Robust timing synchronization for full duplex communications: Design and implementation

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding

Bibtex

@inproceedings{b9380cbac22f4015ac92983a44cb3140,
title = "Robust timing synchronization for full duplex communications: Design and implementation",
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.",
keywords = "Full duplex communications, software-defined radio implementation, timing synchronization",
author = "Chung, {Min Keun} and Liang Liu and Ove Edfors and Kim, {Dong Ku} and Chae, {Chan Byoung}",
year = "2018",
month = mar,
day = "7",
doi = "10.1109/GlobalSIP.2017.8309087",
language = "English",
volume = "2018-January",
pages = "883--887",
booktitle = "2017 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2017 - Proceedings",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
address = "United States",
note = "5th IEEE Global Conference on Signal and Information Processing, GlobalSIP 2017 ; Conference date: 14-11-2017 Through 16-11-2017",

}