基于辅助符号的非线性自干扰抵消算法及其简化实现

王丹; 黄开枝; 李云洲

doi:10.11999/JEIT160291

基于辅助符号的非线性自干扰抵消算法及其简化实现

doi: 10.11999/JEIT160291

2.
(解放军信息工程大学国家数字交换系统工程技术研究中心郑州 450002) ②(清华大学信息技术研究院无线与移动通信技术研究中心北京 100084)

基金项目:

国家973计划项目(2013CB329002)，国家863计划项目(2014AA01A703)，国家重大专项(2014ZX03003002-002)，新世纪优秀人才支持计划(NCET-13-0321)，国家自然科学基金创新群体(61321061)

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出版历程
- 收稿日期: 2016-03-28
- 修回日期: 2016-09-06
- 刊出日期: 2017-01-19

Auxiliary Symbol-based Nonlinear Self-interference Cancellation Algorithm and Simplified Implementation

2.
(National Digital Switching System Engineering &

Funds:

The National 973 Program of China (2013CB329002), The National 863 Program of China (2014AA01A703), The National Major Project (2014ZX03003002-002), The Program for New Century Excellent Talents in University (NCET-13-0321), The National Natural Science Foundation of Innovation Group (61321061)

摘要

摘要: 同频同时全双工是第5代(5G)通信关键技术之一，数字自干扰抵消算法是其重要研究方向。针对非线性数字自干扰抵消算法中，失真系数估计受到自干扰信道估计误差的影响这一问题，该文提出一种基于辅助符号的非线性自干扰抵消算法，通过对辅助符号做自干扰抵消，将信道估计符号的失真误差映射到其抵消结果中并提取出来，从中估计失真系数。接着针对算法开销问题提出一种简化实现方案。仿真结果显示，接收自干扰信号为-5 dBm时，算法可将自干扰非线性失真分量抵消至约-100 dBm，且性能随接收自干扰功率降低而提高。
- 5G /
- 同频同时全双工 /
- 数字自干扰抵消 /
- 非线性失真估计
Abstract: In-band full duplex is a key concept brought up in 5G, and digital Self-Interference (SI) cancellation has become an important field attracting much attention. SI channel estimation error introduced by nonlinear distortion leads to deleterious effect on the accurate estimation of distortion coefficient. This paper proposes a nonlinear SI cancellation algorithm based on an auxiliary symbol. The channel estimation error is mapped into cancellation residuals by performing SI cancellation for the designed auxiliary symbol, and then extracted to be an independent attributor for distortion coefficient estimation. A simplified implementation is proposed further for reducing the overhead of the algorithm. Simulation results show that the nonlinear SI component is suppressed to about -100 dBm with -5 dBm SI power received. In addition, the lower the received SI power is, the better the performance tends to be.
- 5G /
- In-band full duplex /
- Digital Self-Interference (SI) cancellation /
- Nonlinear distortion estimation

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参考文献(20)

CHOI J I, JAIN M, SRINIVASAN K, et al. Achieving single channel, full duplex wireless communications[C]. Proceedings of the 16th Annual International Conference on Mobile Computing and Networking, Chicago, IL, USA, 2010: 1-12. doi: 10.1145/1859995.1859997.

JAIN M, CHOI J I, KIM T, et al. Practical, real-time, full duplex wireless[C]. Proceedings of 17th Annual International Conference on Mobile Computing and Networking, Las Vegas, NV, USA, 2011: 301-312. doi: 10.1145/2030613.2030647.

DUARTE M and SABHARWAL A. Full-duplex wireless communications using off-the-shelf radios: Feasibility and first results[C]. Proceedings of the 44th Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, USA, 2010: 1558-1562. doi: 10.1109/ACSSC.2010.5757799.

SAHAI A, PATEL G, and SABHARWAL A. Pushing the limits of full-duplex: Design and real-time implementation[R]. Houston: Rice University, 2011.

SABHARWAL A, SCHNITER P, Guo Dongning, et al. In-band full-duplex wireless: challenges and opportunities[J]. IEEE Journal on Selected Areas in Communications, 2014, 32(9): 1637-1652. doi: 10.1109/JSAC.2014.2330193.

