Performance analysis of optical extra-WBAN links based on realistic user mobility modeling

We address the features channel characterization and performance evaluation for wireless body-area networks (WBANs) in medical applications during a walk scenario using optical transmission. More specifically, we focus on extra-WBAN uplink communication between central coordinator node (CN) placed patient’s body an access point (AP) typical hospital room. To characterize channel, use Monte Carlo ray tracing-based method take into account effects of shadowing mobility based realistic models, contrast to previous simplistic models considered literature. Using this approach, derive dynamic behavior DC gain different configurations CNs APs. Furthermore, obtained results, develop statistical model kernel density estimation, which investigate impact CN AP placement link parameters. Also, outage probability criterion, discuss further analyze improvement achieved through spatial diversity, i.e., by multiple APs room, photodetector types, under background noise conditions. The presented results show that user’s local global significantly links, can nevertheless be reduced diversity. Finally, analysis shows single equipped with avalanche photodiode allows acceptable low-to-moderate conditions, whereas PIN photodetectors should used case moderate-to-strong noise.