title: Free space optical ultra-wideband communications over atmospheric turbulence channels.
abstract: A hybrid impulse radio ultra-wideband (IR-UWB) communication system in which UWB pulses are transmitted over long distances through free space optical (FSO) links is proposed. FSO channels are characterized by random fluctuations in the received light intensity mainly due to the atmospheric turbulence. For this reason, theoretical detection error probability analysis is presented for the proposed system for a time-hopping pulse-position modulated (TH-PPM) UWB signal model under weak, moderate and strong turbulence conditions. For the optical system output distributed over radio frequency UWB channels, composite error analysis is also presented. The theoretical derivations are verified via simulation results, which indicate a computationally and spectrally efficient UWB-over-FSO system.
authors: Wireless Communication Laboratory, Department of Electrical and Electronics Engineering, Boğaziçi University, Bebek 34342 Istanbul, Turkey.
authors: Kemal
authors: K
authors: Davaslioğlu
authors: Erman
authors: E
authors: Cağiral
authors: Mutlu
authors: M
authors: Koca
mesh_terms: D001272:Atmosphere; D003198:Computer Simulation; D004867:Equipment Design; D005336:Fiber Optic Technology / Q000295:instrumentation*; D011846:Radio Waves; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013685:Telecommunications / Q000295:instrumentation*