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http://dx.doi.org/10.5515/KJKIEES.2019.30.3.229

In-Band Full-Duplex Wireless Communication Using USRP  

Park, Haeun (Department of Information Communication Engineering, Handong Global University)
Yoon, Jiyong (Department of Information Communication Engineering, Handong Global University)
Kim, Youngsik (Department of Information Communication Engineering, Handong Global University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.30, no.3, 2019 , pp. 229-235 More about this Journal
Abstract
The implementation of an in-band full-duplex wireless communication system is demonstrated in this study. In the analog/RF domain, the self-interference(SI) signal is reduced using a separate antenna for the transmitter and receiver paths, and most of the SI signal is canceled in the digital domain. A software defined radio(SDR) is used to implement the in-band full-duplex wireless communication system. The USRP X310 device uses transmitting and receiving antennas. By adjusting the gain of the transmitting and receiving ends of the SDR device, the magnitude of the SI signal entering the receiving antenna, and the size of the received signal from the outside, are both set to -64 dB. To verify the in-band full-duplex wireless communication performance, the source data is image and orthogonal frequency-division multiplexing is used for modulation. A WiFi standard frame with a carrier frequency of 2.67 GHz and bandwidth of 20 MHz is used. In the received signal, the SI signal is canceled by digital signal processing and the SI signal is attenuated by up to 34 dB. OFDM demodulation was impossible when the SI signal was not removed. However, the bit error rate is reduced to $2.63{\times}10^{-5}$ when the SI signal is attenuated by 34 dB, and no error is detected in the 100 Mbit data output as a result of passing through the Viterbi decoder.
Keywords
In-Band Full-Duplex; Self-Interference Signal Cancellation; OFDM; SDR; Wiener Filter;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 Cisco, "Cisco visual networking index: Forecast and trends, 2017-2022 white paper", 2019. Available: https://www.cisco.com/c/en/us/solutions/collateral/service-provider/visual-networking-index-vni/white-paper-c11-741490.html. Accessed on: Nov. 1, 2018.
2 김선애, 장갑석, 곽병재, 이문식, 방승찬, "표준․시험인증 기술 동향-동일대역 전이중(in-band full-duplex) 방식 송수신기 기술 및 표준화 동향," TTA 저널, 155, pp. 82-92, 2014년 9월.
3 이지호, 장갑석, 김영식, "동일대역 전이중 통신을 위한 RF/아날로그 영역에서의 자기간섭 신호 제거 시스템 구현," 한국전자파학회논문지, 27(3), pp. 277-283, 2016년 3월.   DOI
4 김재훈, 곽병재, 김영식, "동일대역 전이중 방식 FRS 대역 무전기 개발," 한국전자파학회논문지, 28(10), pp. 769-778, 2017년 10월.   DOI
5 W. Zhou, G. Villemaud, and T. Risset, "Full duplex prototype of OFDM on GNURadio and USRPs," in IEEE Radio and Wireless Symposium, Jan. 2014, pp. 217-219.
6 안창영, 유흥균, "RF cancellation과 digital cancellation을사용한SSD(Simultaneous Single Band Duplex) 시스템," 한국통신학회논문지, 39A(2), pp. 100-108, 2014년.
7 왕우완, 박현철, "동일대역 전이중 방식 통신 시스템에서 자기간섭 제거에 따른 성능 분석," 한국통신학회논문지, 41(3), pp. 331-337, 2016년 3월.   DOI
8 A. Shamsa, S. Ghorshi, and M. Joorabchi, "Noise reduction using multi-channel FIR warped wiener filter," in 2016 13th International Multi-Conference on Systems, Signals & Devices(SSD), Leipzig, 2016, pp. 531-536.