计算机与数字工程2025，Vol.53Issue(4)：921-925,967,6.DOI:10.3969/j.issn.1672-9722.2025.04.001
基于符号级预编码的峰均比抑制技术及算法研究
Research on Peak-to-average Ratio Suppression Technology and Algorithms Based on Symbol-level Precoding
摘要
Abstract
In response to the problem of high Peak-to-Average Power Ratio(PAPR)in multi input multiple output-orthogo-nal frequency division multiplexing(MIMO-OFDM)systems,symbol level precoding(SLP)is utilized to convert harmful multi-us-er interference(MUI)into the required signal gain,a peak-to-average ratio suppression scheme based on SLP is proposed.Firstly,this paper establishes the signal model of MIMO-OFDM system and SLP,and establishes the joint design optimization problem of SLP and low PAPR under the constraints of transmission power and symbol-level precoding scheme.Due to its non convex nature and large number of constraints,it is difficult to efficiently solve the problem.A dual iteration optimization algorithm based on the di-chotomy fast iterative truncation algorithm(FITRA)is proposed,which suppresses PAPR through the inner layer FITRA algorithm and maximizes the signal to interference-plus-noise ratio(SINR)of the received signal through the outer layer dichotomy to achieve good communication performance.Finally,the effectiveness and related performance indicators of the proposed algorithm are ana-lyzed and evaluated through simulation.关键词
MIMO-OFDM/PAPR/SLP/二分法-FITRA双迭代优化算法Key words
MIMO-OFDM/PAPR/SLP/dichotomy-FITRA double iterative optimization algorithm分类
电子信息工程引用本文复制引用
林远忠,蔡曙..基于符号级预编码的峰均比抑制技术及算法研究[J].计算机与数字工程,2025,53(4):921-925,967,6.基金项目
国家自然科学基金项目"基于符号级波束赋形的收发机设计与智能优化"(编号:62071249)资助. （编号:62071249）
