Invention Grant
- Patent Title: Method and system for mitigating the effects of a transmitted blocker and distortions therefrom in a radio receiver
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Application No.: US14080604Application Date: 2013-11-14
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Publication No.: US09755691B2Publication Date: 2017-09-05
- Inventor: Andrew Joo Kim , Stephane Laurent-Michel , Stephen Jantzi
- Applicant: Andrew Joo Kim , Stephane Laurent-Michel , Stephen Jantzi
- Agency: Trellis IP Law Group, PC
- Main IPC: H04B1/525
- IPC: H04B1/525 ; H04L25/06 ; H04L7/033 ; H04L27/26 ; H04B1/10

Abstract:
A radio receiver processing path has a mixer with active interference/blocker cancellation to reduce the intensity of leaked and undesired signals by using a replica of the transmitted signal, emulating the phase and attenuation through the leakage path and subtracting the emulated signal within the mixer. Intermodulation distortions are predicted through the use of nonlinear modeling in the digital baseband between the baseband transmitter and baseband receiver and subsequently subtracted from the received signal. The nonlinear basis functions are combined to model the composite nonlinearity in the signal path based on digital baseband transmitted data. The modeled nonlinearity is subtracted from the received signal, and the result is observed and used to guide the nonlinear modeling parameters using self-contained control loops.
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