WO2015021481A3 - Self-interference cancellation - Google Patents
Self-interference cancellation Download PDFInfo
- Publication number
- WO2015021481A3 WO2015021481A3 PCT/US2014/050584 US2014050584W WO2015021481A3 WO 2015021481 A3 WO2015021481 A3 WO 2015021481A3 US 2014050584 W US2014050584 W US 2014050584W WO 2015021481 A3 WO2015021481 A3 WO 2015021481A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- self
- signal
- multitude
- samples
- frequency response
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/1461—Suppression of signals in the return path, i.e. bidirectional control circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/50—Circuits using different frequencies for the two directions of communication
- H04B1/52—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
- H04B1/525—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa with means for reducing leakage of transmitter signal into the receiver
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Noise Elimination (AREA)
- Transceivers (AREA)
Abstract
A wireless communication device includes, in part, an analog interference cancellation circuit and a controller. The analog cancellation circuit includes a multitude of delay paths each including a delay element and a variable attenuator. The controller dynamically varies the attenuation level of each of the variable attenuators in accordance with the frequency response characteristic of that attenuator to remove a portion of a self-interference signal present in a signal received by the device. The device measures the frequency response characteristic of the communication channel, used in determining the attenuation levels, via one or more preamble symbols. A second portion of the self-interference signal is removed by the device using a multitude of samples of a transmitted signal and a multitude of samples of a signal to be transmitted.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201361864492P | 2013-08-09 | 2013-08-09 | |
US61/864,492 | 2013-08-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2015021481A2 WO2015021481A2 (en) | 2015-02-12 |
WO2015021481A3 true WO2015021481A3 (en) | 2015-03-26 |
Family
ID=52462063
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2014/050584 WO2015021481A2 (en) | 2013-08-09 | 2014-08-11 | Self-interference cancellation |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2015021481A2 (en) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10284356B2 (en) | 2011-02-03 | 2019-05-07 | The Board Of Trustees Of The Leland Stanford Junior University | Self-interference cancellation |
US10230419B2 (en) | 2011-02-03 | 2019-03-12 | The Board Of Trustees Of The Leland Stanford Junior University | Adaptive techniques for full duplex communications |
US10243719B2 (en) | 2011-11-09 | 2019-03-26 | The Board Of Trustees Of The Leland Stanford Junior University | Self-interference cancellation for MIMO radios |
US9325432B2 (en) | 2012-02-08 | 2016-04-26 | The Board Of Trustees Of The Leland Stanford Junior University | Systems and methods for full-duplex signal shaping |
US11163050B2 (en) | 2013-08-09 | 2021-11-02 | The Board Of Trustees Of The Leland Stanford Junior University | Backscatter estimation using progressive self interference cancellation |
WO2015168700A1 (en) | 2014-05-02 | 2015-11-05 | The Board Of Trustees Of The Leland Stanford Junior University | Method and apparatus for tracing motion using radio frequency signals |
FR3046513A1 (en) | 2016-01-04 | 2017-07-07 | Commissariat Energie Atomique | IBFD RECEIVER TRANSMITTER WITH NON-RECIPROCA FREQUENCY TRANSPOSITION MODULE |
US10338205B2 (en) | 2016-08-12 | 2019-07-02 | The Board Of Trustees Of The Leland Stanford Junior University | Backscatter communication among commodity WiFi radios |
US10393859B2 (en) | 2016-10-17 | 2019-08-27 | Raytheon Company | System and method for adaptive simultaneous transmit and receive leakage cancellation |
WO2018081319A1 (en) | 2016-10-25 | 2018-05-03 | The Board Of Trustees Of The Leland Stanford Junior University | Backscattering ambient ism band signals |
