Data and energy antenna selection method for multi-user eh-mimo communication system

A communication system and antenna selection technology, applied in diversity/multi-antenna systems, transmission systems, radio transmission systems, etc., can solve problems such as differences in communication performance, and achieve the effect of good communication performance and guaranteed channel capacity.

Inactive Publication Date: 2020-11-20
GUANGXI NORMAL UNIV
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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

Method used

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Embodiment Construction

[0005] In a wireless EH-MIMO communication system including a base station and M user terminals, the base station has EH capability and is configured with N t Antennas, each user terminal is configured with N r The base station performs MIMO communication with M user terminals on the downlink at the same time.

[0006] The selection process of data and energy antennas at the base station according to the present invention is as follows.

[0007] Step 1: Initialize the weight coefficients of each antenna at the base station to be 0, and the positive integer j=1.

[0008] Step 2: When k=1, 2, ..., M, k is the user sequence number, and the MIMO communication from the base station to user k is regarded as point-to-point downlink MIMO communication, according to the existing single-user MIMO system The data and energy antenna selection algorithm can select the optimal data antenna set T corresponding to user k at the base station k,d and optimal energy antenna set T k,e , the o...

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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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0452H04B7/06H04B7/08
CPCH04B7/0452H04B7/0608H04B7/0822
Inventor 肖琨王秋影
Owner GUANGXI NORMAL UNIV
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