Data and energy antenna selection method for multi-user EH-MIMO communication system

Abstract

The invention discloses a data and energy antenna selection method for a multi-user EH-MIMO communication system. In a wireless EH-MIMO communication system, provided is a method of selecting data antennas and energy antennas for a base station on a downlink to realize downlink multi-user MIMO communication. The base station in the system has an EH (Energy Harvesting) capability and is equipped with multiple antennas, each user terminal is equipped with multiple antennas, and the base station simultaneously carries out MIMO communication with the user terminals on the downlink. A part of the antennas of the base station is used for transmitting data to form data antennas and the rest antennas are used for harvesting energy to form energy antennas. The invention can overcome the shortcomingof communication performance differences between the base station and users due to different channel conditions between the different users and the base station. While the channel capacity of the multi-user MIMO system is guaranteed, the communication performance of the users can be balanced and thus the better user experience can be obtained.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to an antenna selection method for multi-user MIMO communication in a wireless EH communication system. Background technique [0002] The nodes in the wireless EH communication system have the capability of energy harvesting (EH, energy harvesting), which can provide power for the system through the energy collected by the nodes themselves, which reduces the dependence on the traditional power grid and realizes the repeated use of energy. It is also suitable for mobile nodes communication between. In a wireless EH-MIMO communication system where nodes are configured with multiple antennas, nodes can use some antennas to transmit data and some antennas to collect energy at the same time, so as to realize effective cooperation between data and energy and ensure the continuous operation of the system. Therefore, at the base station, The choice of data antennas for data ...

AI Technical Summary

Problems solved by technology

However, in a multi-user MIMO system, the base station communicates with multiple users at the same time. When multiple users are randomly distributed in the location space, due to the different channel conditions between different users and the base station, the communication between the base station and the users There are differences in performance. A high system capacity does not mean that each user has better communication performance. At this time, how to effectively select data and energy antennas to balance the communication performance of each user while ensuring the channel capacity of the multi-user MIMO system In order to obtain a better user experience, it is a problem to be solved