Energy efficiency optimization method suitable for large-scale multiple-input-multiple-output system

An optimization method and multi-input technology, applied in transmission systems, radio transmission systems, diversity/multi-antenna systems, etc., can solve problems such as increasing carbon dioxide emissions, aggravating the greenhouse effect, increasing operating costs, etc., to reduce complexity, Reduce algorithm complexity and ensure the effect of system energy efficiency
CN105933971AActive Publication Date: 2016-09-07CHONGQING UNIV OF POSTS & TELECOMM
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
CHONGQING UNIV OF POSTS & TELECOMM
Publication Date
2016-09-07

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Abstract

The invention discloses an energy efficiency optimization method suitable for a large-scale multiple-input-multiple-output system. The method comprises the steps: firstly creating an energy efficiency optimization model of a joint optimization base station antenna number, an antenna subset and transmission power; secondly proposing a low-complexity iterative search method, supposing that the base station antenna number is M, and carrying out the traversal of the base station antenna number from one to M; thirdly selecting one antenna number and then employing a suboptimal antenna selection algorithm based on a channel matrix norm for the selection of an antenna subset, wherein the energy efficiency is a quasi-concave function of transmission power after the antenna number and the antenna subset are determined, so the optimal transmission power can be solved through employing a convex optimization theory, and at this moment the energy efficiency corresponding to the optimal transmission power is the optimal energy efficiency under the current antenna number; finally comparing the energy efficiencies of M times, and obtaining the optimal energy efficiency of the system, the optimal antenna number, the antenna subset, and the transmission power. The method can reduce the cost of the system while improving the energy efficiency.
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Description

technical field

[0001] The invention belongs to the technical field of wireless communication, and specifically designs an energy efficiency optimization method suitable for a massive MIMO system, and in particular relates to an energy efficiency optimization method for a single-cell multi-user massive MIMO system. Background technique

[0002] Due to the gradual increase in the number of mobile communication users and the rapid development of broadband multimedia services, people have higher and higher requirements for the transmission rate and performance of communication systems. The development of the fourth generation communication system. In order to meet people's increasingly progressive needs, research on technologies related to fifth-generation mobile communications has been launched. At the same time, a high transmission rate means more energy consumption. Relevant research shows that the energy consumption of the base station is the main part of the energy consum...

Claims

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