Method for realizing co-frequency full duplex wireless communication

A same-frequency full-duplex and wireless communication technology, which is applied in the shaping network of the transmitter/receiver, baseband system components, etc., can solve the problem of low utilization rate of TDD communication time occupied by the frequency bandwidth

Inactive Publication Date: 2013-08-14
吴嶽 +1
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  • Abstract
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Problems solved by technology

[0008] The purpose of the present invention is to overcome the shortcomings of occupying frequency bandwidth during FDD communication and low time utilization rate during TDD communication, and realize full-duplex wireless communication at the same frequency

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  • Method for realizing co-frequency full duplex wireless communication
  • Method for realizing co-frequency full duplex wireless communication
  • Method for realizing co-frequency full duplex wireless communication

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Embodiment Construction

[0013] The present invention is further described as follows in conjunction with accompanying drawing:

[0014] Due to the great difference in power between the transmitting signal and the receiving signal of the transceiver, the modulation method can only use the angle adjustment method, that is, the information is completely reflected by the change of the signal angle, the signal amplitude cannot carry information, and the angle adjustment is divided into frequency modulation and phase modulation. In the two ways, the phase information is obtained after the phase detection (18) in the figure. If the frequency modulation method is used, this information needs to be converted into frequency information after the difference (19). If the phase modulation method is used, the difference algorithm does not need it.

[0015] Canceller (8) is used for canceling because the isolation degree of circulator leaks to the transmit signal of receiver not enough, the transmit signal amplitude...

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Abstract

The invention discloses a method for realizing co-frequency full duplex wireless communication, which belongs to the field of wireless communication, aims to overcome defects of two basic duplex methods,namely, frequency division duplex (FDD) and time division duplex (TDD), of wireless communication, that is, FDD occupies wide frequency band and TDD is low in time availability, and consequentially realizes co-frequency full duplex wireless communication. According to the invention, both parties involved in communication have same signal band, receive and transmit signals simultaneously; angle modulation is taken as a signal modulation manner, and a sent radio-frequency signal is taken as a local oscillation signal of a receiver; the coherent reception technology is adopted for separating transceiving signals in the same frequency band; and a series of technologies including direct frequency conversion, signal offset, DC removal and adaptive filtering are combined to realize the purpose of co-frequency full duplex wireless communication. The method can be used for miniwatt bothway wireless communication.

Description

technical field [0001] The invention relates to a same-frequency full-duplex wireless communication method, in which the sending and receiving frequencies of both communication parties are the same, and the two-way communication is kept continuously. It belongs to the technical field of wireless communication. Background technique [0002] Duplexing is a technology that enables two-way communication. Duplex is divided into two types: full-duplex and half-duplex. Full-duplex means that both parties in communication send and receive signals at the same time; half-duplex means that both parties in communication send and receive signals in turn. [0003] Same-frequency communication means that the two parties in communication occupy the same frequency band for sending signals. [0004] Same-frequency full-duplex communication is a commonly used technology in wired communication, but in wireless communication, due to the great difference between the power of sending and receivi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/03
Inventor 吴嶽孙冬艳
Owner 吴嶽
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