Design and Implementation of Multi-Antenna In-Band Full-Duplex Communication Device 


Vol. 43,  No. 6, pp. 1041-1050, Jun.  2018
10.7840/kics.2018.43.6.1041


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  Abstract

In a wireless communication environment, an in-band full-duplex communication system can be one of the better solutions for spectrum shortage. In this paper, we propose a system configuration suitable for the self-interference signal cancellation for full duplex communication in multi antenna environment. In particular, problems such as multi-antenna interference, IQ mismatch, and PA non-linearity included in the self-interference signal increase the complexity of self-interference(SI) cancellation system. In this paper, RF SIC(Self-Interference Cancellation) block is simplified through using polarized antennas, and the complexity of digital SIC block is reduced by using SIC through the auxiliary transmitter and intermediate frequency. By implementing IFD communication platform, we show that the power of residual SI is reduced to that of background noise by cancelling more than 90dB of SI signal. In addition, the quality of received signal observed by constellations is shown to be comparable.

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  Cite this article

[IEEE Style]

J. Son, D. Gwak, H. Ju, "Design and Implementation of Multi-Antenna In-Band Full-Duplex Communication Device," The Journal of Korean Institute of Communications and Information Sciences, vol. 43, no. 6, pp. 1041-1050, 2018. DOI: 10.7840/kics.2018.43.6.1041.

[ACM Style]

Jungbo Son, Donghyuk Gwak, and Hyungsik Ju. 2018. Design and Implementation of Multi-Antenna In-Band Full-Duplex Communication Device. The Journal of Korean Institute of Communications and Information Sciences, 43, 6, (2018), 1041-1050. DOI: 10.7840/kics.2018.43.6.1041.

[KICS Style]

Jungbo Son, Donghyuk Gwak, Hyungsik Ju, "Design and Implementation of Multi-Antenna In-Band Full-Duplex Communication Device," The Journal of Korean Institute of Communications and Information Sciences, vol. 43, no. 6, pp. 1041-1050, 6. 2018. (https://doi.org/10.7840/kics.2018.43.6.1041)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880