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Novel down link rain fade mitigation technique for Ka‐band multibeam systems
Author(s) -
Majithiya Parimal,
Sisodia A. K.,
Muralidhar V.,
Garg V. K.
Publication year - 2006
Publication title -
international journal of satellite communications and networking
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.388
H-Index - 39
eISSN - 1542-0981
pISSN - 1542-0973
DOI - 10.1002/sat.845
Subject(s) - ka band , computer science , payload (computing) , telecommunications link , fade , communications satellite , link budget , attenuation , channel (broadcasting) , amplifier , port (circuit theory) , power (physics) , waveform , ku band , link adaptation , electronic engineering , telecommunications , satellite , fading , bandwidth (computing) , computer network , network packet , wireless , radar , optics , engineering , physics , quantum mechanics , aerospace engineering , operating system
Rain fades at Ka‐Band degrades the link quality and performance significantly. Several rain fade mitigation techniques for Ka‐band satellite systems are being investigated to improve the channel capacity. Methods such as power control and adaptive waveform techniques have been proposed for use in the uplink as they are capable of straightforward implementation. A novel down link power control technique for multi‐beam Ka‐band system has been proposed in this paper. It is based on the use of multi‐port amplifier, which is commonly used for dynamic power sharing of the beams depending upon the traffic. Payload architecture for multi‐beam coverage using multi‐port amplifiers has been designed for the proposed technique. The simulation results to compensate for the rain fade attenuation of one beam by sharing the unused power from other beams have been presented Copyright © 2006 John Wiley & Sons, Ltd.