Invention Grant
- Patent Title: Adaptive non-linear interference cancellation for intermodulation distortion
- Patent Title (中): 用于互调失真的自适应非线性干扰消除
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Application No.: US13925651Application Date: 2013-06-24
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Publication No.: US09231801B2Publication Date: 2016-01-05
- Inventor: Roberto Rimini , Jibing Wang
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Holland & Hart LLP
- Main IPC: H04L27/00
- IPC: H04L27/00 ; H04B1/10 ; H04W16/14

Abstract:
A wireless communication device including two or more aggressor transmitters and a victim receiver that is adversely affected by intermodulation distortion (IMD) components associated with the signals transmitted by the two or more aggressor transmitters. Because the aggressor transmitters and the victim receiver are located on the same device, the transmit waveforms that contribute to the IMD components are known and available. More specifically, digital baseband samples used by the aggressor transmitters to generate the transmit waveforms are available. These digital baseband samples are used to reconstruct the IMD component on the wireless device. This reconstructed (estimated) IMD component is provided to the victim receiver, and is subtracted from a signal received by the victim receiver, thereby effectively removing the IMD component present in this received signal. An adaptive filter using a Volterra series can be used to estimate the IMD component in response to the transmitter digital baseband samples.
Public/Granted literature
- US20140269857A1 Adaptive Non-Linear Interference Cancellation For Intermodulation Distortion Public/Granted day:2014-09-18
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