期刊文献+
任意字段
题名或关键词
题名
关键词
文摘
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息

一种基于神经网络的非线性卫星HPA预失真器 被引量：4

Neural network based pre-distorter for linearization of HPA nonlinearity in satellite communications
下载PDF
导出
摘要 卫星通信中放大器使用的行波管(TWT)会引起信号的非线性畸变,对通信质量造成较大影响。为解决这种不利影响,在放大器前端采用非线性预失真,能较理想地消除放大器的非线性。由于神经网络能够对非线性函数进行较好地拟合,可以将其引入预失真器的设计。为简化神经网络中的LM算法,提出了一种采用LMS算法的系统模型,并建立新的自适应预失真器的结构模型,大大降低计算复杂度,有利于系统性能的提高。仿真表明,采用含有一个隐层(9个神经元)的神经网络模型来设计预失真器,能够达到较好的预校正效果。 The travel-wave-tube（TWT） used in the HPA in satellite communications may unexpectedly cause nonlinearity to the signals.A pre-distortion will reduce these distortions.The pre-distorter is based on a feed-forward neural network.To simplify the traditional Levenberg-Marquardt（LM） Algorithm for neural-network,a new least mean square（LMS） algorithm based model was proposed in which way the complexity of the algorithm was reduced.Simulation results confirmed that the proposed pre-distorter based on neural network consisting with one hidden layer and nine neurons produces a good performance improvement of quality of the transmission.
作者 徐勇 童新海 刘渊
机构地区 解放军理工大学通信工程学院 解放军防化学院
出处 《解放军理工大学学报（自然科学版）》 EI 北大核心 2011年第6期569-573,共5页 Journal of PLA University of Science and Technology(Natural Science Edition)
基金 江苏省自然科学基金资助项目(BK2009057)
关键词 神经网络 预失真 高增益放大器 行波管放大器 最小均方算法 neural network pre-distortion HPA（high-power amplifier） TWTA（travel-wave-tube amplifier） LMS
分类号 TN927.2 [电子电信—通信与信息系统]
  • 相关文献

参考文献10

  • 1ZAYANI R, ZID S, BOUALLEGUE R. Simulateur des non-linearites HPA surun OFDM systhme[C]. Hammamet, Tunisia: OHD Conference, 2005.
  • 2WATKINS B E, NORTH R. Pre-distortion of nonlinear amplifiers using neural networks [C]. Mclean: MILCOM' 96, 1996.
  • 3ZAYANI R, BOUALLEGUE R, ROVIRAS D. Adaptive pre-distortions based on neural networks associated with Levenberg-Marquardt algorithm for satellite down links [C]. Lausanne: EURASIP, 2008.
  • 4ZAYANI R, BOUALLEGUE R. A neural network pre-distorter for the compensation of HPA nonlinearity: application to satellite communications [J]. IJCSNS, 2007,7(3) :97-103.
  • 5ZAYANI R,BOUALLEGUE R, ROVIRAS D. An adaptive neural network pre-distorter for non-stationary HPA OFDM system [C]. Pozna Oland: EUSIPCO, 2007.
  • 6BERDONDINI M,NERI M, CIONI S, et al. Adaptive fractional pre-distortion techniques for satellite systems based on neural networks and tables[C]. Dublin: Vehicular Technology Conference, 2007.
  • 7钱业青.一种高效的用于RF功率放大器线性化的自适应预失真结构[J].通信学报,2006,27(5):35-40. 被引量：23
  • 8SALEH A. Frequency-independent and frequency-dependent nonlinear models of TWT amplifiers[J]. IEEE Trans Commun, 1981, 29(11) : 1715-1720.
  • 9LERA G,PINZOLAS M. Neighborhood based levenberg-marquardt algorithm for neural network training [J]. IEEE Transaction on Neural Networks, 2002,13 (5) :1200-1203.
  • 10GLENTIS G O, BERBERDIS K, THEODORIDIS S. Efficient least squares adaptive algorithms for FIR transversal filtering[J]. IEEE Signal Processing Magazine, 1999,16(4) :13-41.

二级参考文献13

  • 1STAPLETON S P,KANDOLA G S,CAVERS J K.Simulation and analysis of an adaptive predistorter utilizing a complex spectral convolution[J].IEEE Trans Veh Technol,1992,41(4):387-394.
  • 2LAZZARIN G,PUPOLIN S,SARTI A.Nonlinearity compensation in digital radio systems[J].IEEE Trans Commun,1994,42(2):988-999.
  • 3D'ANDREA A N,LOTTICI V,REGGIANNINI R.RF power amplifier linearization through amplitude and phase predistortion[J].IEEE Trans Commun,1996,44(11):1477-1484.
  • 4KIM J,KONSTANTINOU K.Digital predistortion of wideband signals based on power amplifier model with memory[J].Electronics Letters,2001,37(23):1417-1418.
  • 5ATA O W.Predistortion as an effective technique for linearisation of basestation amplifiers in a mobile radio cellular system[A].ICPWC'97[C].1997.147-151.
  • 6BERNARDINI A,FINA S D.Analysis of different optimization criteria for IF predistortion in digital radio links with nonlinear amplifiers[J].IEEE Trans Commun,1997,45(4):421-428.
  • 7STONICK J T,STONICK V L,MOURA J M F.Memoryless polynomial adaptive predistortion[A].ICASSP-95[C].1995.981-984.
  • 8BESBES H,LE-NGOC T.A fast adaptive predistorter for nonlinearly amplified M-QAM signals[A].IEEE Globecom'2000[C].2000.108-112.
  • 9KANG H W,CHOS Y S,YOUN D H.On compensating nonlinear distortions of an OFDM system using an efficient adaptive predistorter[J].IEEE Trans Commun,1999,47(4):522-526.
  • 10STONICK J T,STONICK V L,MOURA J M F.Multi-stage adaptive predistortion of HPA saturation effects for digital television transmission[A].IEEE ICASSP99[C].1999.2671-2674.

共引文献22

同被引文献55

引证文献4

二级引证文献9

解放军理工大学学报（自然科学版）
2011年 第6期

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部