摘要
低峰均比序列是第五代移动通信技术中常用的一种随机序列,在多个上行信道中作为导频信号使用。根据不同的应用场景,低峰均比序列定义了不同的生成公式。文章研究了序列的定义,并结合工程实践,分析了传统查找表法应用于单位圆序列带来的精度问题和存储问题。通过研究CORDIC原理,文章提出了一种基于CORDIC的低峰均比序列生成算法,并与查表法进行了对比分析。该方法在序列数据位宽固定时,通过增加迭代次数,能够达到最大数据精度并且不占用存储空间。
The low Peak to Average Power Ratio(PAPR)sequence is a random sequence commonly used in the fifth generation mobile communication technology,which is used as a pilot signal in multiple uplink channels.According to different application scenarios,different generation formulas are defined for the low PAPR sequence.This paper studies the definition of sequence,and combines with engineering practice to analyze the accuracy and storage problems caused by the traditional look-up table method applied to unit circle sequences.By studying the principle of CORDIC,this paper proposes the low PAPR sequence generation algorithm based on CORDIC,and carries out comparative analysis with the look-up table method.This method can achieve maximum data accuracy and does not occupy storage space by increasing the number of iterations when the sequence data bit width is fixed.
作者
王汉
王力男
WANG Han;WANG Li'nan(The 54th Research Institute of CETC,Shijiazhuang 050081,China)
出处
《现代信息科技》
2025年第3期15-19,共5页
Modern Information Technology
