Outage Probability Performance in Mobile Indoor Optical Wireless Communication Environment

3pagesInternational audienceIn this paper, we study an Optical Wireless Communication system for indoor healthcare monitoring application, taking into account the impact of indoor environment. We consider a diffuse link between an emitter placed on a mobile monitored patient and a base station located on the ceiling considering a one-bounce model. Thanks to Ray Propagation Simulator (RaPSor) developed at the Xlim-SIC laboratory, wall, floor and ceiling reflections are taken into account so that the system is more accurately designed, even for low data rates. This is of main concern for healthcare application because it is important to evaluate the required emitter power, related to the power autonomy of monitoring system

Mobile Healthcare Monitoring in Hospital Based on Diffuse Optical Wireless Technology

International audienceIn this paper indoor wireless Infrared (IR) technology for healthcare monitoring is studied. Monitoring provides a continuous and reliable vital sign measurement to secure patient staying in the hospital. Considering that patient moving is inevitable, we focus on a mobile IR channel based on diffuse propagation. A model of mobile channel is developed through the study of statistical distributions of channel gain state for OOK modulation. We consider two mobility schemes for the transmitter which is coupled to the monitoring system: one in 2 dimensions (2D) for (x,y) mobility and another in 3D for (x,y,z) mobility. From statistical analysis, the outage probability is calculated in order to evaluate the performance for different data rates and for different average transmitted power before concluding on the reliability of diffuse mobile monitoring

Indoor Optical Wireless System dedicated to Healthcare application in Hospital

International audienceIn this paper indoor wireless Infrared (IR) technology for patient monitoring is studied. Monitoring provides a continuous and reliable vital sign measurement to secure patient staying in the hospital. As patient moving is inevitable, we focus on a mobile IR channel. We study the Line of Sight propagation with an OOK modulation system. A model of mobile channel is developed through the study of statistical distributions of the indoor distance between transmitter and receiver. We consider two mobility schemes, one in 2 dimensions (2D) for a fixed transmitter height and another in 3D. From the statistical analysis, the outage probability is calculated in order to evaluate the performance for different data rates and for high quality of service before concluding on the reliability of mobile monitoring

Performances d'un système de transmission optique sans fil pour la télésurveillance médicale en milieu sensible confiné

National audienc

Indoor optical wireless system dedicated to healthcare application in a hospital,

International audienceIn this study, the authors deal with a wireless healthcare monitoring solution based on a secure technology in hospital context. Actually, radio frequency (RF) networks can present electromagnetic disturbances in hospital environments. The authors thus investigate an alternative solution based on infrared (IR) technology. As patient mobility is inevitable, they focus on mobile IR communications considering line-of-sight (LOS) propagation between the transmitter coupled with medical sensors and the receiver. The authors study different mobility scenarios, one in two dimensions (2D) for a fixed transmitter height and another in three dimensions (3D) by considering transmitter height variations. In each case, they analyse the distributions of channel gain state to find the statistical model of the mobile IR channel for a given distribution of the patient locations within the room (uniform or gaussian). By calculating the outage probability from statistical analysis, they investigate the impact of the mobility on data rates and quality of service needed for this application in the case of an on-off keying (OOK) modulation before concluding on the reliability of the studied mobile healthcare monitoring system

LT codes performance over indoor mobile wireless optical channel

Print ISBN: 978-1-4577-1472-6International audienc

Transmission Power Analysis of Optical Wireless Based Mobile Healthcare Systems

Springer Science+Business Media,International audienceIn the context of healthcare monitoring, it is necessary to transmit vital information from the patient to an interface managed by the hospital staff. In this work we consider a system where the patient can move within a hospital room and the data collected by sensors are transmitted to a distant receiver placed on the ceiling. We investigate the potentiality of using infrared (IR) communication for the transmission of information in this mobile context. Considering two main IR propagation types (line of sight and diffuse), we characterize the IR mobile channel by using a random waypoint mobility for a realistic scenario. Thanks to the mobility model, we evaluate the outage probability of this mobile monitoring scheme. From the results, the power efficiency of IR technology to ensure the communication between sensors and the collecting point is established. Moreover, to minimize the system performance and ensure the highest power autonomy, we investigate the possibility of using channel coding. The analysis shows that for a typical data rate of 500 Kbps, it is theoretically possible to minimize the transmission power considering the use of a forward error correction code while maintaining the targeted information rate

Performance and transmission power bound analysis for optical wireless based mobile healthcare applications

International audienc

Maximal rate of mobile wireless optical link in indoor environment

International audienc

InfraredCommunication Technology Applied to Indoor Mobile Healthcare Monitoring System

International audienc