全双工通信射频域自干扰抑制量对数字域自干扰抑制能力的影响

黎斯; 鲁宏涛; 邵士海; 唐友喜

doi:10.11999/JEIT160967

全双工通信射频域自干扰抑制量对数字域自干扰抑制能力的影响

doi: 10.11999/JEIT160967

基金项目:

国家自然科学基金(61531009, 61501093, 61271164, 61471108, 61201266)，国家科技重大专项(2014ZX03003001-002)

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出版历程
- 收稿日期: 2016-09-26
- 刊出日期: 2017-06-19

Impact of the Amount of RF Self-interference Cancellation on Digital Self-interference Cancellation in Full Duplex Communications

Funds:

The National Natural Science Foundation of China (61531009, 61501093, 61271164, 61471108, 61201266), The National Major Project of China (2014ZX03003001-002)

摘要

摘要: 同时同频全双工通信的射频域自干扰抑制量增加，导致数字域自干扰信号的信噪比下降，使得数字域自干扰抑制量减少。针对这一现实问题，该文分析了数字域自干扰抑制能力与射频域自干扰抑制量之间的量化关系，在典型数字域估计算法下，给出了具体关系的闭合解。分析与仿真结果表明，全双工通信在执行射频域联合数字域自干扰抑制时，射频域自干扰抑制的增大量总是大于数字域自干扰抑制能力的减小量，当射频域自干扰抑制较小时，数字域自干扰抑制将更有效；过大的射频域自干扰抑制量将造成数字域自干扰抑制性能的损失。
- 同时同频全双工 /
- 数字域自干扰抑制 /
- 射频域自干扰抑制 /
- 信道估计
Abstract: The self-interference signal to noise ratio in digital domain decreases as the amount of RF self-interference cancellation increases in Co-time Co-frequency Full Duplex (CCFD) communications. The amount of digital self-interference cancellation decreases as the digital self-interference power decreases. The impact of the amount of RF self-interference cancellation on digital self-interference cancellation is analyzed. The digital self-interference cancellation is analyzed in this paper based on LS and MMSE channel estimation. It is shown that the decrease in the amount of digital self-interference cancellation is always less than the increase in RF self- interference cancellation when applying digital cancellation after RF cancellation in full duplex communications. Applying digital cancellation after RF cancellation is more useful when RF cancellation delivers poor suppression. The performance of digital self-interference cancellation will degrade when RF cancellation achieves large suppression.
- Co-time Co-frequency Full Duplex (CCFD) /
- Digital self-interference cancellation /
- RF self-interference cancellation /
- Channel estimation

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参考文献(19)

GUO Tianwen and WANG Baoyun. Joint transceiver beamforming design for end-to-end optimization in full-duplex MIMO relay system with self-interference[J]. IEEE Communications Letters, 2016, 20(9): 1733-1736. doi: 10.1109/LCOMM.2016.2592502.

MOHAMMADI M, CHALISE B K, SURAWEERA H A, et al. Throughput analysis and optimization of wireless-powered multiple antenna full-duplex relay systems[J]. IEEE Transactions on Communications, 2016, 64(4): 1769-1785. doi: 10.1109/TCOMM.2016.2527785.

MOKHTAR M, DHAHIR N A, and HAMILA R. OFDM full-duplex DF relaying under I/Q imbalance and loopback self-interference[J]. IEEE Transactions on Vehicular Technology, 2016, 65(8): 6737-6741. doi: 10.1109/TVT. 2015.2479257.

ZHANG Zhongshan, CHAI Xiaomeng, LONG Keping, et al. Full duplex techniques for 5G networks: Self-interference cancellation, protocol design, and relay selection[J]. IEEE Communications Magazine, 2015, 53(5): 128-137. doi: 10.1109/MCOM.2015.7105651.

KORPI D, RIIHONENY T, and VALKAMA M. Achievable rate regions and self-interference channel estimation in hybrid full-duplex/half-duplex radio links[C]. Proceedings of 2015 49th Annual Conference on Information Sciences and Systems, Baltimore, USA, 2015: 1-6.

TAGHIZADEH O and MATHAR R. Interference mitigation via power optimization schemes for full-duplex networking[C]. Proceedings of 2015 19th International ITG Workshop on Smart Antennas, Ilmenau, Germany, 2015: 1-7.

MASOUDI A and NGOC T L. Channel estimation and self-interference cancelation in full-duplex communication systems[J]. IEEE Transactions on Vehicular Technology, 2017, 66(1): 321-334. doi: 10.1109/TVT.2016.2540538.

AHMED E and ELTAWIL A M. 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.

LI S H and MURCH R D. An investigation into baseband techniques for single-channel full-duplex wireless communication systems[J]. IEEE Transactions on Wireless Communications, 2014, 13(9): 4794-4806. doi: 10.1109/ TWC.2014.2341569.

TAPIO V and SONKKI M. Analog and digital self-interference cancellation for full-duplex transceivers[C]. European Wireless 2016, Berlin, Germany, 2016: 1-5.

VERMEULEN T, LIEMPD B V, HERSHBERG B, et al. Real-time RF self-interference cancellation for in-band full duplex[C]. 2015 IEEE International Symposium on Dynamic Spectrum Access Networks, Stockholm, Sweden, 2015: 275-276.

FOROOZANFARD E, FRANEK O, TATOMIRESCU A, et al. Full-duplex MIMO system based on antenna cancellation technique[J]. Electronics Letters, 2014, 50(16): 1116-1117. doi: 10.1049/el.2014.1650.

MELISSA D, CHRIS D, and ASHUT S. 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.

唐友喜. 同时同频全双工原理及应用[M]. 北京: 科学出版社, 2016: 1-180.

TANG Youxi. Full Duplex Principles and Applications[M]. Beijing: Science Press, 2016: 1-180.

BARHUMI I, LEUS G, and MOONEN M. Optimal training design for MIMO OFDM systems in mobile wireless channels[J]. IEEE Transactions on Signal Processing, 2003, 51(6): 1615-1624. doi: 10.1109/TSP.2003.811243.

MINN H and AL-DHAHIR N. Optimal training signals for MIMO OFDM channel estimation[J]. IEEE Transactions on Wireless Communications, 2006, 5(5): 1158-1168. doi: 10.1109/TWC.2006.1633369.

MORELLI M and MENGALI U. A Comparison of pilot-aided channel estimation methods for OFDM systems[J]. IEEE Transactions on Signal Processing, 2001, 49(12): 3065-3073. doi: 10.1109/78.969514.

MELISSA D and ASHUTOSH S. Full-duplex wireless communications using off-the-shelf radios: feasibility and first results[C]. 2010 Asilomar Conference on Signals, Systems and Computers, California, USA, 2010: 1558-1562.

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