Method and device for eliminating radio frequency interference
A technology for radio frequency interference and interference cancellation, applied in the field of communication, can solve the problems of inability to eliminate multipath signals and interference.
Active Publication Date: 2019-05-28
HUAWEI TECH CO LTD
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[0008] Embodiments of the present invention provide a radio frequency interference elimination method and device to solve the above-mentioned problem that the existing gradient descent-based radio frequency interference elimination method cannot eliminate multipath signals, and realize effective interference elimination
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[0070] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0071] figure 1 Shows the signal processing architecture in a full-duplex system. Such as figure 1 As shown, the full-duplex system transmits the signal to be transmitted through a circulator or a power splitter after digital processing, digital-to-analog conversion, analog processing, and coupling processing of a coupler; while a full-dupl...
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The invention provides a radio frequency interference elimination method and device. The radio frequency interference elimination method comprises steps of estimating and calculating power of a searching point of a radio frequency signal to be processed, obtaining multipath parameters of the searching point according to power of the searching point, wherein the multipath parameters are signal parameters on multiple paths, establishing an estimation self-interference signal according to multipath parameters of the searching point and adopting an estimation self-interference signal to perform interference elimination on the radio frequency signal to be processed. The radio frequency interference elimination method and device construct a pre-estimation self-interference signal through multipath parameters of the searching point, and uses a self-interference signal to eliminate a multipath signal in a radio frequency signal to be processed to realize effective elimination of radio frequency interference elimination, wherein the multipath signal is the multipath radio frequency interference.
Description
technical field [0001] Embodiments of the present invention relate to communication technologies, and in particular to a radio frequency interference elimination method and device. Background technique [0002] Full duplex means sending and receiving at the same time using the same frequency band. Compared with traditional time division duplexing (Time Division Duplexing, referred to as: TDD) and frequency division duplexing (Frequency Division Duplexing, referred to as: FDD), the spectrum utilization rate of full-duplex is doubled, but full-duplex will bring from interference problem. In practical applications, the self-interference signal is often much larger than the useful signal, which will cause the communication parties to fail to communicate normally; and if the received signal is directly connected to the Analog to Digital Converter (Analog to Digital Converter, referred to as: ADC), It will cause the ADC to be saturated or even burned, so it is necessary to elimi...
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IPC IPC(8): H04B1/12
Inventor 吴广生潘文生沈莹邵士海赵旭
Owner HUAWEI TECH CO LTD