US10714828B2 (en) * | 2017-02-27 | 2020-07-14 | Raytheon Company | Microwave analog cancellation for in-aperture simultaneous transmit and receive |
US10904042B2 (en) | 2017-09-29 | 2021-01-26 | Tektronix, Inc. | Passive variable continuous time linear equalizer with attenuation and frequency control |
JP2019146163A (en) * | 2018-02-05 | 2019-08-29 | テクトロニクス・インコーポレイテッドTektronix,Inc. | Noise filter and noise reduction method |
US11792833B2 (en) * | 2019-05-14 | 2023-10-17 | Qualcomm Incorporated | Analog phased-array repeaters with digitally-assisted frequency translation and phase adjustment |
CN113746494B (en) * | 2020-05-15 | 2022-10-18 | 华为技术有限公司 | Echo cancellation method and transceiver |
US11424900B2 (en) * | 2020-10-07 | 2022-08-23 | Apple Inc. | Leakage and noise cancelling for double balanced duplexers |
US11982751B2 (en) | 2020-11-24 | 2024-05-14 | Honeywell International Inc. | GNSS anti-jamming using interference cancellation |
CN113691990A (en) * | 2021-07-16 | 2021-11-23 | 德清阿尔法创新研究院 | Heterogeneous network intelligent coexistence method based on signal-to-noise ratio redundancy and interference elimination technology |
WO2023012369A1 (en) * | 2021-08-06 | 2023-02-09 | Technological University Dublin | Interference cancellation system for wireless communication networks |
CN115065374A (en) * | 2022-04-27 | 2022-09-16 | 深圳市国电科技通信有限公司 | Power line carrier communication transceiver and power line carrier communication system |
CN116647250B (en) * | 2023-06-29 | 2024-05-10 | 电子科技大学 | Subarray-level same-frequency full-duplex array antenna radio frequency domain broadband self-interference signal cancellation method |
CN117220714B (en) * | 2023-11-09 | 2024-01-26 | 成都信息工程大学 | Self-interference combined suppression method and device suitable for full duplex communication |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050129152A1 (en) * | 2003-12-15 | 2005-06-16 | Hillstrom Timothy L. | Method and sytem for noise reduction in measurement receivers using automatic noise subtraction |
US20090047914A1 (en) * | 2003-05-27 | 2009-02-19 | Interdigital Technology Corporation | Multi-mode radio with interference cancellation circuit |
US20100014600A1 (en) * | 2008-07-18 | 2010-01-21 | Advanced Micro Devices, Inc. | Window position optimization for pilot-aided ofdm system |
US20110268232A1 (en) * | 2010-05-03 | 2011-11-03 | Chester Park | Inter-carrier bandwidth control for mitigating iq imbalance |
US20110319044A1 (en) * | 2010-06-28 | 2011-12-29 | Itt Manufacturing Enterprises, Inc. (A Subsidiary Of Itt Corporation) | Adaptive cancellation of multi-path interferences |
US20120154249A1 (en) * | 2010-12-13 | 2012-06-21 | Nec Laboratories America, Inc. | Method for antenna cancellation for wireless communication |
US20120201153A1 (en) * | 2011-02-03 | 2012-08-09 | Dinesh Bharadia | Adaptive techniques for full duplex communications |
-
2014
- 2014-08-11 WO PCT/US2014/050584 patent/WO2015021481A2/en active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090047914A1 (en) * | 2003-05-27 | 2009-02-19 | Interdigital Technology Corporation | Multi-mode radio with interference cancellation circuit |
US20050129152A1 (en) * | 2003-12-15 | 2005-06-16 | Hillstrom Timothy L. | Method and sytem for noise reduction in measurement receivers using automatic noise subtraction |
US20100014600A1 (en) * | 2008-07-18 | 2010-01-21 | Advanced Micro Devices, Inc. | Window position optimization for pilot-aided ofdm system |
US20110268232A1 (en) * | 2010-05-03 | 2011-11-03 | Chester Park | Inter-carrier bandwidth control for mitigating iq imbalance |
US20110319044A1 (en) * | 2010-06-28 | 2011-12-29 | Itt Manufacturing Enterprises, Inc. (A Subsidiary Of Itt Corporation) | Adaptive cancellation of multi-path interferences |
US20120154249A1 (en) * | 2010-12-13 | 2012-06-21 | Nec Laboratories America, Inc. | Method for antenna cancellation for wireless communication |
US20120201153A1 (en) * | 2011-02-03 | 2012-08-09 | Dinesh Bharadia | Adaptive techniques for full duplex communications |
Also Published As
Publication number | Publication date |
---|---|
WO2015021481A2 (en) | 2015-02-12 |
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