Full-duplex energy acquisition relay adaptive antenna selection transmission method

An adaptive antenna and energy harvesting technology, applied in the field of communication, can solve problems such as regular replacement, high network maintenance costs, and inconvenient large-scale use of relay networks

Active Publication Date: 2017-05-10
HUAQIAO UNIVERSITY
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Problems solved by technology

It can be applied in cellular communication systems, indoor wireless communication systems, etc. In recent years, the research on energy harvesting technology in wireless networks has received extensive attention. For relay networks that are not convenient for

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  • Full-duplex energy acquisition relay adaptive antenna selection transmission method
  • Full-duplex energy acquisition relay adaptive antenna selection transmission method
  • Full-duplex energy acquisition relay adaptive antenna selection transmission method

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Embodiment Construction

[0020] Below in conjunction with accompanying drawing, the present invention will be further described,

[0021] see figure 1 (a) and 1(b), figure 1 (a) contains three nodes, which are the source S, the relay R and the sink D. The full-duplex relay is free to configure several antennas for receiving and sending signals. The other nodes are all single antennas, and the relay is Passive nodes need to use wireless energy harvesting to supply energy for their work. Due to the long distance between the source and the destination, there is no direct path. The relay works in full-duplex mode. The relay uses part of the received information for energy collection, and the collected energy is used to forward another part of the information. The relay uses interference self-cancellation technology to eliminate self-interference signals. All channels in the system Both use Rayleigh fading channels, and the information transmission process between the source and the sink is completed in ...

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Abstract

The invention discloses a full-duplex energy acquisition relay adaptive antenna selection transmission method. There are three optional schemes for a transceiving apparatus of a relay antenna. According to the first scheme, one antenna which enables gain from a source to a relay channel to reach the maximum is selected from all antennas of a relay for receiving source signals, and afterwards, an antenna which enables gain from the relay to a sink channel to reach the maximum is selected from residual antennas for forwarding source information to the sink. According to the second scheme, transceiving antennas of the relay are directly selected at the same time so that the self-interference channel gain is enabled to be the smallest. According to the third scheme, first of all, one antenna which enables grain from a source to a relay channel to be the maximum is selected from all the antennas of the relay for receiving source signals, and afterwards, one antenna which enables the gain of a self-interference channel to be the smallest is selected from residual antennas for forwarding source information to a sink. According to the invention, a system can adaptively switch the three antenna selection schemes based on calculation of an instantaneous rate, the transmission rate of the system is enabled to the maximized, and the transmission method is applied to some relay networks not convenient for large-scale wired energy supply.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a full-duplex energy harvesting relay adaptive antenna selection transmission method. Background technique [0002] The same-frequency simultaneous full-duplex technology is considered to be an effective technology to improve spectral efficiency. This technology realizes the transmission of signals in two directions on the same physical channel, that is, by eliminating its own transmitter at the receiver of the communication duplex node. Signal interference, at the same time as the transmitter signal, receives the same frequency signal from another node. Compared with the traditional time division duplex (TDD) and frequency division duplex (FDD), the same frequency and simultaneous full duplex can improve the spectral efficiency doubled. At present, the same-frequency and simultaneous full-duplex technology is gradually becoming a new research hotspot in the field of wire...

Claims

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Application Information

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IPC IPC(8): H04B7/155H04B7/06H04B7/08
CPCH04B7/061H04B7/0802H04B7/1555H04B7/15564
Inventor 赵睿聂志巧袁毅谭星方嘉佳
Owner HUAQIAO UNIVERSITY
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