Robust timing synchronization for full duplex communications

Design and implementation

Min Keun Chung, Liang Liu, Ove Edfors, Dong Ku Kim, Chan-Byoung Chae

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents a robust timing synchronization method for full duplex orthogonal frequency division multiplexing (OFDM) systems based on Long Term Evolution (LTE). The proposed method contains two essential steps: 1) time alignment between the desired signal and self-interference 2) normalized synchronization peak (NSP) index switching. The time alignment is to make the difference in arrival times of the desired signal and the self-interference signal within cyclic prefix (CP) duration of an OFDM symbol, exploiting a time advance, thereby adopting low-complexity, frequency domain self-interference cancellation and decoding. In the second step, to improve the probability of successful time synchronization, a Zadoff-Chu sequence with a different root index is used for the primary synchronization signal at each node. To validate the proposed method with experimental evidence, we implement a full duplex physical layer (PHY) on an FPGA-based software-defined radio (SDR) platform. It is shown that our full duplex OFDM synchronizer is flexible and robust, in a real-world wireless channel, compared to existing synchronization method.

Original languageEnglish
Title of host publication2017 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2017 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages883-887
Number of pages5
ISBN (Electronic)9781509059904
DOIs
Publication statusPublished - 2018 Mar 7
Event5th IEEE Global Conference on Signal and Information Processing, GlobalSIP 2017 - Montreal, Canada
Duration: 2017 Nov 142017 Nov 16

Publication series

Name2017 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2017 - Proceedings
Volume2018-January

Other

Other5th IEEE Global Conference on Signal and Information Processing, GlobalSIP 2017
CountryCanada
CityMontreal
Period17/11/1417/11/16

Fingerprint

Synchronization
Communication
Orthogonal frequency division multiplexing
Long Term Evolution (LTE)
Signal interference
Decoding
Field programmable gate arrays (FPGA)

All Science Journal Classification (ASJC) codes

  • Information Systems
  • Signal Processing

Cite this

Chung, M. K., Liu, L., Edfors, O., Kim, D. K., & Chae, C-B. (2018). Robust timing synchronization for full duplex communications: Design and implementation. In 2017 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2017 - Proceedings (pp. 883-887). (2017 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2017 - Proceedings; Vol. 2018-January). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/GlobalSIP.2017.8309087
Chung, Min Keun ; Liu, Liang ; Edfors, Ove ; Kim, Dong Ku ; Chae, Chan-Byoung. / Robust timing synchronization for full duplex communications : Design and implementation. 2017 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2017 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2018. pp. 883-887 (2017 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2017 - Proceedings).
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Chung, MK, Liu, L, Edfors, O, Kim, DK & Chae, C-B 2018, Robust timing synchronization for full duplex communications: Design and implementation. in 2017 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2017 - Proceedings. 2017 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2017 - Proceedings, vol. 2018-January, Institute of Electrical and Electronics Engineers Inc., pp. 883-887, 5th IEEE Global Conference on Signal and Information Processing, GlobalSIP 2017, Montreal, Canada, 17/11/14. https://doi.org/10.1109/GlobalSIP.2017.8309087

Robust timing synchronization for full duplex communications : Design and implementation. / Chung, Min Keun; Liu, Liang; Edfors, Ove; Kim, Dong Ku; Chae, Chan-Byoung.

2017 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2017 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2018. p. 883-887 (2017 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2017 - Proceedings; Vol. 2018-January).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Chung MK, Liu L, Edfors O, Kim DK, Chae C-B. Robust timing synchronization for full duplex communications: Design and implementation. In 2017 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2017 - Proceedings. Institute of Electrical and Electronics Engineers Inc. 2018. p. 883-887. (2017 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2017 - Proceedings). https://doi.org/10.1109/GlobalSIP.2017.8309087