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Simulation study of training sequence performance of CE-OFDM system based on multipath channel

Constant envelope orthogonal frequency division Multiplexing (CE-OFDM) has become a new academics hotspot in wireless communication field with the advantage of its 0dB Peak to average power ratio(PAPR), the structure of training sequence has a direct impact on the performance of the CE-OFDM system. Based on the analysis of Chu and Chirp sequences, an improved Chu sequence structure will be proposed in this paper, meanwhile, their frequency domain characteristics will be applied to a CE-OFDM system to analyze the system performance with the multipath channel. The theoretical analysis and simulation results show that the Improved-Chu (I-Chu) sequence has a significant improvement in channel estimation performance and transmission performance compared with the other two sequences.