摘要
提出了1种基于改进布谷鸟算法的相位因子搜索算法,首先构造鸟巢代表相位因子,然后根据布谷鸟的产卵特性,在搜索区域范围内寻找其他鸟巢,并向邻域位置内寻找更优的产卵鸟巢,从而搜索相位因子最优值。分析和仿真实验结果表明,在相同的条件下,所提出的算法能更加准确地搜索出相位因子,从而使正交频分复用系统中的峰均功率比降低0.3~0.7dB。
Apartial transmit sequence （PTS） phase factor search algorithm based on improved cuckoo algorithm is proposed. The nests are firstly initialized to represent the PTS phase factors. Then, to thespawning characteristicsof cuckoo algorithm is applied tosearch other nests within search area and seek for better nest laying eggs. Finally, the best phase factor could be retrieved. Sim-ulation results demonstrate that the algorithm can search the phase factoraccurately in the same condition, and the peak to average power ratio （PAPR） is reduced by 0. 3-0. 7 dB for orthogonal frequency division multiplexing （OFDM） system.
出处
《中国科技论文》
北大核心
2017年第8期858-862,共5页
China Sciencepaper
基金
国家自然科学基金资助项目(61263005)
贵州省科学技术基金项目(黔科合基础[2016]1054)
贵州省本科教学工程项目(SJJG201505)
关键词
正交频分复用
峰均功率比
部分传输序列
布谷鸟算法
prthogonal frequency division multiplexing
peak to average power ratio
partial transmit sequence
cuckoo search
