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A full-duplex wireless communication device, method and system

A wireless communication device, full-duplex technology, applied in the direction of duplex signal operation, transmission system, baseband system components, etc., can solve the problem of high cost, high requirements for the number of antennas, placement accuracy, etc., and interference signal elimination effect Limited problems, to reduce system costs, eliminate interference signals, and reduce interference signals

Active Publication Date: 2016-09-14
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a full-duplex wireless communication device, method and system, aiming to solve the requirements for the number of antennas and the accuracy of placement position when using the existing technology to realize full-duplex wireless communication. High, the effect of interference signal elimination is limited, and the problem of high cost

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  • A full-duplex wireless communication device, method and system
  • A full-duplex wireless communication device, method and system
  • A full-duplex wireless communication device, method and system

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Embodiment 1

[0025] figure 1 The structure of the full-duplex wireless communication device provided by the first embodiment of the present invention is shown. For ease of description, only the parts related to the embodiment of the present invention are shown.

[0026] The full-duplex wireless communication device can be applied to point-to-point wireless communication systems, such as microwave systems, or other full-duplex wireless communication systems, and can also be extended to cellular and other communication systems. The full-duplex wireless The communication device includes a dual-polarized antenna 11, an analog domain cancellation module 12, and a digital domain cancellation module 13, wherein:

[0027] The first polarized antenna 111 in the dual-polarized antenna 11 is used to output the transmitted signal, and the second polarized antenna 112 is used to obtain the received signal. The received signal includes the useful signal and is polarized from the first antenna through the air ...

Embodiment 2

[0046] Figure 4 The structure of the full-duplex wireless communication device provided by the second embodiment of the present invention is shown. For ease of description, only the parts related to the embodiment of the present invention are shown. As an embodiment of the present invention, Figure 4 The illustrated embodiment of the present invention is a structure further implemented on the basis of the foregoing first embodiment.

[0047] In the embodiment of the present invention, Figure 4 The first polarized antenna 111 and the second polarized antenna 112, the second transmission sub-signal acquisition unit 121, the first analog-to-digital converter 122, and the third transmission sub-signal acquisition unit 123 are preset in the dual-polarization antenna. , The first interference signal cancellation unit 124, the second analog-to-digital converter 125, the second interference signal cancellation unit 131, and the output unit 132 are respectively the same as the first pol...

Embodiment 3

[0053] Figure 5 The implementation process of the full-duplex wireless communication method provided by the third embodiment of the present invention is shown, and the details are as follows:

[0054] In step S501, the first polarized antenna of the dual-polarized antenna outputs a transmission signal, and the second polarized antenna of the dual-polarized antenna obtains a received signal. The received signal includes a useful signal and the second polarized antenna through the air interface. The first transmitting sub-signal directly coupled by a polarized antenna.

[0055] In the specific implementation process, the dual-polarized antenna can usually be +45 degree and -45 degree polarized antennas, horizontally polarized and vertical polarized antennas, or other orthogonally polarized antennas, but the orthogonally polarized antenna The placement position between the antennas can be cancelled without accurate calculation, and the antenna use efficiency and practical value are h...

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Abstract

The present invention is applicable to the field of wireless communication technology, providing a full-duplex wireless communication device, method and system, by the first polarized antenna in the double polarization antenna output transmit signal, the second polarized antenna to obtain a useful signal comprising a useful signal and a received signal directly coupled from the first polarized antenna from the first emitter signal; The analog domain counter-elimination module acquires a second transmitter signal coupled from the transmitting signal, adjusts the amplitude and phase parameters of the second transmitter signal to convert it into a third emitter signal, eliminates the first emitter signal according to the third emitter signal, samples and eliminates the received signal after the first transmitter signal is a first digital signal, while sampling the second emitter signal as a second digital signal, and outputs the first digital signal and the second digital signal to the digital domain countervailing module; The digital domain anti-elimination module eliminates the second digital signal in the first digital signal, so that the interference signal is effectively reduced.

Description

Technical field [0001] The present invention belongs to the field of wireless communication technology, and in particular relates to a full-duplex wireless communication device, method and system. Background technique [0002] Spectrum is a precious resource. Wireless communication systems have been committed to introducing more complex technologies to improve the efficiency of spectrum use, including TDMA, CDMA, OFDM, new codecs, subsequent introduction of multi-antenna MIMO systems, and multi-cell Technologies such as joint processing are all tapping the efficiency of spectrum usage. In the use of frequency spectrum, the existing wireless communication system divides the duplex mode into time division multiplexing TDD, frequency division multiplexing FDD and half-duplex H-FDD, that is, separated in the frequency domain or separated in time. To send and receive, it is impossible to realize the full duplex mode of both receiving and transmitting at the same frequency or at the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/14H04L25/03
CPCH04B1/525H04B1/0475H04L5/14
Inventor 李云岗
Owner HUAWEI TECH CO LTD
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