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A Simultaneous Same-Frequency Full-Duplex Electromagnetic Communication Method Based on Time Reversal

A co-frequency full-duplex, time inversion technology, applied in the field of microwave technology and communication, can solve the problem of large space in the front-end of sending and receiving, and achieve the effect of reducing complexity, increasing system capacity, and improving communication rate

Inactive Publication Date: 2018-10-16
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As mentioned above, the current main schemes all use multi-antennas, that is, antenna arrays. However, according to traditional theories, in order to obtain good space diversity gain and space multiplexing gain for multi-antenna systems, the distance between antenna elements is required to be no less than half the working wavelength. This leads to a large space occupied by the front end of the transceiver, which is contrary to the development trend of miniaturization of mobile terminals.

Method used

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  • A Simultaneous Same-Frequency Full-Duplex Electromagnetic Communication Method Based on Time Reversal
  • A Simultaneous Same-Frequency Full-Duplex Electromagnetic Communication Method Based on Time Reversal
  • A Simultaneous Same-Frequency Full-Duplex Electromagnetic Communication Method Based on Time Reversal

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Embodiment

[0019] The principle topology of the simultaneous and same-frequency full-duplex communication method provided in this embodiment is as follows: figure 2 As shown, adopt the following technical scheme:

[0020] A simultaneous same-frequency full-duplex electromagnetic communication method based on time reversal. The communication parties are respectively recorded as A terminal and B terminal, and each terminal includes a receiving antenna (R A , R B ) and the transmitting antenna (T A , T B ), the transmitting antenna T A , T B Both are array antennas that contain 3 antenna units and are spaced in a sub-wavelength distribution, and specifically include the following steps:

[0021] Step 1. For the communicating party A, on its receiving antenna R A Up-stimulate and emit a probe signal H for testing the channel A (t), after the space channel transmission, the other party of the communication is the transmitting antenna T of the B terminal B The probe signal is received...

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Abstract

The invention discloses a simultaneous same-frequency full-duplex electromagnetic communication method based on time reversal, and relates to the field of microwave technology. The present invention utilizes the time-space focusing and super-resolution focusing characteristics of time-reversal electromagnetic waves, and only needs to separate the receiving and sending ends of the communication parties at sub-wavelength intervals to realize the self-interference signal detection of the receiving and sending ends of the same communication party. Effective suppression. At the same time, due to the use of time-reversal technology, even if the interval between the antenna units is in the sub-wavelength state, the corresponding transceiver channels are still independent, so the simultaneous same-frequency full-duplex communication method provided by the present invention can effectively reduce the complexity of the communication module. Speed, increase communication rate, increase system capacity.

Description

technical field [0001] The invention relates to the field of microwave technology and the field of communication, in particular to a simultaneous same-frequency full-duplex electromagnetic communication method based on time inversion. Background technique [0002] Current mainstream wireless communication systems usually adopt a half-duplex (Half-duplex) communication mode, such as Time-division duplexing (TDD) and Frequency-division duplexing (FDD). Time division duplex uses time division multiplexing to isolate the transmit channel and receive channel from each other in time in the same channel; while frequency division duplex uses two different channels to assign the transmit channel and receive channel respectively, while in Realize simultaneous but different frequency sending and receiving functions in time. Since the traditional half-duplex communication mode cannot transmit and receive information simultaneously on the same channel with the same polarization, wireles...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/40H04B1/52H04L5/14H04L25/08
CPCH04B1/40H04B1/525H04L5/14H04L25/085
Inventor 张一明李家林王秉中
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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