基于RNS的PAPR抑制方法的性能分析与比较

Performance Analysis and Comparison of RNS-Based PAPR Reduction Method

  • 摘要: 峰值平均功率比(PAPR)问题是多载波技术发展应用的瓶颈。为减少PAPR,提出了基于余数系统(RNS)的PAPR抑制方法,其核心是利用RNS的并行特性将原信号转化为较小的余数来表征,并利用RNS模运算的性质使每个余数支路的输出信号小于相应的余数基。该方法减小了传输信号的动态范围,无损地抑制了PAPR。对该方法的性能进行了理论分析,并与常用的无损抑制方法SLM(选择性映射)和PTS(部分传输序列)进行比较。理论分析和仿真结果显示,该方法能够无失真地抑制PAPR,与SLM和PTS方法相比有较低的复杂度,且不需要传输边带信息。

     

    Abstract: The high peak-to-average power ratio (PAPR) is the bottleneck of the development of multicarrier transmission technology. The residue number system (RNS)-based PAPR reduction method is proposed to improve PAPR performance. The main idea of the proposed method is to use the parallel and modular operation properties of RNS to limit the dynamic range of transmitted signals for PAPR reduction. In this paper, the performance of the proposed method is analyzed. In addition, the common lossless methods, selective mapping (SLM) and partial transmit sequences (PTS), are compared with the proposed method. Theoretical analysis and simulation results demonstrate the proposed method has the capability to achieve desirable PAPR reduction and low complexity without distortion and side information, compared with PTS and SLM.

     

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