Dynamic Power Allocation for Broadband Multi-Beam Satellite Communication Networks

被引:51
作者
Destounis, Apostolos [1 ]
Panagopoulos, Athanasios D. [2 ]
机构
[1] Supelec Plateau Moulon, Alcatel Lucent Chair Flexible Radio, F-91192 Gif Sur Yvette, France
[2] Natl Tech Univ Athens, Sch Elect & Comp Engn, Mobile Radio Commun Lab, Athens 15780, Greece
关键词
Fade mitigation techniques; multi-beam antennas; satellite communications; rain attenuation; optimal resource allocation;
D O I
10.1109/LCOMM.2011.020111.102201
中图分类号
TN [电子技术、通信技术];
学科分类号
0809 ;
摘要
Broadband satellite communication networks, operating at Ka band and above, play a significant role to worldwide telecommunication infrastructure, providing backhaul and direct-to-user satellite services. Rain attenuation at these frequencies is the most dominant impairment factor that degrades the performance of the system. The dynamic reconfiguration of multi-beam satellite antennas has recently been proposed as a fading mitigation technique. In this paper, the problem of finding the power allocation among the beams of such an antenna, aiming that the number of subscribers not receiving the desired quality of service is minimized is addressed for a satellite communications system with a GEO satellite serving fixed earth terminals. An algorithm for the dynamic power allocation using a physical-mathematical model for rain attenuation prediction is proposed. Extended simulation results highlight the improvement of the dynamic scheme over the static allocation based on long term rain attenuation characteristics.
引用
收藏
页码:380 / 382
页数:3
相关论文
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