Title :
Error performance of uncoded and convolutional coded SC receiver over FSO channel with pointing errors
Author :
Petkovic, Milica I. ; Zdravkovic, Nemanja M. ; Dordevic, Goran T.
Author_Institution :
Fac. of Electron. Eng., Univ. of Nis, Nis, Serbia
Abstract :
In this paper, the performance of intensity-modulated with direct detection (IM/DD) free space optical (FSO) system using the on-off keying is observed. Besides the gamma-gamma atmospheric turbulence degradation, the pointing errors and path loss are included. In order to mitigate degradation effects, the selection combining (SC) receiver is applied. After theoretical derivation of the bit error rate expression, the numerical integration is accomplished and confirmed by Monte Carlo simulations. Also, the BER performance is improved by using the convolutional coding, which is demonstrated by Monte Carlo simulations. Numerical results are presented and effects of normalized jitter, normalized beam width, propagation distance and number of SC apertures are observed.
Keywords :
Monte Carlo methods; error statistics; jitter; optical links; optical receivers; BER performance; FSO channel; Monte Carlo simulations; convolutional coded SC receiver; error performance; free space optical system; intensity-modulated with direct detection; normalized beam width; normalized jitter; on-off keying; pointing errors; propagation distance; selection combining receiver; uncoded receiver; Adaptive optics; Apertures; Atmospheric modeling; Bit error rate; Diversity reception; Optical receivers; Atmospheric turbulence; Free space optical; bit error rate; convolutional codes; pointing errors; selection combining;
Conference_Titel :
Telecommunications Forum (TELFOR), 2013 21st
Conference_Location :
Belgrade
Print_ISBN :
978-1-4799-1419-7
DOI :
10.1109/TELFOR.2013.6716226
