Grigory Itkin,
Infineon Technologies AG, Munich, Germany, itkin64@googlemail.com
Oleg Varlamov,
Institute of Radio and Information Systems (IRIS), Vienna, Austria, ovarlamov@media-publisher.eu https://orcid.org/0000-0002-3996-9156
DOI: 10.36724/2664-066X-2024-10-1-8-17
SYNCHROINFO JOURNAL. Volume 10, Number 1 (2024). P. 8-17.
Abstract
Elimination of receiver (RX) band-pass filters is actual task for construction of next generation New Radio Wireless Transceivers and other modern equipment (Multiple Input Multiple Output systems, radar applications, etc.) based on software-defined radio. Unfortunately, some new problems with electromagnetic compatibility arise. Main problem start up with Frequency Division Duplex mode, were part of high power transmitter (TX) signal came to high sensitivity RX input through duplexer with limited isolation. In presence of high TX signal RX mixer could come into non-linear working area and RX sensitivity is decreases. This problem may be solved by cancellation of TX signal from RX path. This article provides a preliminary approach to the problem of active TX signal cancellation in RX signal path with cancellation is at least 25 dB, and relatively small additional power consumption and noise. After critical parameters identifying, based on mathematical expressions, the requirements for cancellation blocks parameters are determined. Simplest implementations of the proposed structure are simulated.
Keywords: Radio transmitters, Receivers, Full-duplex, Self-interference cancellation
References
[1] J. Zhou, A. Chakrabarti, P. R. Kinget and H. Krishnaswamy, “Low-Noise Active Cancellation of Transmitter Leakage and Transmitter Noise in Broadband Wireless Receivers for FDD/Co-Existence,” IEEE Journal of Solid-State Circuits, vol. 49, no. 12, pp. 3046-3062, Dec. 2014, doi: 10.1109/JSSC.2014.2359914.
[2] L. Laughlin et al., “Tunable Frequency-Division Duplex RF Front End Using Electrical Balance and Active Cancellation,” IEEE Transactions on Microwave Theory and Techniques, vol. 66, no. 12, pp. 5812-5824, Dec. 2018, doi: 10.1109/TMTT.2018.2851990.
[3] S. Sadjina, C. Motz, T. Paireder, M. Huemer and H. Pretl, “A Survey of Self-Interference in LTE-Advanced and 5G New Radio Wireless Transceivers,” IEEE Transactions on Microwave Theory and Techniques, vol. 68, no. 3, pp. 1118-1131, March 2020, doi: 10.1109/TMTT.2019.2951166.
[4] Y. Cao and J. Zhou, “Integrated Self-Adaptive and Power-Scalable Wideband Interference Cancellation for Full-Duplex MIMO Wireless,” IEEE Journal of Solid-State Circuits, vol. 55, no. 11, pp. 2984-2996, Nov. 2020, doi: 10.1109/JSSC.2020.3005755.
[5] J. Zhang, Z. Zhang, Y. Li, C. Gu and J. Mao, “Target Detection with Short-Range FMCW Radar Based on Time-Frequency Characteristic-Based Leakage Cancellation Technique,” IEEE Transactions on Microwave Theory and Techniques, doi: 10.1109/TMTT.2024.3360324.
[6] A. Nagulu et al., “A Full-Duplex Receiver with True-Time-Delay Cancelers Based on Switched-Capacitor-Networks Operating Beyond the Delay–Bandwidth Limit,” IEEE Journal of Solid-State Circuits, vol. 56, no. 5, pp. 1398-1411, May 2021, doi: 10.1109/JSSC.2021.3063658.
[7] L. Anttila et al., “Full-Duplexing with SDR Devices: Algorithms, FPGA Implementation, and Real-Time Results,” in IEEE Transactions on Wireless Communications, vol. 20, no. 4, pp. 2205-2220, April 2021, doi: 10.1109/TWC.2020.3040226.
[8] S. Song et al., “Digital Self-Interference Cancellation with Robust Multi-layered Total Least Mean Squares Adaptive Filters,” 2023 IEEE 98th Vehicular Technology Conference (VTC2023-Fall), Hong Kong, Hong Kong, 2023, pp. 1-5, doi: 10.1109/VTC2023-Fall60731.2023.10333436.
[9] J. Tamminen et al., “Digitally-controlled RF self-interference canceller for full-duplex radios,” 2016 24th European Signal Processing Conference (EUSIPCO), Budapest, Hungary, 2016, pp. 783-787, doi: 10.1109/EUSIPCO.2016.7760355.
[10] X. Huang, A. Tuyen Le and Y. J. Guo, “Joint Analog and Digital Self-Interference Cancellation for Full Duplex Transceiver with Frequency-Dependent I/Q Imbalance,” IEEE Transactions on Wireless Communications, vol. 22, no. 4, pp. 2364-2378, April 2023, doi: 10.1109/TWC.2022.3211316.
[11] A. Kurt, M. B. Salman, U. B. Sarac and G. M. Guvensen, “An Adaptive-Iterative Nonlinear Interference Cancellation in Time-Varying Full-Duplex Channels,” IEEE Transactions on Vehicular Technology, vol. 72, no. 2, pp. 1862-1878, Feb. 2023, doi: 10.1109/TVT.2022.3208766.
[12] M. H. Attar et al., “Towards Adaptive Digital Self-Interference Cancellation in Full-Duplex Wireless Transceivers: APSM vs. Neural Networks,” 2022 56th Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, USA, 2022, pp. 1223-1227, doi: 10.1109/IEEECONF56349.2022.10052049.