中图分类号：TN929.5
文献标识码：A
DOI：10.16157/j.issn.0258-7998.200057
中文引用格式：竟诗琦，陈朝，苏宇航. 基于全程耦合映像格子的OFDM系统性能改进算法[J].电子技术应用，2020，46(7)：99-103.
英文引用格式：Jing Shiqi，Chen Zhao，Su Yuhang. Performance improvement algorithm of OFDM system based on GCML[J]. Application of Electronic Technique，2020，46(7)：99-103.

Performance improvement algorithm of OFDM system based on GCML

Abstract：Orthogonal Frequency Division Multiplexing(OFDM), as a technology that will still play an important role in 5G, will be restricted to its further development due to its high PAPR. SLM algorithm is an important means to reduce PAPR, but it still has some shortcomings such as out-of-band interference and high peak value can′t be completely filtered out. In view of the above problems, a SLM-RCF combined algorithm based on GCML is proposed in this paper, the algorithm makes full use of the good correlation，orthogonality and aperiodicity of GCML to improve SLM algorithm to improve its anti-interference ability, and combines with the RCF algorithm to further filter out high peak value. Theoretical analysis and simulation results show that the combined algorithm can reduce the influence of out-of-band interference and further reduce the PAPR, at the same time, it can reduce the system bit error rate, and improve the reliability of system.

Key words :orthogonal frequency division multiplexing；peak to average power ratio；selective mapping；globally couple map lattices