[1]周东旭,郭建新,郑航,等.NC-OFDM中基于改进粒子群算法的部分传输序列峰均比抑制技术[J].应用科技,2016,43(01):9-12.[doi:10.11991/yykj.201506013]
 ZHOU Dongxu,GUO Jianxin,ZHENG Hang,et al.Partial transmit sequences peak to average power ratio reduction technology based on improved PSO in the NC-OFDM[J].Applied science and technology,2016,43(01):9-12.[doi:10.11991/yykj.201506013]
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NC-OFDM中基于改进粒子群算法的部分传输序列峰均比抑制技术(/HTML)
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《应用科技》[ISSN:1009-671X/CN:23-1191/U]

卷:
第43卷
期数:
2016年01期
页码:
9-12
栏目:
现代电子技术
出版日期:
2016-02-05

文章信息/Info

Title:
Partial transmit sequences peak to average power ratio reduction technology based on improved PSO in the NC-OFDM
作者:
周东旭 郭建新 郑航 孟庆徽
空军工程大学 信息与导航学院, 陕西 西安 710077
Author(s):
ZHOU Dongxu GUO Jianxin ZHENG Hang MENG Qinghui
Information and Navigation College, Air Force Engineering University, Xi’an 710077, China
关键词:
非连续正交频分复用部分传输序列峰均比粒子群算法
Keywords:
non-contiguous orthogonal frequency division multiplexingpartial transmit sequencespeak to average power ratioparticle swarm optimization
分类号:
TN92
DOI:
10.11991/yykj.201506013
文献标志码:
A
摘要:
部分传输序列算法(PTS)是抑制非连续正交频分复用(NC-OFDM)系统中峰值功率平均比(峰均比,PAPR)的有效算法之一,但该算法存在着搜索最优相位集合时计算复杂度高的问题。针对该问题,提出了一种改进的离散粒子群优化PTS的峰均比抑制算法。改进算法将整个粒子群体划分为多个子群,增加了粒子的多样性,使得相位因子朝着最优解快速收敛,避免了因陷入局部最优解而导致早熟的现象,可获取更优的相位因子。仿真结果表明,在降低传统PTS算法复杂度的同时,改进算法可获得优于传统粒子群优化PTS算法0.3~0.4 dB的PAPR性能改善,从而证明了该算法的有效性。
Abstract:
Partial transmit sequences(PTS) algorithm is an effective technique to reduce the high peak to average power radio(PAPR) in the non-contiguous orthogonal frequency division multiplexing(NC-OFDM).However,the algorithm complexity of PTS is extremely high while searching the best phase vectors.To solve this problem,an improved PTS based on discrete particle swarm optimization is proposed.The improved algorithm increases the diversity of particle swarm by dividing the population into several parts.In this way,the phase vectors would constrict to the best result and then avoid the local optimum.The simulation results show that the proposed algorithm reduces 0.3~0.4 dB in PAPR,and obtains more advantagesthan traditional algorithm.

参考文献/References:

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相似文献/References:

[1]王志勇,庞伟正.一种降低OFDM系统峰均比的PTS-TR联合算法[J].应用科技,2009,36(04):15.
 WANG Zhi-yong,PANG Wei-zheng.A PTS -TR united algorithm for reducing peakto average power ratio of OFDM system[J].Applied science and technology,2009,36(01):15.
[2]李万臣,田毅辉.基于PTS算法降低OFDM峰均功率比的研究[J].应用科技,2009,36(09):48.[doi:10.3969/j.issn.1009-671X.2009.09.011]
 LI Wan-chen,TIAN Yi-hui.Research on the improved PTS algorithm for PAPR reduction in OFDM[J].Applied science and technology,2009,36(01):48.[doi:10.3969/j.issn.1009-671X.2009.09.011]

备注/Memo

备注/Memo:
收稿日期:2015-06-08;改回日期:。
基金项目:国家自然科学基金资助项目(61401499).
作者简介:周东旭(1989-),男,硕士研究生;郭建新(1974-),男,教授.
通讯作者:周东旭,E-mail:zdx52090805@163.com.
更新日期/Last Update: 2016-02-17