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Information transceiving method in co-time co-frequency full duplex communication

A co-frequency full-duplex and identical technology, applied in electrical components, transmission systems, antenna arrays, etc., can solve the problems of self-interference in CCFD communication systems, lack of wireless communication spectrum resources, limited communication rates, etc., to eliminate self-interference, High-performance simultaneous co-frequency full-duplex communication, solving the effect of limited communication rate

Inactive Publication Date: 2016-11-09
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0009] The purpose of the present invention is to provide a method for sending and receiving information in simultaneous and same-frequency full-duplex communication, so as to solve the self-interference problem of CCFD communication system
The present invention can realize CCFD communication without additional interference elimination technology, and can effectively solve the problems of lack of frequency spectrum resources and limited communication rate in existing wireless communication

Method used

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  • Information transceiving method in co-time co-frequency full duplex communication
  • Information transceiving method in co-time co-frequency full duplex communication
  • Information transceiving method in co-time co-frequency full duplex communication

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Embodiment Construction

[0037] The present invention will be further described below in combination with specific embodiments and accompanying drawings.

[0038] 1. Generation of vortex electromagnetic waves

[0039] For an array antenna (non-linear array) with a total of N array elements, vortex electromagnetic waves of different OAM modes can be generated by applying excitations of equal amplitude and certain phase difference between adjacent array elements to each array element. Let the excitation phase of the first array element be α 1 , by controlling the excitation phases of other array elements, their phases increase or decrease sequentially (the phases can also change clockwise or counterclockwise) 2πl / N, l is the topological charge, that is, the kth (k=1,2 ,...,n) excitation phase α of array elements k for alpha 1 ±2πlk / N, the array antenna with the total number of array elements N can generate vortex electromagnetic waves with OAM mode l or -l, where the total number of array elements N ...

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Abstract

The invention discloses an information transceiving method in co-time co-frequency full duplex communication. In a vortex electromagnetic wave structure generating n (n>1) orbital angular momentum (OAM) modes, arbitrary k (0<k<n) modes of the n OAM modes are used for information sending and the remaining (n-k) OAM modes are used for information receiving by means of orthogonal property of the OAM modes, multiple signals which are independent to each other and do not interfere with each other can be simultaneously sent and received by the same frequency band in no need of extra self-interference elimination measure, high-rate and high-capacity co-time co-frequency full duplex communication is further achieved, the problems of existing wireless communication spectrum resource shortage, limited communication rate and the like are effectively solved, and a solution idea is provided for modern high-rate and high-capacity wireless communication.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a method for sending and receiving information in simultaneous and same-frequency full-duplex communication. Background technique [0002] With the rapid development of mobile communication technology, the wireless communication rate has also been improved, and how to improve spectrum utilization has become the focus of attention. In order to make full use of the limited spectrum resources and improve spectrum utilization, the Co-time Co-frequency Full Duplex (CCFD) technology has emerged as the times require. The traditional duplex mode is mainly frequency division duplex (Frequency Division Duplexing, FDD) and time division duplex (Time Division Duplexing, TDD), in order to avoid large signal during transmission to receive small signal in frequency domain and time domain on the interference. In order to reduce the overhead of frequency or time slot ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/00H01Q25/04H04B1/525
CPCH01Q21/00H01Q25/04H04B1/525
Inventor 李家林张香博张一明王秉中
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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