Title:
RECEIVER PATH DISTORTION MITIGATION USING ADAPTIVE FILTER FEEDBACK
Document Type and Number:
WIPO Patent Application WO/2017/118272
Kind Code:
A1
Abstract:
A duplex communication system includes a duplexer for transmitting and receiving signals, a transmitter part connected to the duplexer, and a receiver part connected to the duplexer, the receiver part comprising an amplifier for amplifying a received signal to provide an amplified received signal and a demodulator for downconverting the amplified received signal, and a second-order intermodulation distortion (IMD2) compensation module for compensating for second-order intermodulation distortion. The system also includes an adaptive filtering module that obtains a transmitter reference signal, generates filter coefficients for the IMD2 compensation module and also adjusts a direct current (DC) bias of the demodulator based on the reference signal.
Inventors:
HOU WEIKUN (CA)
AHARONY AHIKAM (CA)
AHARONY AHIKAM (CA)
Application Number:
PCT/CN2016/110799
Publication Date:
July 13, 2017
Filing Date:
December 19, 2016
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04B1/525
Domestic Patent References:
| WO2004036776A1 | 2004-04-29 |
Foreign References:
| US20120140685A1 | 2012-06-07 | |||
| US20140334349A1 | 2014-11-13 | |||
| US20130155911A1 | 2013-06-20 |
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