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Full-duplex and half-duplex mixed relay implementing method based on diversity gain

An implementation method and technology of diversity gain, which can be applied in the directions of duplex signal operation, transmission system, electrical components, etc., and can solve the problem of lack of antenna diversity gain.

Inactive Publication Date: 2017-01-25
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

These two working modes cause the loss of a part of the antenna diversity gain

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  • Full-duplex and half-duplex mixed relay implementing method based on diversity gain
  • Full-duplex and half-duplex mixed relay implementing method based on diversity gain
  • Full-duplex and half-duplex mixed relay implementing method based on diversity gain

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Embodiment Construction

[0045] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0046] In the existing hybrid duplex relay mechanism based on full-duplex and half-duplex, firstly, according to the estimated system parameters such as channel link coefficient, self-interference strength, noise level and transmit power, the full-duplex mode and half-duplex mode are calculated. The instantaneous channel capacity of the system in the working mode. Compare the instantaneous channel capacity in the two modes, and then select the mode with larger capacity to work. In this way, the full-du...

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Abstract

The invention provides a full-duplex and half-duplex mixed relay implementing method based on diversity gain. The method comprises steps as follows: step 1, estimating channel state information; step 2, selecting a transceiving mode of an antenna; step 3, calculating signal-to-interference and noise ratios of different links according to obtained parameters; step 4, calculating a signal-to-interference and noise ratio under an amplify-and-forward protocol and a decode-and-forward protocol in a full-duplex mode; step 5, calculating system capacity in the full-duplex mode; step 6, calculating link signal-to-interference and noise ratios in a half-duplex mode according to the channel state information obtained through estimation; step 7, calculating system signal-to-interference and noise ratio under the amplify-and-forward protocol and the decode-and-forward protocol in the half-duplex mode; step 8, calculating reachable capacity in the half-duplex mode; step 9, selecting an optimal working mode according to instantaneous spectrum effectiveness. According to the method, all hardware resources can be utilized, and performance is improved, that is, maximization of a transmission rate from a source node to a target node is realized.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method for realizing a full-duplex and half-duplex hybrid relay based on diversity gain. Background technique [0002] Full-duplex (Full Duplex) technology is a technology that enables the uplink and downlink of communication devices such as mobile terminals, base stations, and wireless access points to work in the same frequency band and the same time period. At present, our known communication systems all work in the Half Duplex (Half Duplex) state, that is, the uplink and downlink work in different frequency bands or different time periods, such as Time Division Duplex (Time Division Duplex, TDD) and Frequency division duplex system (Frequency Division Duplex, FDD). Compared with half-duplex, full-duplex technology has twice the spectral efficiency of the corresponding half-duplex system, so it has received extensive attention and research. On the other hand...

Claims

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Application Information

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IPC IPC(8): H04L5/14H04L5/16H04B1/40H04B1/60
CPCH04B1/40H04B1/60H04L5/14H04L5/16
Inventor 李成夏斌陈智勇
Owner SHANGHAI JIAO TONG UNIV
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