Open AccessOutage analysis of MIMO NLOS‐UV communication systems over atmospheric turbulence channels
Author(s) -
Hariq Sayed Hasan,
Karakaya Bahattin,
Odabasioglu Niyazi
Publication year - 2020
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2020.0068
Subject(s) - non line of sight propagation , mimo , fading , computer science , electronic engineering , monte carlo method , wireless , channel (broadcasting) , algorithm , physics , telecommunications , mathematics , engineering , statistics
Rich scattering of the signals in the ultraviolet (UV) band of electromagnetic spectrum enables non‐line‐of‐sight (NLOS) outdoor wireless connectivity. It eliminates the line‐of‐sight requirement of the links which are using the signals in the infra‐red band. Besides scattering losses, UV signals also suffer from atmospheric turbulence‐induced fading. The turbulent atmospheric channel causes fluctuations in the received signal intensity of a NLOS ultraviolet (NLOS‐UV) link, resulting in power loss and the performance degradation at the receiver. In this study, spatial diversity techniques are investigated as an appealing fading mitigation technique for NLOS‐UV systems over atmospheric turbulence channels. In particular, the outage probabilities of multiple‐input‐single‐output (MISO), single‐input‐multiple‐output (SIMO), and multiple‐input‐multiple‐output (MIMO) links are studied, and the outage performances are investigated for different system configurations. Closed‐form expressions are derived for the outage probability of MISO, SIMO, and MIMO systems, and the accuracy of the derivations is confirmed through Monte Carlo simulations. The outage probability of single‐input‐single‐output link is also derived as a benchmark. The results demonstrate significant performance improvements through deployment and proper configuration of MIMO systems in NLOS‐UV communication links.