Robust Secure Beamforming for Multibeam Satellite Communication Systems

2019 ◽  
Vol 68 (6) ◽  
pp. 6202-6206 ◽  
Author(s):  
Zhi Lin ◽  
Min Lin ◽  
Jian Ouyang ◽  
Wei-Ping Zhu ◽  
Athanasios D. Panagopoulos ◽  
...  
Keyword(s):  
Communication Systems ◽  
Satellite Communication ◽  
Multibeam Satellite Communication

scholarly journals Optimization of Power Allocation for a Multibeam Satellite Communication System with Interbeam Interference

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Heng Wang ◽  
Aijun Liu ◽  
Xiaofei Pan ◽  
Jiong Li
Keyword(s):  
Power Allocation ◽  
Communication Systems ◽  
Satellite Communication ◽  
Utilization Efficiency ◽  
System Capacity ◽  
Total System ◽  
Allocation Algorithm ◽  
Dynamic Power ◽  
Power Resources ◽  
Multibeam Satellite Communication

In multibeam satellite communication systems it is important to improve the utilization efficiency of the power resources, due to the scarcity of satellite power resources. The interbeam interference between the beams must be considered in the power allocation; therefore, it is important to optimize the power allocated to each beam in order to improve the total system performance. Initially the power allocation problem is formulated as a nonlinear optimization, considering a compromise between the maximization of total system capacity and the fairness of the power allocation amongst the beams. A dynamic power allocation algorithm based on duality theory is then proposed to obtain a locally optimal solution for the optimization problem. Compared with traditional power allocation algorithms, this proposed dynamic power allocation algorithm improves the fairness of the power allocation amongst the beams, and, in addition, the proposed algorithm also increases the total system capacity in certain scenarios.

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