Beam design method based on safety energy efficiency in satellite-ground integrated network

Abstract

The invention provides a beam design method based on safety energy efficiency in a satellite-ground integrated network, which is used for solving the low system safety energy efficiency of a downlinkof the existing satellite-ground integrated network. The method comprises the following steps: firstly, forming a high-gain directional beam by adopting analog precoding; secondly, designing digital precoding to eliminate inter-user interference; and finally, proposing a joint optimization problem of transmitting power and a power splitting coefficient, so as to maximize the safety energy efficiency of the system and meet the service quality constraint of each user at the same time, and the interference limitation of a satellite ground station and power consumption limitation of a base station. In order to solve the problem, an iterative algorithm based on Dinkelbach and continuous convex approximation SCA is provided to obtain the solution of the problem, and the convergence efficiency ofthe safe transmission rate of the system is improved. According to the method, a millimeter wave large-scale MIMO NOMA system is combined with the SWIPT technology in the ground network, and the basestation provides services for a plurality of users and protects the satellite ground station from interference.

Description

Technical field[0001]The invention relates to the technical field of safety energy efficiency of communication network transmission, in particular to a beam design method based on safety energy efficiency in a satellite-ground integrated network.Background technique[0002]The integration of satellite communication networks and terrestrial 5G networks is considered to be a promising heterogeneous network architecture. Together, the two constitute an integrated communication network with seamless global coverage, which is an important direction for future communication development. In the 5G network, the application of technologies such as millimeter wave, multiple input multiple output (MIMO) and non-orthogonal multiple access (NOMA) can significantly increase the system capacity of the 5G network And data rate. Although the satellite-to-ground integrated network has valuable spectrum resources, some millimeter-wave frequency bands have been allocated to fixed satellite services (FSS,...

AI Technical Summary

Problems solved by technology

[0007] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a beam design method based on security and energy efficiency in the satellite-ground integrated network, which solves the technical problem of low system security and energy efficiency in the downlink of the existing satellite-ground integrated network

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