Digital Self-Interference Cancellation Based on Bounded Component Analysis for In-Band Full-Duplex

TANG Yanqun; MA Weifeng; CHU Jianjun; WEI Xizhang

doi:10.11999/JEIT220308

Volume 45 Issue 5

May 2023

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Article Navigation > Journal of Electronics & Information Technology > 2023 > 45(5): 1619-1626

TANG Yanqun, MA Weifeng, CHU Jianjun, WEI Xizhang. Digital Self-Interference Cancellation Based on Bounded Component Analysis for In-Band Full-Duplex[J]. Journal of Electronics & Information Technology, 2023, 45(5): 1619-1626. doi: 10.11999/JEIT220308

Citation:

TANG Yanqun, MA Weifeng, CHU Jianjun, WEI Xizhang. Digital Self-Interference Cancellation Based on Bounded Component Analysis for In-Band Full-Duplex[J]. Journal of Electronics & Information Technology, 2023, 45(5): 1619-1626. doi: 10.11999/JEIT220308

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Digital Self-Interference Cancellation Based on Bounded Component Analysis for In-Band Full-Duplex

doi: 10.11999/JEIT220308

School of Electronics and Communication Engineering, Sun Yat-sen University, Shenzhen 518107, China

Funds: Guangdong Natural Science Foundation (2019A1515011622), The National Natural Science Foundation of China (62071499)

Received Date: 2022-03-22
Rev Recd Date: 2022-11-14

Available Online: 2022-11-17

Publish Date: 2023-05-10

Abstract

Abstract

In-Band Full Duplex (IBFD) technique is expected to be the most potential scheme for modern wireless communication system, since it can prove the spectral efficiency. However, in the application process, it faces the great challenge of Self-Interference Cancellation (SIC). SIC can be realized separately or in combination from three aspects: propagation domain, analog domain and digital domain. This paper focuses on digital SIC in the IBFD. To solve the problem that the performance of the traditional digital SIC is limited by the non-ideality of the components of transceiver link, this paper adopts an IBFD system of Radio Frequency (RF) auxiliary link. By exploiting the boundedness of signal of interest and self-interfering signal, a digital SIC algorithm based on bounded component analysis is developed. Under the two channel scenarios of the Line Of Sight (LOS) and the Non-Line Of Sight (NLOS), the simulation and measured data are used to verify and analyze. The results show that compared with the least square method and independent component analysis method, the proposed bounded component analysis method improves the SIC effect and improves the bit error rate performance of the system.
- Wireless Communication,
- In-Band Full-Duplex (IBFD),
- Bounded Component Analysis (BCA),
- Self-Interference Cancellation (SIC)

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References(15)

References

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