光子学报, 2014, 43 (7): 0706017, 网络出版: 2014-08-18   

降低OFDM系统峰均比的可恢复限幅技术

A Restorable Clipping Scheme for PAPR Reduction of OFDM ROF System
作者单位
北京科技大学 计算机与通信工程学院, 北京 100083
摘要
针对正交频分复用系统中峰值平均功率比过高的问题,提出了一种基于限幅技术的改进算法.该算法对限幅后的信号进行标记,并将标记序列发送到接收端,从而使得接收端能够正确的解调出输入信号.此外,本文还将该改进算法应用于光载无线通信系统中.仿真结果表明,与传统限幅算法相比,改进算法能够明显降低系统的误码率,同时保证良好的抑制峰均比的性能.
Abstract
In order to reduce the PeaktoAverage Power Ratio (PAPR) of Orthogonal Frequency Division Multiplexing (OFDM), a restorable Clipping scheme is proposed and used in the OFDM and Radio Over Fiber (OFDMROF) system. The algorithm is to set a peak detection threshold on the input signals and the signals can be recorded in an array, at the receiving end, the original siginal can be restored in the array effectively. Simulation results show that the new scheme is not only simple, but also significantly improve the BER and the outofband radiation performance while guaranteeing the PAPR performance of the QAMOFDM system.
参考文献

[1] VAHLIN A, HOLTE N. Optimal finite duration pulses for OFDM[J]. IEEE Transaction on Communications, 1996, 44(1): 10-14.

[2] MERCHAN S, AMADA A G, GARCIA J L. OFDM performance in amplifier nonlinearity[J]. IEEE Transaction on Broadcasting, 1998, 44(1): 106-114.

[3] JIANG T, WU Y. An overwiew: Peaktoaverage power ratio reduction techniques for OFDM signals[J]. IEEE Transaction on Broadcasting, 2008, 54(2): 257-268.

[4] HUANG X, LU J. Reduction of peaktoaverage power ratio of OFDM signals with companding transform[J]. IEEE Electron Letter, 2001, 37(8): 506-507.

[5] DENG S K, LIN M C. Recursive clipping and filtering with bounded distortion for PAPR reduction[J]. IEEE Transaction on Communications, 2007, 55(1): 227-230.

[6] SATHANANTHAN K, TELLAMBURA C. Coding to reduce both PAR and PICR of OFDM signal[J]. IEEE Communications Letter Aug, 2002, 6(8): 316-318.

[7] WANG X B, TIHUNT G. Reduction of peaktoaverage power ratio of OFDM systems using a companding technique[J]. IEEE Transaction on Broadcasting, 1999, 45(3): 303-307.

[8] BAUML R W, FISCHER R F H, HUBER J B. Reducing the peak to average power ratio of multicarrier modulation by selected mapping[J]. IEEE Electron Letter, 1996, 32(22): 2056-2057.

[9] MLLER S H, HUBER J B. OFDM with reduce peaktoaverage power ratio by optimum combination of partial transmit sequences[J]. IEEE Electron Letter, 1997, 33(5): 368-369.

[10] KRONGOLD B S, JONES D L. An activeset approach for OFDM PAR reduction via tone reservation[J]. IEEE Transaction on Signal Processing, 2004, 52(2): 495-509.

[11] ARMSTRONG J. New OFDM Peaktoaverage power reduction scheme[C]. IEEE Vehicular Technology Conference, 2001, 1: 756-760.

[12] ARMSTRONG J. Peaktoaverage power reduction for OFDM by repeated clipping and frequency domain filtering[J]. IEEE Electron Letter, 2002, 38(5): 246-247.

[13] WANG L Q, CHINTHA T A. Simplified clipping and filtering technique for PAR reduction in OFDM systems[J]. IEEE Signal Processing. Letter, 2005, 12(6): 453-456.

[14] KIM Youngjin, KWON Uikun, SEOL Daeyoung. An effective PAPR reduction of SFBCOFDM for multimode cooperative transmission[J]. IEEE Signal Processing Letter, 2009, 16(11): 925-928.

[15] WANG Yajun, CHE Wei, TELLAMBURA C. Genetic algorithm based nearly optimal peak reduction tone set selection for adaptive amplitude clipping PAPR reduction[J]. IEEE Transaction on Broadcasting, 2012, 58(3): 462-471.

[16] WANG Y, LUO Z. Optimized iterative clipping and filtering for PAPR reduction of OFDM signals[J]. IEEE Transaction on Communications, 2011, 59(1): 33-37.

[17] HUANG Xiao, LU Jianhua, ZHENG Junli, et al. Companding transform for reduction in peaktoaverage power ratio of OFDM signals[J]. IEEE Transaction on Wireless Communications, 2004, 3(6): 2030-2039.

[18] TELADO J. Multicarrier modulation with low PAR: applications to DSL and wireless[M]. Kluver Academic Published, 2000.

[19] SKRZYPCZAK A, SIOHAN P, JAVAUDIN J P. Reduction of the peaktoaverage power ratio for OFDMOQAM modulation[C]. 63rd IEEE Vehicular Technology Conference, 2006, 4: 2018-2022.

[20] YE C, LI Z, JIANG T, NI C, et al. PAPR reduction of OQAMOFDM signals using segmental PTS scheme with low complexity[J]. IEEE Transactions on Broadcasting, 2013, 60(1): 141-147.

何振, 王建萍, 颜晶. 降低OFDM系统峰均比的可恢复限幅技术[J]. 光子学报, 2014, 43(7): 0706017. HE Zhen, WANG Jianping, YAN Jing. A Restorable Clipping Scheme for PAPR Reduction of OFDM ROF System[J]. ACTA PHOTONICA SINICA, 2014, 43(7): 0706017.

本文已被 2 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!