.