基于PTS抑制OFDM系统PAPR低复杂度算法

›› 2012, Vol. 25 ›› Issue (5): 142-.

基于PTS抑制OFDM系统PAPR低复杂度算法

邬佳佚,陈建春

(西安电子科技大学电子工程学院,陕西西安 710071)

出版日期:2012-05-15 发布日期:2012-05-24
作者简介:邬佳佚(1986—),男,硕士研究生。研究方向:第四代移动通信信号处理,OFDM系统的PAPR抑制非畸变技术。陈建春(1962—),男,硕士生导师。研究方向:自适应信号处理理论与算法,高速数字信号处理器(DSP)在实时数字信号处理中的应用。

Low Complexity Algorithm for PAPR Suppression in OFDM System Based on PTS

WU Jia-Yi, CHEN Jian-Chun

(School of Electronic Engineering,Xidian University,Xi'an 710071,China)

Online:2012-05-15 Published:2012-05-24

摘要/Abstract

摘要：

为降低基于部分传输序列法(PTS)的峰均功率比(PAPR)抑制技术的复杂度,文中研究了OFDM时域信号最大峰值点的位置与采用部分传输序列法后最大峰值点位置之间的关联性,提出了一种寻找最优相位因子序列的简化算法,该算法用抽样序列代替原始序列进行搜索。由于新算法采用的样点数目少于原始样点数目,因此可以大幅降低PTS处理过程的计算复杂度。仿真结果表明,新算法采用的数据量只有原始数据的50%,而性能仅仅损失0.2~1 dB。

关键词: OFDM, 峰均功率比, 部分传输序列法, 低复杂度

Abstract:

In order to lower the complexity of PAPR suppression techniques based on the partial transmit sequences (PTS) algorithm,research on the relevance between the positions of top highest values in OFDM time-field signal and those of top highest values through PTS algorithm is conducted.On the basis of the research,a simplified algorithm in which the sampled data replace the original data on searching for the optimized phase agent series is proposed.By the new algorithm,adopted data is much less than the original data,and the calculating complexity of PTS decreases greatly.The simulation demonstrates that the new algorithm can reduce the data amount by 50% while the performance loss ranges only from 0.2 dB to 1 dB.

Key words: OFDM;peak-to-average power ratio;Partial Transmit Sequences;low-complexity

中图分类号:

TN914.5

邬佳佚, 陈建春. 基于PTS抑制OFDM系统PAPR低复杂度算法[J]. , 2012, 25(5): 142-.

WU Jia-Yi, CHEN Jian-Chun. Low Complexity Algorithm for PAPR Suppression in OFDM System Based on PTS[J]. , 2012, 25(5): 142-.

参考文献

［1］LI X D,CIMINI L J.Effects of clipping and filtering on the performance of OFDM［J］.IEEE Communication Letters,1998 2(5):131-133.

［2］JONES A E,WILKINSON T A,BARTON S K.Block coding scheme for reduction of peak to mean envelope power ratio of multicarrier transmission scheme［J］.Electronic Letter,1994,30(22):2098-2099.

［3］SLIMANE S B.Peak-to-average power ratio reduction of OFDM signals using broadban pulse shaping［C］.Vehicular Techonology Conference.2002 Proceedings.VTC 2002-Fall,2002 IEEE 56th,2002,2:889-893.

［4］MULLER S H,HUBER J B.OFDM with reduced peak-to-average power ratio by optimum combination of partial transmit sequences［J］.Electronic Letter,1997,33(5):368-369．

［5］CIMINI L J,SOLLENBERGER N R.Peak-to-average power ratio reduction of an OFDM signal using partial transmit sequences［J］.IEEE Communications Letters,2000,4(03):86-88.

［6］HAN S H.LEE J H.PAPR reduction of OFDM signals using a reduced complexity PTS technique［J］.IEEE Signal Processing Letters,2004,11(11):887-890.

［7］KIM S S,KIM M J,GULLIVER T A.A new PTS for RAPR reduction by local search in GA［C］.Piscataway:Proceedings of 2006 International Joint Conference on Neural Networks,2006:2370-2373.

［8］LEE B M.DE FIGUEIREDO R J P.A low complexity tree algorithm for PTS-based PAPR reduction in
wireless OFDM［C］.Proceedings of 2006 IEEE International Conference on Acoustics,Speech,and Signal Processing.Piscataway:IEEE,2006:Ⅳ301-Ⅳ304.

［9］PISIT B,KAZUO M,TAWIL P.Proposal of improved pts method for ofdm signal［C］.Greece Athens:PIMRC 2007,IEEE,2007:1-5.

［10］YANG Lin,EMAD A.Novel low-complexity post-IFFT PAPR reduction technique by utilising amplitude transforming for OFDM systems［C］.Hong Kong:Wireless Communication and NETworking Conference,2007:1339-1343.

[1]	陈禹霖. 基于Matlab的CBTC系统邻频干扰研究[J]. , 2016, 29(4): 29-.
[2]	薄萍萍,宫汝江. 一种OFDM多带联合频谱感知新算法[J]. , 2015, 28(8): 130-.
[3]	李轩,张瑜,关庆阳. 卫星信道MMSE和LS均衡算法性能比较[J]. , 2015, 28(7): 84-.
[4]	廉小萍,武子安,亢慧琼. 基于蚁群算法的OFDMA系统接纳控制[J]. , 2015, 28(6): 48-.
[5]	张旭,曹金金,宋曦,任超,段世刚. 基于聚类-匈牙利方法的OFDMA子载波分配算法[J]. , 2014, 27(4): 5-.
[6]	史铭宇. 一种基于训练序列的OFDM定时同步算法[J]. , 2013, 26(7): 21-.
[7]	赵鹏,徐伟,樊雅琴. 基于OFDM-PON动态带宽分配算法研究[J]. , 2013, 26(7): 24-.
[8]	杜利刚,杨利,苏建才. 基于CAZAC序列的水声通信技术研究[J]. , 2013, 26(5): 142-.
[9]	刁新颖. 协作OFDM系统中的子载波选择算法[J]. , 2013, 26(5): 146-.
[10]	程高远, 吕明. 一种OFDM系统强窄带干扰消除方法[J]. , 2013, 26(12): 50-.
[11]	秦超杰. TD-LTE关键技术在水利防汛中的应用[J]. , 2013, 26(11): 167-.
[12]	田海锋. 利用镜像传输实现OFDM载波间干扰抵消的方法[J]. , 2012, 25(6): 107-.
[13]	段鹏. 一种OFDM系统中叠加导频的信道估计方法[J]. , 2012, 25(6): 121-.
[14]	程号, 那彦, 李黎国. 3GPP-LTE系统小区搜索算法研究[J]. , 2012, 25(4): 9-.
[15]	邵峰. MIMO OFDM同步技术研究[J]. , 2012, 25(3): 85-.