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Self-interference cancellation implementation method and device and storage medium

A technology of self-interference cancellation and realization method, applied in transmission monitoring, baseband system, digital transmission system, etc., can solve the problems that the existing technology is no longer applicable, the signal strength of far-field self-interference and the number of multipath cannot be measured in advance.

Inactive Publication Date: 2021-01-29
CHINA MOBILE SUZHOU SOFTWARE TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the contrary, the far-field self-interference signal is strongly correlated with the surrounding environment. Obstacles in the environment are the main cause of far-field self-interference. The number of obstacles and the unpredictability of their movement lead to the strength of far-field self-interference signal and The number of multipaths cannot be measured in advance, so the existing technology is no longer applicable

Method used

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  • Self-interference cancellation implementation method and device and storage medium
  • Self-interference cancellation implementation method and device and storage medium
  • Self-interference cancellation implementation method and device and storage medium

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Embodiment Construction

[0052]In the embodiment of the present invention, the preset channel model is used to generate the simulated received signal according to the preset estimated input signal; the channel estimation is performed on the self-interference channel by using the preset channel estimation rule according to the actual transmitted signal and the simulated received signal; according to the For transmitting a signal, using the self-interference channel estimation result to determine a self-interference signal of the transmitted signal; subtracting the self-interference signal of the transmitted signal from the actual received signal to obtain a received signal that cancels the self-interference signal.

[0053] The present invention will be described in further detail below in conjunction with the examples.

[0054] The implementation method of self-interference cancellation provided by the embodiment of the present invention, such as image 3 As shown, the method includes:

[0055] Step ...

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Abstract

The invention discloses a self-interference cancellation implementation method, which comprises the following steps of: generating a simulation receiving signal by adopting a preset channel model according to a preset estimation input signal; performing channel estimation on the self-interference channel by adopting a preset channel estimation rule according to the actual transmitting signal and the simulation receiving signal; determining a self-interference signal of the transmitting signal by adopting the self-interference channel estimation result according to the transmitting signal; andsubtracting the self-interference signal of the transmitting signal from the actual receiving signal to obtain a receiving signal for counteracting the self-interference signal. The invention discloses a self-interference cancellation implementation device and a storage medium.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method, device and storage medium for realizing self-interference cancellation. Background technique [0002] In-band full-duplex (IBFD), also known as simultaneous same-frequency full-duplex, can realize simultaneous transmission of uplink and downlink data in the same frequency band. At the same time, the self-interference problem introduced by IBFD at the same frequency at the same time has gradually become a research hotspot. Such as figure 1 As shown, the self-interference includes the leakage self-interference between the transmit chain and the receive chain of the circulator and the direct path strong self-interference between multiple antennas. [0003] At present, the solution to the self-interference problem focuses on the cancellation of near-field self-interference, including: antenna position cancellation method and radio frequency domain c...

Claims

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Application Information

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IPC IPC(8): H04B1/525H04B1/10H04B17/00H04B17/391H04L25/02
CPCH04B1/1027H04B1/525H04B17/0085H04B17/0087H04L25/0256H04B17/3911H04B17/3912
Inventor 杨靖靖
Owner CHINA MOBILE SUZHOU SOFTWARE TECH CO LTD