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Low-interference high-throughput satellite dynamic beam hopping method

A high-throughput, low-interference technology, applied in wireless communication, electrical components, radio transmission systems, etc., can solve problems such as long-term, inability to converge beam hopping results, and CCI engineering problems, and achieve high service satisfaction , The effect of shortening the operation time

Pending Publication Date: 2022-07-22
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0007] In summary, when traditional PSO algorithm and GA algorithm are used to deal with the beam hopping problem, it takes a long time or even fails to converge to the optimal beam hopping result, and the traditional convex optimization method cannot solve the problem of CCI existence. practical engineering problems

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  • Low-interference high-throughput satellite dynamic beam hopping method
  • Low-interference high-throughput satellite dynamic beam hopping method
  • Low-interference high-throughput satellite dynamic beam hopping method

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Embodiment Construction

[0036] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0037] The dynamic beam hopping method for broadband communication satellites proposed by the present invention takes N=60 ground cells in a satellite scenario as an example, and the present invention provides a method for dynamic beam hopping by using the GAP method. The beam hopping model in the broadband satellite communication system is as follows figure 1 As shown, the dynamic beam hopping process is as follows figure 2 As shown, the specific implementation is as follows:

[0038] Step 1: Determine the input parameters of the GAT method: the satellite transmit power P TOL = 20dbW, the number of satellite transmitters K = 6, the inter-satellite beam interference threshold I TH =-113dbW, the number of terrestrial cells N=60, the service satisfaction of terrestrial cells f=[f 1 ,…,f N ], the satisfaction f of any ground cell n n for random numb...

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Abstract

According to the low-interference high-throughput satellite dynamic beam hopping method provided by the invention, the problem of dynamic beam hopping in a broadband satellite communication system is rapidly solved by adopting a GAP method, and a beam hopping pattern with low interference and high service satisfaction can be obtained by fully utilizing the sparsity of the beam hopping pattern. The invention maintains interference below an interference threshold. Meanwhile, the algorithm complexity is only related to the number of satellite transmitters and is not related to the number of ground service cells, and the operation time can be greatly shortened when high-dimensional complex problems are processed. Therefore, the dynamic beam hopping method based on the GAP method is more suitable for solving the beam pattern design problem when the high-throughput satellite has inter-beam interference.

Description

technical field [0001] The invention relates to the technical field of wireless communication, and proposes a greedy adaptive pursuit GAP (greedy adaptive pursuit) method based on a greedy algorithm, which is suitable for solving dynamic beam hopping with inter-beam interference in an actual high-throughput satellite communication system question. Background technique [0002] The high-throughput beam-hopping satellite system is a brand-new high-sensitivity system with the advantages of high safety factor, fast response speed, and large communication capacity. High-throughput satellite beam-hopping technology can allocate resources in four dimensions of space, time, frequency and power, and has superior flexibility, resource utilization efficiency and the ability to adapt to the dynamic changes of terrestrial services. [0003] One of the important factors restricting the communication capacity of the high-throughput beam-hopping satellite system is co-channel interference ...

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Application Information

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IPC IPC(8): H04B7/185H04W16/28
CPCH04B7/18513H04B7/18519H04W16/28
Inventor 姚如贵李童左晓亚王立波樊晔
Owner NORTHWESTERN POLYTECHNICAL UNIV
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