Multi-interference-source wide-frequency-coverage radio frequency self-interference cancellation device and method.

A cancellation device and interference cancellation technology, applied in baseband systems, digital transmission systems, electrical components, etc., can solve the problems of high device cost, difficult implementation, high reconstruction complexity, etc., to reduce complexity, reduce cost, The Effect of Simplifying Complexity
CN110324063AActive Publication Date: 2019-10-11UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
UNIV OF ELECTRONICS SCI & TECH OF CHINA
Publication Date
2019-10-11

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Abstract

The invention discloses a multi-interference-source wide-frequency-coverage radio frequency self-interference cancellation device and method. The multi-interference-source wide-frequency-coverage radio frequency self-interference cancellation device comprises a multi-interference-source interference reference signal down-conversion module, a multi-interference-source radio frequency domain interference reconstruction module, an interference reconstruction signal up-conversion module, a synthetic interference cancellation module, a power division module and an interference control module. According to the invention, down-conversion is carried out on multiple paths of wide-frequency interference reference signals. Mutiple paths of interference reference signals of fixed intermediate frequency are acquired. Each path of interference reference signal is reconstructed through a multi-interference-source radio frequency domain interference reconstruction module controlled by an interferencecontrol module. After the reconstruction signals are synthesized to obtain multi-interference-source interference reconstruction signals, the multi-interference-source interference reconstruction signals are subjected to up-conversion and radio frequency wide frequency returning, the multi-interference-source interference reconstruction signals are input into the interference synthesis cancellation module to be synthesized with the interfered radio frequency receiving signals to achieve interference cancellation, and complexity of interference reconstruction is reduced.
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Description

technical field

[0001] The invention relates to self-interference cancellation, in particular to a radio frequency self-interference cancellation device and method with multiple interference sources and wide frequency coverage. Background technique

[0002] At the same time, the same-frequency full-duplex technology breaks through the limitation of time-frequency resource utilization of existing time-division duplex and frequency-division duplex, and has the ability to double the spectrum efficiency. Since the local transmitter and receiver transmit and receive at the same time and frequency at the same time, the transmitted signal of the local transmitter will cause strong self-interference to the local receiver. In order to ensure normal communication, the receiver needs to effectively suppress the self-interference.

[0003] In the process of suppressing self-interference signals, it is often necessary to reconstruct radio frequency self-interference signals. However, in ...

Claims

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