Capacity-maximizing transmission method for user fairness in wireless energy-carrying two-way relay network

Abstract

The invention provides a capacity maximization transmission method oriented to user fairness in a wireless energy-carrying two-way relay network. The method comprises that the complete information transmission of a system is divided into first, second and third transmission phases, wherein the time proportions occupied by respective phases are [delta]1, [delta]2, and [delta]3 respectively; in thefirst transmission phase, a user node S sends a signal to a relay node R; in the second transmission phase, a user node D sends a signal to the relay node R; in the third transmission phase, a relay divides the each of the signals received from the two user nodes into two parts according to a ratio, one part of each signal enters an energy capture unit, and the other part of each signal enters a decoding unit; and the transmission rates of the S and D are adjusted by an optimized power division proportion and adaptation. The method can adapt to different fairness requirements, channel gain conditions and transmission time proportions to achieve fairness capacity utility maximization. Compared with the equal-proportion power division and the transmission rates of the S and D, the method cansignificantly improve the fairness capacity utility.

Description

technical field [0001] The invention relates to the field of wireless energy-carrying two-way relay network communication, in particular to a capacity-maximizing transmission method oriented to user fairness in a wireless energy-carrying two-way relay network. Background technique [0002] In practical application scenarios, it is often necessary to exchange information between nodes. As a simple and easy-to-implement information exchange technology, two-way relay has very important research value. In two-way relay transmission, the relay decodes, amplifies, and compresses the obtained source-sink node information, and then forwards the information to the source and sink nodes. Relevant research results show that the decoding two-way relay has the advantages of easy operation and low implementation complexity compared with the compressed front-haul type; at the same time, compared with the amplification type relay that consumes extra energy due to the amplification of noise,...

AI Technical Summary

Problems solved by technology

At present, the research has not solved how to divide the signal power sent by the two user nodes and adjust the transmission rate of the two users to achieve the fairness requirements of different transmission rates when the distance between the two user nodes and the relay is different, and the transmission time of different nodes is different. System capacity maximization problem

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