Optimal bandwidth allocation for multi-spot-beam satellite communication systems

2013 ◽  
Author(s):  
Heng Wang ◽  
Aijun Liu ◽  
Xiaofei Pan ◽  
Luliang Jia
Keyword(s):  
Bandwidth Allocation ◽  
Communication Systems ◽  
Satellite Communication ◽  
Optimal Bandwidth ◽  
Optimal Bandwidth Allocation ◽  
Spot Beam

scholarly journals Optimization of Joint Power and Bandwidth Allocation in Multi-Spot-Beam Satellite Communication Systems

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Heng Wang ◽  
Aijun Liu ◽  
Xiaofei Pan
Keyword(s):  
Bandwidth Allocation ◽  
Communication Systems ◽  
Optimization Problem ◽  
Satellite Communication ◽  
Optimal Allocation ◽  
Optimal Solution ◽  
System Capacity ◽  
Total System ◽  
Joint Power ◽  
Spot Beam

Multi-spot-beam technique has been widely applied in modern satellite communication systems. However, the satellite power and bandwidth resources in a multi-spot-beam satellite communication system are scarce and expensive; it is urgent to utilize the resources efficiently. To this end, dynamically allocating the power and bandwidth is an available way. This paper initially formulates the problem of resource joint allocation as a convex optimization problem, taking into account a compromise between the maximum total system capacity and the fairness among the spot beams. A joint bandwidth and power allocation iterative algorithm based on duality theory is then proposed to obtain the optimal solution of this optimization problem. Compared with the existing separate bandwidth or power optimal allocation algorithms, it is shown that the joint allocation algorithm improves both the total system capacity and the fairness among spot beams. Moreover, it is easy to be implemented in practice, as the computational complexity of the proposed algorithm is linear with the number of spot beams.

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