Robust timing synchronization for full duplex communications : Design and implementation
(2018) 5th IEEE Global Conference on Signal and Information Processing, GlobalSIP 2017 2018-January. p.883-887- 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... (More)
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.
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- author
- Chung, Min Keun LU ; Liu, Liang LU ; Edfors, Ove LU ; Kim, Dong Ku and Chae, Chan Byoung
- organization
- publishing date
- 2018-03-07
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Full duplex communications, software-defined radio implementation, timing synchronization
- host publication
- 2017 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2017 - Proceedings
- volume
- 2018-January
- pages
- 5 pages
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- conference name
- 5th IEEE Global Conference on Signal and Information Processing, GlobalSIP 2017
- conference location
- Montreal, Canada
- conference dates
- 2017-11-14 - 2017-11-16
- external identifiers
-
- scopus:85048040640
- ISBN
- 9781509059904
- DOI
- 10.1109/GlobalSIP.2017.8309087
- language
- English
- LU publication?
- yes
- id
- b9380cba-c22f-4015-ac92-983a44cb3140
- date added to LUP
- 2018-06-20 13:59:12
- date last changed
- 2023-09-08 03:19:13
@inproceedings{b9380cba-c22f-4015-ac92-983a44cb3140, abstract = {{<p>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.</p>}}, author = {{Chung, Min Keun and Liu, Liang and Edfors, Ove and Kim, Dong Ku and Chae, Chan Byoung}}, booktitle = {{2017 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2017 - Proceedings}}, isbn = {{9781509059904}}, keywords = {{Full duplex communications; software-defined radio implementation; timing synchronization}}, language = {{eng}}, month = {{03}}, pages = {{883--887}}, publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}}, title = {{Robust timing synchronization for full duplex communications : Design and implementation}}, url = {{http://dx.doi.org/10.1109/GlobalSIP.2017.8309087}}, doi = {{10.1109/GlobalSIP.2017.8309087}}, volume = {{2018-January}}, year = {{2018}}, }