DocumentCode :
3429004
Title :
QoS In Weather Impacted Satellite Networks
Author :
Harb, Kamal ; Srinivasan, Anand ; Huang, Changcheng ; Cheng, Brian
Author_Institution :
EION Wireless, Ottawa
fYear :
2007
fDate :
22-24 Aug. 2007
Firstpage :
178
Lastpage :
181
Abstract :
Rain and snow can have a distorting effect on Ku and Ka bands signal fidelity resulting in excessive digital transmission errors. This loss of signal attenuation is commonly referred to as rain fade. Rain fade impacts the Quality of Service (QoS) in wireless and satellite networks. Accurately predicting rain fade can enable mitigation planning by adaptively selecting appropriate power level, coding and modulation. This paper computes rainfall rate and Rain Attenuation (RA) at any location on earth using ITU-R models combined with bi-linear interpolation and frequency extrapolation. In addition since RA is considered a dominant impairment for wireless signal [1]-[6], we are introducing a novel method for accurately determining RA as function of frequency based on proceeding results from a predicted weather database. Finally, a three dimensional relationship is proposed among RAs with both frequency and rainfall rate, which is a function of probability. These results are key factors in adjusting and improving satellite signal power, modulation and coding schemes, and frame size, monitored and controlled altogether by a powerful and efficient intelligent system in order to improve QoS.
Keywords :
quality of service; satellite communication; QoS; bilinear interpolation; frequency extrapolation; quality of service; rain attenuation; satellite networks; service level agreements; signal attenuation; wireless networks; Attenuation; Distortion; Earth; Frequency; Interpolation; Modulation coding; Quality of service; Rain fading; Satellites; Snow; International Telecommunications Union - Radiocommunications (ITU-R); Quality of Service (QoS); Rain Attenuation (RA); Service Level Agreements (SLA);
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications, Computers and Signal Processing, 2007. PacRim 2007. IEEE Pacific Rim Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
978-1-4244-1189-4
Electronic_ISBN :
1-4244-1190-4
Type :
conf
DOI :
10.1109/PACRIM.2007.4313206
Filename :
4313206
Link To Document :
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