首页    期刊浏览 2024年12月02日 星期一
登录注册

文章基本信息

  • 标题:Modeling Nonlinear Power Amplifiers in OFDM Systems from Subsampled Data: A Comparative Study Using Real Measurements
  • 本地全文:下载
  • 作者:Ignacio Santamaría ; Jesús Ibáñez ; Marcelino Lázaro
  • 期刊名称:EURASIP Journal on Advances in Signal Processing
  • 印刷版ISSN:1687-6172
  • 电子版ISSN:1687-6180
  • 出版年度:2003
  • 卷号:2003
  • 期号:12
  • 页码:1219-1228
  • DOI:10.1155/S1110865703306067
  • 出版社:Hindawi Publishing Corporation
  • 摘要:

    A comparative study among several nonlinear high-power amplifier (HPA) models using real measurements is carried out. The analysis is focused on specific models for wideband OFDM signals, which are known to be very sensitive to nonlinear distortion. Moreover, unlike conventional techniques, which typically use a single-tone test signal and power measurements, in this study the models are fitted using subsampled time-domain data. The in-band and out-of-band (spectral regrowth) performances of the following models are evaluated and compared: Saleh's model, envelope polynomial model (EPM), Volterra model, the multilayer perceptron (MLP) model, and the smoothed piecewise-linear (SPWL) model. The study shows that the SPWL model provides the best in-band characterization of the HPA. On the other hand, the Volterra model provides a good trade-off between model complexity (number of parameters) and performance.

国家哲学社会科学文献中心版权所有