Erich Leitgeb

TL;DR: In this paper, an expression for the bit error rate of a multiple subcarrier intensity-modulated atmospheric optical communication system employing spatial diversity is derived, where spatial diversity was used to mitigate scintillation caused by atmospheric turbulence, which was assumed to obey log-normal distribution.

TL;DR: In this paper, the authors presented the preliminary results of their effort to simulate the atmospheric free space terrestrial optical channel with precise mathematical models of the most deterrent attenuators, and the channel model acquired is a first step towards developing a comprehensive model predicting the performance of a terrestrial FSO link operating under natural weather conditions.

TL;DR: The analytical framework is extended to M-ary pulse-position modulation (PPM), providing exact results for M = 2, which is shown via simulation to be tight over a wide SNR range of interest.

TL;DR: This work measured the time variation of received optical signal level during continental fog and dry snowfall over a link distance of 80 m and proposed an empirical relationship between temperature, relative humidity and optical attenuation values for the continental fog case based on standard curve fitting technique.

TL;DR: In this paper, a detailed analysis of the measurement results providing time-series analysis of these fog measurements and a comparison between maritime and continental fogs is presented. But the authors do not provide insight into designing efficient FSO systems with better perfor- mance and enhanced resilience.