Interference suppression method of cognitive satellite communication system based on resource allocation

A satellite communication system and resource allocation technology, applied in transmission systems, wireless communication, transmission monitoring and other directions, can solve problems such as channel resource waste

Active Publication Date: 2020-08-07
XI AN JIAOTONG UNIV +1
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AI Technical Summary

Problems solved by technology

If the traditional fixed spectrum allocation method is adopted, even if the user in the beam does not use the resource, other beam users cannot use the resource, which will easily cause a waste of channel resources

Method used

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  • Interference suppression method of cognitive satellite communication system based on resource allocation
  • Interference suppression method of cognitive satellite communication system based on resource allocation
  • Interference suppression method of cognitive satellite communication system based on resource allocation

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Embodiment Construction

[0060] see figure 1 with figure 2 , is a scenario based on multi-beam cognitive satellite communication system. The invention provides a cognitive satellite interference suppression method based on resource allocation, which includes a satellite, a gateway station, and L beams covered by the satellite. The available bandwidth of the system is divided into F channels, and the occupied bandwidth of each channel is recorded as B c =B tot / M, the number of user terminals served by the system is M, and channels are allocated to users in the way of seven-color multiplexing.

[0061] The physical quantity expressions required for problem modeling are:

[0062] Δ={δ m,f |1≤m≤M,1≤f≤F}

[0063] Characterize the radio link assigned to the user by the satellite communication system.

[0064] Transmitter and receiver antenna gain with G t and G r express.

[0065] When the link signal of satellite communication passes through the earth's atmosphere, the signal is attenuated due ...

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Abstract

The invention discloses an interference suppression method for a cognitive satellite communication system based on resource allocation. The interference suppression method comprises a satellite, a gateway station and K wave beams covered by the satellite, wherein the available bandwidth of the system is divided into F channels, the bandwidth occupied by each channel is recorded as Bc, the number of user terminals served by the system is M, and the channels are allocated to users in a seven-color multiplexing mode; in the communication process, the satellite transmits information to the users through the allocated channels, and problem modeling is carried out by taking the capacity performance of a cognitive satellite communication system as an optimization target; and the optimal value ofthe system capacity is taken as a global optimization value of the cognitive satellite communication system, an optimal resource allocation result is obtained by adopting a simulated annealing optimization method, and the maximum system capacity is achieved when an optimal solution is found. By adopting the simulated annealing optimization technology, the optimal resource allocation result is obtained, and the purpose of maximum system capacity is achieved on the basis of interference suppression.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to an interference suppression method of a cognitive satellite communication system based on resource allocation. Background technique [0002] With the acceleration of global informatization, it has become a demand trend for users to conduct any business communication at any place and at any time. Although the ground network communication technology is developing rapidly, but limited by the geographical environment and construction costs, the ground communication network cannot achieve full coverage to meet user needs. Compared with the ground communication network, the satellite communication network has the unique wide-area coverage capability and the ability to resist natural disasters, so that the satellite communication network has the advantages of a large application range, a wide application environment, and multiple application services, providing a feasi...

Claims

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Application Information

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IPC IPC(8): H04W24/02H04W24/06H04W84/06H04B17/382
CPCH04W24/02H04W24/06H04W84/06H04B17/382
Inventor 范建存焦思诺焦利彬罗新民张莹
Owner XI AN JIAOTONG UNIV
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