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Implementation method of equivalent full duplex in bidirectional relay network

A two-way relay and implementation method technology, applied in duplex signal operation, data exchange network, digital transmission system, etc., can solve the problem of low spectrum efficiency of two-way relay channel, so as to improve the utilization rate of network resources and improve spectrum efficiency Effect

Inactive Publication Date: 2011-02-16
THE PLA INFORMATION ENG UNIV
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Problems solved by technology

[0006] Although the existing method can improve the spectral efficiency of the two-way relay channel to a certain extent, it can only compensate the loss of system spectral efficiency caused by the time division multiplexing of the two-way channel. In the wireless two-way relay channel model of the node half-duplex mode However, the application of the above three methods still cannot ensure that the destination node receives information in every time slot. Therefore, the spectral efficiency of the two-way relay channel is still low, and there is still a lot of room for improvement.

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  • Implementation method of equivalent full duplex in bidirectional relay network
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  • Implementation method of equivalent full duplex in bidirectional relay network

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[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0028] In the embodiment of the present invention, multiple half-duplex nodes use physical layer network coding to process multi-channel data during the mutual cooperative relay process, and select the "optimal" path through time-division alternate transmission and channel state information. , which can realize the resource utilization rate of an equivalent full-duplex two-way relay network, and effectively improve the spectrum efficiency of the two-way relay channe...

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Abstract

The invention discloses an implementation method of equivalent full duplex in bidirectional relay network. Applying the embodiment of the invention, high efficiency relay coordination is adopted, so that only one relay node participating in coordination in each hop is in sending state while the other nodes are in receiving state from the moment that time slot number is prepared. The embodiment of the invention utilizes alternate transceiving of relay nodes, equivalent full duplex bidirectional relay network can be realized, network resource utilization factor is improved, and spectrum efficiency is improved to the utmost extent.

Description

technical field [0001] The invention relates to the technical field of cooperative communication in a broad sense, in particular to a method and device for realizing equivalent full duplex in a two-way relay network. Background technique [0002] In CoMP communication, multi-hop communication, time-division multiplexing of two-way channels, and half-duplex working mode of nodes are the three dominant factors leading to low spectrum efficiency of two-way relay channels. Existing methods for improving the spectral efficiency of two-way relay channels include: [0003] (1) The relay node processes two-way data at the same time purely in a decode-forward (DF) manner (that is, after decoding the two-way data separately, the network coding method is adopted); [0004] (2) The relay node uses denoising mapping to process bidirectional data (that is, physical layer network coding); [0005] (3) The relay node simultaneously processes bidirectional data in an amplify-and-forward (A...

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Application Information

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IPC IPC(8): H04L5/14H04L1/00H04L12/56H04L5/16
Inventor 杨波于宏毅李鸥张效义王晓梅冯强刘广怡刘洋
Owner THE PLA INFORMATION ENG UNIV
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