Title:
A system and a method for canceling interference which uses a plurality of attenuation delay
Document Type and Number:
Japanese Patent JP6270069
Kind Code:
B2
Abstract:
A wireless communication device includes, in part, at least one antenna for receiving or transmitting a signal, and a cancelation circuit adapted to cancel or reduce the self-interference signal. The cancelation circuit includes, in part, a control block, N delay and attenuation paths, a combiner, and a subtractor. Each path includes a delay element and a variable attenuator whose attenuation level varies in response to a control signal generated by the control block. Each path receives a sample of the transmit signal and generates a delayed and attenuated (weighted) version of the sample signal. The combiner combines the N delayed and weighted versions of the sample signal to construct a signal representative of the self-interference signal. The subtractor subtracts the constructed signal from the received signal thereby cancel or reduce the self-interference signal therefrom.
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Inventors:
Hong, Stephen
Mailman, Jeff
Bukharadia, Danish
Cutty, Sachin
Mailman, Jeff
Bukharadia, Danish
Cutty, Sachin
Application Number:
JP2015516262A
Publication Date:
January 31, 2018
Filing Date:
June 07, 2013
Export Citation:
Assignee:
THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
International Classes:
H04B7/015; H04B1/10; H04B1/52; H04B1/56
Domestic Patent References:
| JP2001196994A | ||||
| JP2004056315A |
Foreign References:
| WO2009106515A1 | ||||
| US5691978 |
Attorney, Agent or Firm:
Longhua International Patent Service Corporation