Title :
Analytical Time-Domain Model for Radio over Free Space Optical (RoFSO) Systems Considering the Scintillation Effect
Author :
Lim, Wansu ; Cho, Tae-Sik ; Yun, Changho ; Kourtessis, Pandelis ; Kim, Kiseon ; Yang, Yeon-mo
Author_Institution :
Sch. of Eng. & Technol., Univ. of Hertfordshire, Hatfield, UK
fDate :
4/1/2012 12:00:00 AM
Abstract :
An analytical time-domain model is presented to analyze a radio over free space optical (RoFSO) system considering the scintillation effect with a log-normal distribution. This analytical model uses a dual-drive Mach-Zehnder modulator (DD-MZM) and photodetector (PD) for typical optical double sideband (ODSB) and single sideband (OSSB) signals. We show the output current of PD as a function of the summation of each frequency component in time domain. Finally, we calculate the received signal power with respect to the power spectral density (PSD) and derive a closed-form average bit error rate (BER) performance.
Keywords :
error statistics; log normal distribution; modulators; photodetectors; radio-over-fibre; scintillation; BER performance; DD-MZM; ODSB; OSSB; RoFSO systems; analytical time-domain model; closed-form average bit error rate; dual-drive Mach-Zehnder modulator; log-normal distribution; optical double sideband; photodetector; power spectral density; radio over free space optical; scintillation effect; single sideband signals; Amplitude modulation; Bit error rate; Optical fiber communication; Optical modulation; Radio frequency; Time domain analysis;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
DOI :
10.1109/TAES.2012.6178095
