Multi-cell large-scale MIMO medium-high spectral efficiency power distribution method based on minimum rate guarantee

Abstract

The invention discloses a high spectral efficiency power distribution method in a multi-cell large-scale MIMO (Multiple Input Multiple Output) system based on minimum rate guarantee, and the system comprises the following steps: establishing a system model for the multi-cell large-scale MIMO system under incomplete channel state information, and obtaining an optimized target function by adopting zero-breaking detection, wherein the optimized target function can be converted into a concave function from a concave-convex process method; obtaining upper and lower limits of each user power by combining each user power limit with the minimum rate constraint, and obtaining a result by using a block coordinate descent method. Through simulation verification, the power distribution method provided by the invention can provide an effect similar to that of a particle swarm method, and is lower in complexity.

Description

Technical field:[0001]The present invention relates to a power distribution method of a spectral efficiency optimization of a mobile communication system, and more particularly to a high-standard power distribution method in a large-scale MIMO based on minimum rate-based maximum MIMO, which belongs to mobile communication.Background technique:[0002]A large number of emerging services accompanying wireless communication data traffic and diverse emerging services, 5G, and B5G communication technology have become a hotspot in communication. As one of the key technologies of 5G, the large-scale MIMO system uses an antenna that is far super-activated terminal number in the base station, which can increase the spectral efficiency of an order of magnitude and significantly reduce the transmit power. In practical applications, there must be multiple cells and there is a cell interference, so the large-scale MIMO system design of a single cell has limitations. In addition, it is important to...

AI Technical Summary

Problems solved by technology

[0004] The above literature analyzes the power allocation method for spectral efficiency optimization in multi-cell massive MIMO systems, but does not consider the user minimum rate constraint

In summary, there is a lack of related research on power allocation methods for spectral efficiency optimization of massive MIMO systems that guarantee the minimum rate, especially in the case of incomplete channel state information.

Images