SAMPATH R, MOHAMMAD A, KARTHIK S, et al. The case for antenna cancellation for scalable full-duplex wireless communications[C]. Proceedings of the 10th ACM Workshop on Hot Topics in Networks, Toronto, Canada, 2011: 1-6. doi: 10.1145/2070562.2070579.

EVAN E, MELISSA D, CHRIS D, et al. Empowering full- duplex wireless communication by exploiting directional diversity[C]. Proceedings of Asilomar Conference of the 45th Signals, Systems and Computers, Pacific Grove, CA, USA, 2011: 2002-2006. doi: 10.1109/ACSSC.2011.6190376.

WANG Jun, ZHAO Hongzhi, and TANG Youxi. A RF adaptive least mean square algorithm for self-interference cancellation in co-frequency co-time full duplex systems[C]. Proceedings of Conference of IEEE International Conference on Communications, Sydney, Australia, 2014: 5622-5627. doi: 10.1109/ICC.2014.6884217.

EVAN E, ACHALESHWAR S, and ASHUTOSH S. Passive self-interference suppression for full-duplex infrastructure nodes[J]. IEEE Transactions on Wireless Communications, 2014, 13(2): 680-694. doi: 10.1109/TWC.2013.010214. 130226.

DUARTE M, DICK C, and SABHARWAL A. Experiment- driven characterization of full-duplex wireless systems[J]. IEEE Transactions on Wireless Communications, 2012, 11(12): 4296-4307. doi: 10.1109/TWC.2012.102612.111278.

KORPI D, RIIHONEN T, SYRJALA V, et al. Full-duplex transceiver system calculations: analysis of ADC and linearity challenges[J]. IEEE Transactions on Wireless Communications, 2014, 13(7): 3821-3836. doi: 10.1109/ TWC.2014.2315213.

BHARADIA D, MCMILIN E, and KATTI S. Full duplex radios[C]. Proceedings of Conference of the ACM Special Interest Group on Data Communication, Hong Kong, China, 2013: 375-386. doi: 10.1145/2486001.2486033.

OMER M, RIMINI R, HEIDMANN P, et al. A compensation scheme to allow full duplex operation in the presence of highly nonlinear microwave components for 4G systems[C]. Proceedings of Conference of IEEE MTT-S International Microwave Symposium Digest, Baltimore, MD, USA, 2011: 1-4. doi: 10.1109/MWSYM.2011.5973395.

ANTTILA L, KORPI D, SYRJALA V, et al. Cancellation of power amplifier induced nonlinear self-interference in full- duplex transceivers: Signals, systems and computers[C]. Proceedings of Conference of 2013 Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, USA, 2013: 1193-1198. doi: 10.1109/ACSSC.2013.6810482.

KORPI D, ANTTILA L, and VALKAMA M. Feasibility of in-band full-duplex radio transceivers with imperfect RF components: analysis and enhanced cancellation algorithms [C]. Proceedings of 9th International Conference on Cognitive Radio Oriented Wireless Networks and Communications, Oulu, Finland, 2014: 532-538.

AHMED E, ELTAWIL A M, and SABHARWAL A. Self- interference cancellation with nonlinear distortion suppression for full-duplex systems: signals, systems and computers[C]. Proceedings of the IEEE Conference of 2013 Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, USA, 2013: 1199-1203. doi: 10.1109/ ACSSC.2013.6810483.

SCHENK T. RF Imperfections in High-rate Wireless Systems, Impact and Digital Compensation[M]. New York: Springer Netherlands, 2008: 185-243.

ELSAYED A and AHMED M E. All-digital self-interference cancellation technique for full-duplex systems[J]. IEEE Transactions on Wireless Communications, 2015, 14(7): 3519-3532. doi: 10.1109/TWC.2015.2407876.

史治国, 洪少华, 陈抗生. 基于Xilinx FPGA的OFDM通信系统基带设计[M]. 杭州: 浙江大学出版社, 2009: 37-38.

SHI Zhiguo, HONG Shaohua, and CHEN Kangsheng. Xilinx FPGA-Based Baseband OFDM Communication System Design[M]. Hangzhou: Zhejiang University Press, 2009: 37-38.

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