Interference cancellation circuit, method of operating interference cancellation circuit, and wireless communication device

By introducing a kernel generation circuit, an adaptive filter, and a parameter control circuit into the wireless communication device, an interference model is generated and the algorithm parameters are adaptively adjusted. This solves the convergence speed problem when the channel characteristics of the interference signal change, and achieves efficient interference cancellation and improved communication performance.

CN121841383APending Publication Date: 2026-04-10SAMSUNG ELECTRONICS CO LTD
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Patent Information

Application Number
CN202511417311.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2024-10-08
Filing Date
2025-09-30
Publication Date
2026-04-10

AI Technical Summary

Technical Problem

When the channel characteristics of interference signals change suddenly, the convergence speed of the adaptive algorithm decreases, leading to a deterioration in interference removal performance. This is especially true in wireless communication systems, where self-interference and intermodulation interference are difficult to handle effectively.

Method used

An interference cancellation circuit is employed, including a kernel generation circuit, an adaptive filter, and a parameter control circuit. By generating an interference model, the interference signal is estimated, and the parameters of the adaptive algorithm are adaptively controlled based on the transmitted signal information, thereby improving the convergence speed of the filter.

Benefits of technology

It effectively removes interference signals and improves the overall communication performance of wireless communication devices, especially when channel characteristics change suddenly, maintaining a high level of interference cancellation.

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Abstract

An interference cancellation circuit, an operation method of the interference cancellation circuit, and a wireless communication apparatus are provided. The interference cancellation circuit may include a kernel generation circuit configured to: generate an interference model based on a transmit signal; an adaptive filter configured to: estimate coefficients of an interference model based on an adaptive algorithm to generate an interference estimation signal, and filter the interference estimation signal from the received signal to generate an interference cancellation signal; and a parameter control (PC) circuit configured to generate a control signal for controlling at least one parameter of the adaptive algorithm based on transmission signal information of the transmission signal, and transmit the control signal to the adaptive filter.
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