Resource optimization method for large-scale antenna wireless energy-carrying communication system under Ricean channel

Abstract

The invention discloses a resource optimization method for a large-scale antenna wireless energy-carrying communication system under the Rice channel, estimates the Rice channel under the Massive MIMO system, and obtains the statistical characteristics of the Rice channel; calculates the uplink and downlink according to the statistical characteristics The achievable rate of the road and the energy collected by the user; the optimization problem is constructed through the achievable rate of the uplink and downlink and the energy collected by the user; the optimization problem is aimed at minimizing the downlink transmit power; the optimization problem is solved , and determine the optimal transmission power for each user according to the obtained optimal solution; the present invention considers that the energy transmission efficiency of SWIPT in the actual scene is greatly affected by the communication distance, and the line-of-sight transmission plays a very important role, through An optimization problem with the objective function of minimizing the downlink transmission power is established, and the two optimization variables of the power split ratio and the downlink transmission power are optimized intensively to reduce energy consumption while ensuring normal transmission of the uplink and downlink.

Description

【Technical field】 [0001] The invention belongs to the technical field of mobile communication, and in particular relates to a resource optimization method for a large-scale antenna wireless energy-carrying communication system under a Rice channel. 【Background technique】 [0002] With the rapid development of science and technology, mobile data is also increasing exponentially, and people's demand for mobile communication services is also increasing. 5G is a new generation of mobile communication systems developed for future mobile communication needs. It has ultra-high frequency spectrum and Energy efficiency is an order of magnitude or even higher than that of 4G mobile communication systems in terms of transmission rate and resource utilization, but it also significantly increases carbon emissions and total energy consumption. Therefore, while using 5G technology, it can also Realizing green communication is the key to solving the problem. [0003] At present, 5G researc...

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Problems solved by technology

[0003] At present, 5G research on maximizing system throughput has matured. It can meet the business needs of a large number of users, but it ignores the adverse impact on the environment, and most of the research focuses on a single link direction, which cannot fully describe the system. Features; most of the research on SWIPT is carried out under the Rayleigh channel. Although the processing method is simple, it ignores the influence of distance on the technology and reduces the practicality.

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