A wireless energy-carrying relay transmission method based on space domain modulation

Abstract

The invention discloses a wireless power-transfer relay transmission method based on spatial modulation. For the information transmission process of a full duplexing wireless power-transfer relay system, spatial modulation is introduced into the relay end of the full duplexing wireless power-transfer relay system in a code forwarding mode; and the full duplexing wireless power-transfer relay system comprises a source node, a relay node, a spatial modulation antenna selector and a destination node. Spatial modulation is utilized in the transmission method provided by the invention; two information transmission processes are included; the capacity of the system in the second information transmission process is obtained by utilization of the approximate solution of the upper boundary solution of the spatial modulation capacity; and the relatively small capacity value in the two information transmission processes is used as the optimal system capacity of the full duplexing wireless power-transfer relay system. According to the wireless power-transfer relay transmission method based on spatial modulation disclosed by the invention, space-division multiplexing gain is obtained through a single radio-frequency link; and thus, the system capacity of the full duplexing wireless power-transfer relay system is increased.

Description

Technical field [0001] The present invention belongs to the field of wireless communication, and relates to wireless energy-carrying relay transmission technology, in particular to a wireless energy-carrying relay system under a time switching mechanism, using spatial modulation technology (Spatial Modulation, SM) in a way of coding and amplification Following the node, thereby increasing the system capacity. Background technique [0002] Currently, the operating period of energy-constrained communication systems is limited. In order to ensure the normal connection of the communication network, it is necessary to periodically replace and charge the power supply battery, but this will greatly increase the cost of the system. In order to solve this problem, people began to try to collect energy from natural resources such as wind and solar energy to supply the system. But such programs are largely controlled by uncontrollable natural factors. Since wireless signals can carry bot...

AI Technical Summary

Problems solved by technology

However, in the half-duplex scheme, either the source node or the relay node of the information transmission always does not work during the information transmission process, which leads to the incomplete utilization of time resources and the decrease of spectrum efficiency.

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