TITLE:
A Novel Outage Capacity Objective Function for Optimal Performance Monitoring and Predictive Fault Detection in Hybrid Free-Space Optical and RF Wireless Networks
AUTHORS:
Barnet M. Schmidt
KEYWORDS:
Free-Space Optical Networks; Outage Capacity; Hybrid Networks; Performance Monitoring; Fault Management; MIMO; Wireless Networks; Network Management
JOURNAL NAME:
Communications and Network,
Vol.5 No.4,
November
14,
2013
ABSTRACT: This study develops an optimal performance monitoring
metric for a hybrid free space optical and radio wireless network, the Outage
Capacity Objective Function. The objective function—the dependence of hybrid
channel outage capacity upon the error rate, jointly quantifies the effects of
atmospheric optical impairments on the performance of the free space optical
segment as well as the effect of RF channel impairments on the radio frequency
segment. The objective function is developed from the basic
information-theoretic capacity of the optical and radio channels using the
gamma-gamma model for optical fading and Ricean statistics for the radio
channel fading. A simulation is performed by using the hybrid
network. The objective function is shown to provide significantly improved
sensitivity to degrading performance trends and supports of proactive
link failure prediction and mitigation when compared to current thresholding
techniques for signal quality metrics.