摘要
针对OFDM信号功率降额问题,提出一种新的子载波预留方法。该方法利用谷值补偿算法改善OFDM信号的立方度量性能,并使用动态峰值削减算法降低OFDM信号的峰均功率比,同时对原有迭代过程进行简化,合理地控制计算开销。与传统的功率降额处理方法相比,本方法能更高效地降低系统峰均功率比,更好地控制立方度量性能。仿真和分析表明,该方法很好地解决了OFDM信号功率降额问题。
A new tone reservation method which can solve the power de-rating problem of OFDM is proposed in this paper.This new method uses valley compensation algorithm to decrease the cubic metric and dynamic peak reduction algorithm to reduce the PAPR of OFDM signal.At the same time,we improve the iterative algorithm in order to reduce the computational cost.Compared with the traditional power de-rating methods,this new method can decrease the PAPR and cubic metric effectively.Simulation results show that this proposed method can solve the Power De-rating problem perfectly.
出处
《舰船科学技术》
2011年第6期71-75,共5页
Ship Science and Technology
基金
国家自然科学基金重点资助项目(60832006)
