SER Analysis of OFDM-Based Power-Line Communications Under the Impulsive Nature of Alpha-Stable Background Noise Conference Paper uri icon

abstract

  • 2015 IEEE. In an orthogonal frequency-division multiplexing (OFDM)-based power-line communication (PLC) system, the background noise is commonly assumed as Gaussian. However this model may not truly depict the effect of the human activities on noise characteristics, leading to system performance overestimation. Plenty of empirical evidences show that the impulsive nature of the PLC background noise can be well modeled by a symmetric alpha-stable (SS) process. In this paper, we investigate the analytical symbol error rate (SER) performance of M-ary modulation schemes for OFDM-based PLC systems subject to SS background noise. The strength of the SS noise is evaluated by geometric signal-to-noise ratio (GSNR) based on the zero-order statistics. We conduct extensive simulation experiments and numerical analyses, showing that under SS background noise, the fast Fourier transform (FFT) of the received complex baseband SS noise samples follow another bivariate SS distribution, and the SER performance of the OFDM system decreases as the employed FFT size grows.

name of conference

  • 2015 IEEE Global Communications Conference (GLOBECOM)

published proceedings

  • 2015 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM)

author list (cited authors)

  • Yang, F., & Zhang, X. i.

citation count

  • 4

complete list of authors

  • Yang, Fan||Zhang, Xi

publication date

  • January 2015