Rain Spatial Classification for Availability Studies of Point-to-Multipoint Systems

Signal propagation at frequencies above 10 GHz suffers from significant attenuation due to precipitation. This has to be taken into account when planning point-to-multipoint (PMP) wireless systems operating in the millimeter wave band. Given the nonuniform spatial distribution of the rain rate, the site diversity concept emerges as one of the mitigation techniques. For propagation studies of PMP systems during rain events, rain spatial properties and their corresponding impact on system behavior has to be investigated. An extensive database of rainfall radar data for various types of rain events has been established. System outage improvement was studied using space-time simulations of PMP systems under specific rain conditions. A new approach to rain spatial classification according to its impact on system performance is proposed, using a single rainfall spatial parameter. Examples of its calculation are presented

[1]  J. Marshall,et al.  THE DISTRIBUTION OF RAINDROPS WITH SIZE , 1948 .

[2]  M. S. Assis,et al.  A simple method for estimating rain attenuation distribution , 1977 .

[3]  Aldo Paraboni,et al.  A comprehensive meteorologically oriented methodology for the prediction of wave propagation parameters in telecommunication applications beyond 10 GHz , 1987 .

[4]  P. A. Watson,et al.  Attenuation and countermeasures in millimeter‐wave point‐to‐multipoint networks , 1993 .

[5]  R. Crane.  Electromagnetic Wave Propagation Through Rain , 1996 .

[6]  J. Kr.  New data processing in the Czech weather radar network , 2002 .

[7]  Laurent Castanet,et al.  HYCELL—A new hybrid model of the rain horizontal distribution for propagation studies: 1. Modeling of the rain cell , 2003 .

[8]  Harry R. Anderson,et al.  Fixed Broadband Wireless System Design: Anderson/Fixed , 2003 .

[9]  Z. Sokol,et al.  The Use of Radar and Gauge Measurements to Estimate Areal Precipitation for Several Czech River Basins , 2003 .

[10]  R. Crane.  A local model for the prediction of rain-rate statistics for rain-attenuation models , 2003 .

[11]  O. Fiser.  Site Diversity Gain Estimated from Rain Rate Records , 2003 .

[12]  Harry R. Anderson,et al.  Fixed Broadband Wireless System Design , 2003 .

[13]  Ronnie Landqvist,et al.  Simulation of Wireless Digital Communication Systems , 2004 .

[14]  M. Grábner,et al.  Rain Intensity Statistical Processing and Comparison with ITU-R Recommendations , 2004 .

[15]  P. Pechac,et al.  Site diversity time-space simulations for LMDS [route diversity] , 2004, IEEE 60th Vehicular Technology Conference, 2004. VTC2004-Fall. 2004.

[16]  P. Pechac,et al.  Simulations of site diversity based outage improvements for point-to-multipoint systems in millimeter-wave band , 2005, Symposium, 2005 Wireless Telecommunications.